Mario Merola

Università degli Studi di Napoli Federico II

H-index: 206

Europe-Italy

About Mario Merola

Mario Merola, With an exceptional h-index of 206 and a recent h-index of 109 (since 2020), a distinguished researcher at Università degli Studi di Napoli Federico II, specializes in the field of Experimental Particle Physics.

His recent articles reflect a diverse array of research interests and contributions to the field:

Pressure correction study for the CMS iRPC detector

Improved resistive plate chambers for HL-LHC upgrade of CMS

Search for a dark leptophilic scalar produced in association with pair in annihilation at center-of-mass energies near 10.58 GeV

Angular analysis of in the low- region with new electron identification at Belle

Measurement of branching fractions and direct asymmetries for and decays at Belle II

Search for Baryon-Number-Violating Processes in Decays to the Final State

Search for the decay at Belle experiment

Search for the semileptonic decays at Belle

Mario Merola Information

University	Università degli Studi di Napoli Federico II
Position	and INFN Napoli
Citations(all)	171671
Citations(since 2020)	62585
Cited By	108427
hIndex(all)	206
hIndex(since 2020)	109
i10Index(all)	836
i10Index(since 2020)	710
Email	Access Email
University Profile Page	Università degli Studi di Napoli Federico II

Mario Merola Skills & Research Interests

Experimental Particle Physics

Top articles of Mario Merola

Pressure correction study for the CMS iRPC detector

Authors

Tahany Abdelhameid,M Gouzevitch,Amrutha Samalan,Michael Tytgat,M El Sawy,GA Alves,F Marujo,EA Coelho,EM Da Costa,H Nogima,A Santoro,S Fonseca De Souza,D De Jesus Damiao,M Thiel,K Mota Amarilo,M Barroso Ferreira Filho,A Aleksandrov,R Hadjiiska,P Iaydjiev,M Rodozov,M Shopova,G Soultanov,A Dimitrov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,SJ Qian,H Kou,Z-A Liu,J Zhao,J Song,Q Hou,W Diao,P Cao,C Avila,D Barbosa,A Cabrera,A Florez,J Fraga,J Reyes,Y Assran,MA Mahmoud,Y Mohammed,I Crotty,I Laktineh,G Grenier,L Mirabito,K Shchablo,I Bagaturia,I Lomidze,Z Tsamalaidze,V Amoozegar,B Boghrati,M Ebraimi,M Mohammadi Najafabadi,E Zareian,M Abbrescia,G Iaselli,G Pugliese,F Loddo,N De Filippis,R Aly,D Ramos,W Elmetenawee,S Leszki,I Margjeka,D Paesani,L Benussi,S Bianco,D Piccolo,S Meola,S Buontempo,F Carnevali,L Lista,P Paolucci,F Fienga,A Braghieri,P Salvini,P Montagna,C Riccardi,P Vitulo,E Asilar,J Choi,TJ Kim,SY Choi,B Hong,KS Lee,HY Oh,J Goh,I Yu,C Uribe Estrada,I Pedraza,H Castilla-Valdez,A Sanchez-Hernandez,RL Fernandez,M Ramirez-Garcia,E Vazquez,MA Shah,N Zaganidis,A Radi,H Hoorani,S Muhammad,A Ahmad,I Asghar,WA Khan,J Eysermans,F Torres Da Silva De Araujo,CMS Muon Group

Journal

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Published Date

2024/2/1

Abstract The improved Resistive Plate Chambers (iRPC) are designed using thin low resistivity High-Pressure Laminate (HPL) gaps. They are proposed to equip the very forward region of the Compact Muon Solenoid (CMS) detector, as they can stand rates∼ 2 kHz/cm 2. To withstand 3 times higher rates than the installed CMS RPC chambers, the HPL electrode thickness was reduced from 2 mm to 1.4 mm. The gas gain of the detector is dependent on the gas pressure and temperature which requires correcting for the applied voltage to keep detector operational characteristics such as efficiency, cluster size and noise rate constant. Herein, we study the pressure correction at constant temperature for CMS iRPC and compare its correction coefficient with the one for the 2 mm RPC gap technology. Pressure correction parameters for both technologies are found compatible.

Improved resistive plate chambers for HL-LHC upgrade of CMS

Authors

A Samalan,M Thiel,E Asilar,M Tytgat,M El Sawy,GA Alves,F Marujo,EA Coelho,EM Da Costa,H Nogima,A Santoro,S Fonseca De Souza,D De Jesus Damiao,K Mota Amarilo,M Barroso Ferreira Filho,A Aleksandrov,R Hadjiiska,P Iaydjiev,M Rodozov,M Shopova,G Soultanov,A Dimitrov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,SJ Qian,W Gong,N Wang,H Kou,Z-A Liu,J Zhao,J Song,Q Hou,W Diao,P Cao,C Avila,D Barbosa,A Cabrera,A Florez,J Fraga,J Reyes,Y Assran,MA Mahmoud,Y Mohammed,I Crotty,I Laktineh,G Grenier,M Gouzevitch,L Mirabito,K Shchablo,C Combaret,W Tromeur,G Galbit,A Luciol,X Chen,I Bagaturia,I Lomidze,Z Tsamalaidze,V Amoozegar,B Boghrati,M Ebraimi,M Mohammadi Najafabadi,E Zareian,M Abbrescia,G Iaselli,G Pugliese,F Loddo,N De Filippis,R Aly,D Ramos,W Elmetenawee,S Leszki,I Margjeka,D Paesani,L Benussi,S Bianco,D Piccolo,S Meola,S Buontempo,F Carnevali,L Lista,P Paolucci,F Fienga,A Braghieri,P Salvini,P Montagna,C Riccardi,P Vitulo,J Choi,TJ Kim,SY Choi,B Hong,KS Lee,HY Oh,J Goh,I Yu,C Uribe Estrada,I Pedraza,H Castilla-Valdez,A Sanchez-Hernandez,RL Fernandez,M Ramirez-Garcia,E Vazquez,MA Shah,N Zaganidis,A Radi,H Hoorani,S Muhammad,A Ahmad,I Asghar,WA Khan,J Eysermans,F Torres Da Silva De Araujo,CMS Muon Group

Journal

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Published Date

2024/3/1

In view of the High Luminosity LHC, the CMS Muon system will be upgraded to sustain its efficient muon triggering and reconstruction performance. Resistive Plate Chambers (RPC) are dedicated detectors for muon triggering due to their excellent timing resolution. The RPC system will be extended up to 2.4 in pseudorapidity. Before the LHC Long Shutdown 3, new RE3/1 and RE4/1 stations of the forward Muon system will be equipped with improved Resistive Plate Chambers (iRPC) having, compared to the present RPC system, a different design and geometry and 2D strip readout. This advanced iRPC geometry configuration allows the rate capability to improve and hence survive the harsh background conditions during the HL-LHC phase. Several iRPC demonstrator chambers were installed in CMS during the recently completed 2nd Long Shutdown to study the detector behaviour under real LHC conditions …

Search for a dark leptophilic scalar produced in association with pair in annihilation at center-of-mass energies near 10.58 GeV

Authors

D Biswas,Sw Banerjee,I Adachi,H Aihara,DM Asner,T Aushev,R Ayad,V Babu,P Behera,J Bennett,M Bessner,V Bhardwaj,B Bhuyan,T Bilka,D Bodrov,J Borah,A Bozek,M Bračko,P Branchini,TE Browder,A Budano,M Campajola,D Červenkov,M-C Chang,P Chang,BG Cheon,K Chilikin,HE Cho,K Cho,S-K Choi,Y Choi,S Choudhury,D Cinabro,S Das,G De Nardo,G De Pietro,R Dhamija,F Di Capua,J Dingfelder,Z Doležal,TV Dong,S Dubey,P Ecker,D Epifanov,T Ferber,BG Fulsom,V Gaur,A Garmash,A Giri,P Goldenzweig,E Graziani,Y Guan,K Gudkova,C Hadjivasiliou,K Hayasaka,H Hayashii,S Hazra,MT Hedges,D Herrmann,M Hernández Villanueva,W-S Hou,C-L Hsu,K Inami,G Inguglia,N Ipsita,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,QP Ji,S Jia,Y Jin,KK Joo,AB Kaliyar,C Kiesling,CH Kim,DY Kim,K-H Kim,YJ Kim,Y-K Kim,P Kodyš,T Konno,A Korobov,S Korpar,P Križan,P Krokovny,M Kumar,K Kumara,Y-J Kwon,Y-T Lai,M Laurenza,SC Lee,D Levit,J Li,LK Li,Y Li,L Li Gioi,J Libby,K Lieret,Y-R Lin,D Liventsev,T Luo,Y Ma,M Masuda,SK Maurya,F Meier,M Merola,F Metzner,K Miyabayashi,R Mizuk,I Nakamura,M Nakao,Z Natkaniec,A Natochii,L Nayak,M Niiyama,NK Nisar,S Nishida,S Ogawa,H Ono,P Pakhlov,G Pakhlova,S Pardi,H Park,J Park,S-H Park,A Passeri,S Patra,S Paul,R Pestotnik,LE Piilonen,T Podobnik,E Prencipe,MT Prim,N Rout,G Russo,S Sandilya,L Santelj,V Savinov,G Schnell,C Schwanda,Y Seino,K Senyo,ME Sevior,W Shan,C Sharma,J-G Shiu,B Shwartz,JB Singh,A Sokolov

Journal

Physical Review D

Published Date

2024/2/5

A dark leptophilic scalar (ϕ L) is a hypothetical particle that couples only to leptons rather than quarks. We report on a search for ϕ L in the e+ e−→ τ+ τ− ϕ L, ϕ L→ ℓ+ ℓ−(ℓ= e, μ) process using 626 fb− 1 of data collected by the Belle experiment near the ϒ (4 S) resonance. We validate the backgrounds with multiple control regions in data, using a novel multiclass multivariate event classifier. In absence of a signal, we quote upper limits at the 90% confidence level on the coupling between ϕ L and leptons. Our bounds, obtained in a blinded approach, are 19% more constraining than the previous limits, averaged over the mass range 0.04≤ m ϕ L≤ 6.5 GeV. We exclude the parameter space below 4 GeV favored by measurement of the anomalous magnetic moment of the muon.

Angular analysis of in the low- region with new electron identification at Belle

Authors

D Ferlewicz,P Urquijo,I Adachi,K Adamczyk,H Aihara,DM Asner,H Atmacan,R Ayad,V Babu,Sw Banerjee,P Behera,K Belous,J Bennett,M Bessner,V Bhardwaj,B Bhuyan,T Bilka,D Biswas,D Bodrov,M Bračko,P Branchini,TE Browder,A Budano,M Campajola,L Cao,D Červenkov,M-C Chang,BG Cheon,K Chilikin,HE Cho,K Cho,S-K Choi,Y Choi,S Choudhury,S Das,N Dash,G de Marino,G De Pietro,R Dhamija,F Di Capua,J Dingfelder,Z Doležal,TV Dong,S Dubey,P Ecker,D Epifanov,T Ferber,BG Fulsom,V Gaur,A Garmash,A Giri,P Goldenzweig,E Graziani,T Gu,Y Guan,K Gudkova,C Hadjivasiliou,T Hara,K Hayasaka,H Hayashii,S Hazra,MT Hedges,D Herrmann,W-S Hou,C-L Hsu,T Iijima,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,S Jia,Y Jin,AB Kaliyar,C Kiesling,CH Kim,DY Kim,K-H Kim,Y-K Kim,K Kinoshita,P Kodyš,T Konno,A Korobov,S Korpar,E Kou,E Kovalenko,P Križan,P Krokovny,T Kuhr,R Kumar,K Kumara,A Kuzmin,Y-J Kwon,Y-T Lai,T Lam,SC Lee,D Levit,P Lewis,LK Li,YB Li,L Li Gioi,J Libby,D Liventsev,Y Ma,D Matvienko,F Meier,M Merola,F Metzner,K Miyabayashi,R Mizuk,GB Mohanty,I Nakamura,M Nakao,A Natochii,L Nayak,S Nishida,S Ogawa,H Ono,S Pardi,J Park,A Passeri,S Patra,S Paul,TK Pedlar,R Pestotnik,LE Piilonen,T Podobnik,E Prencipe,MT Prim,N Rout,G Russo,S Sandilya,V Savinov,G Schnell,C Schwanda,Y Seino,K Senyo,ME Sevior,W Shan,C Sharma,J-G Shiu,B Shwartz,E Solovieva,M Starič,M Sumihama,M Takizawa,U Tamponi,K Tanida,F Tenchini,M Uchida,Y Unno

Journal

arXiv preprint arXiv:2404.00201

Published Date

2024/3/30

We perform an angular analysis of the decay for the dielectron mass squared, , range of to using the full Belle data set in the and channels, incorporating new methods of electron identification to improve the statistical power of the data set. This analysis is sensitive to contributions from right-handed currents from physics beyond the Standard Model by constraining the Wilson coefficients . We perform a fit to the differential decay rate and measure the imaginary component of the transversality amplitude to be , and the transverse asymmetry to be . The resulting constraints on the value of are consistent with the Standard Model within a confidence interval.

Measurement of branching fractions and direct asymmetries for and decays at Belle II

Authors

I Adachi,L Aggarwal,H Ahmed,H Aihara,N Akopov,A Aloisio,N Anh Ky,DM Asner,H Atmacan,T Aushev,V Aushev,M Aversano,V Babu,H Bae,S Bahinipati,P Bambade,Sw Banerjee,S Bansal,M Barrett,J Baudot,M Bauer,A Baur,A Beaubien,F Becherer,J Becker,PK Behera,JV Bennett,FU Bernlochner,V Bertacchi,M Bertemes,E Bertholet,M Bessner,S Bettarini,B Bhuyan,F Bianchi,T Bilka,D Biswas,A Bobrov,D Bodrov,A Bolz,A Bondar,J Borah,A Bozek,M Bračko,P Branchini,RA Briere,TE Browder,A Budano,S Bussino,M Campajola,L Cao,G Casarosa,C Cecchi,J Cerasoli,M-C Chang,P Chang,R Cheaib,P Cheema,V Chekelian,C Chen,BG Cheon,K Chilikin,K Chirapatpimol,H-E Cho,K Cho,S-J Cho,S-K Choi,S Choudhury,J Cochran,L Corona,LM Cremaldi,S Das,F Dattola,E De La Cruz-Burelo,SA De La Motte,G De Nardo,M De Nuccio,G De Pietro,R De Sangro,M Destefanis,S Dey,A De Yta-Hernandez,R Dhamija,A Di Canto,F Di Capua,J Dingfelder,Z Doležal,I Domínguez Jiménez,TV Dong,M Dorigo,K Dort,D Dossett,S Dreyer,S Dubey,G Dujany,P Ecker,M Eliachevitch,D Epifanov,P Feichtinger,T Ferber,D Ferlewicz,T Fillinger,C Finck,G Finocchiaro,A Fodor,F Forti,A Frey,BG Fulsom,A Gabrielli,E Ganiev,M Garcia-Hernandez,R Garg,A Garmash,G Gaudino,V Gaur,A Gaz,A Gellrich,G Ghevondyan,D Ghosh,H Ghumaryan,G Giakoustidis,R Giordano,A Giri,A Glazov,B Gobbo,R Godang,O Gogota,P Goldenzweig,P Grace,W Gradl,T Grammatico,S Granderath,E Graziani,D Greenwald,Z Gruberová,T Gu,Y Guan,K Gudkova,S Halder,Y Han,T Hara,K Hayasaka,H Hayashii,S Hazra,C Hearty,MT Hedges,A Heidelbach,I Heredia De La Cruz,M Hernández Villanueva,A Hershenhorn

Journal

Physical Review D

Published Date

2024/1/4

We report measurements of the branching fractions and direct C P asymmetries of the decays B 0→ K+ π−, B+→ K+ π 0, B+→ K 0 π+, and B 0→ K 0 π 0, and use these for testing the standard model through an isospin-based sum rule. In addition, we measure the branching fraction and direct C P asymmetry of the decay B+→ π+ π 0 and the branching fraction of the decay B 0→ π+ π−. The data are collected with the b elle II detector from e+ e− collisions at the ϒ (4 S) resonance produced by the SuperKEKB asymmetric-energy collider and contain 387× 10 6 bottom-antibottom meson pairs. Signal yields are determined in two-dimensional fits to background-discriminating variables, and range from 500 to 3900 decays, depending on the channel. We obtain− 0.03±0.13±0.04 for the sum rule in agreement with the standard model expectation of zero and with a precision comparable to the best existing determinations.

Search for Baryon-Number-Violating Processes in Decays to the Final State

Authors

T Gu,V Savinov,I Adachi,H Aihara,DM Asner,H Atmacan,T Aushev,R Ayad,Sw Banerjee,K Belous,J Bennett,M Bessner,V Bhardwaj,B Bhuyan,D Biswas,A Bobrov,D Bodrov,J Borah,A Bozek,M Bračko,P Branchini,TE Browder,A Budano,M Campajola,D Červenkov,M-C Chang,P Chang,BG Cheon,K Chilikin,K Cho,S-K Choi,Y Choi,S Choudhury,S Das,G De Nardo,G De Pietro,R Dhamija,F Di Capua,J Dingfelder,Z Doležal,TV Dong,S Dubey,P Ecker,T Ferber,D Ferlewicz,BG Fulsom,V Gaur,A Giri,P Goldenzweig,E Graziani,Y Guan,K Gudkova,C Hadjivasiliou,K Hayasaka,H Hayashii,MT Hedges,D Herrmann,W-S Hou,C-L Hsu,N Ipsita,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,S Jia,Y Jin,KK Joo,T Kawasaki,C Kiesling,CH Kim,DY Kim,K-H Kim,YJ Kim,P Kodyš,A Korobov,S Korpar,E Kovalenko,P Križan,P Krokovny,T Kuhr,K Kumara,T Kumita,Y-J Kwon,Y-T Lai,SC Lee,D Levit,LK Li,YB Li,L Li Gioi,D Liventsev,M Masuda,T Matsuda,SK Maurya,F Meier,M Merola,F Metzner,K Miyabayashi,R Mizuk,GB Mohanty,R Mussa,I Nakamura,M Nakao,Z Natkaniec,A Natochii,L Nayak,M Nayak,M Niiyama,S Nishida,S Ogawa,G Pakhlova,S Pardi,H Park,J Park,S-H Park,A Passeri,S Patra,S Paul,TK Pedlar,R Pestotnik,LE Piilonen,T Podobnik,E Prencipe,MT Prim,M Röhrken,G Russo,S Sandilya,L Santelj,G Schnell,C Schwanda,Y Seino,K Senyo,ME Sevior,W Shan,C Sharma,J-G Shiu,E Solovieva,M Starič,M Takizawa,U Tamponi,K Tanida,F Tenchini,R Tiwary,K Trabelsi,M Uchida,Y Unno,S Uno,Y Usov,SE Vahsen,KE Varvell,A Vinokurova

Journal

arXiv preprint arXiv:2401.04807

Published Date

2024/1/9

We report the results of the first search for decays to the final state using 711~ of data collected at the resonance with the Belle detector at the KEKB asymmetric-energy collider. The results are interpreted in terms of both direct baryon-number-violating decay and oscillations which follow the Standard Model decay . We observe no evidence for baryon number violation and set the 95\% confidence-level upper limits on the ratio of baryon-number-violating and Standard Model branching fractions to be and on the oscillation angular frequency to be (equivalent to ~ps).

Search for the decay at Belle experiment

Authors

D Kumar,B Bhuyan,H Aihara,DM Asner,T Aushev,R Ayad,V Babu,Sw Banerjee,M Bauer,P Behera,K Belous,J Bennett,M Bessner,T Bilka,D Biswas,A Bobrov,D Bodrov,J Borah,M Bračko,P Branchini,TE Browder,A Budano,M Campajola,D Červenkov,M-C Chang,C Chen,BG Cheon,K Chilikin,K Cho,S-K Choi,Y Choi,S Choudhury,S Das,N Dash,G De Nardo,G De Pietro,R Dhamija,Z Doležal,TV Dong,P Ecker,D Epifanov,D Ferlewicz,BG Fulsom,R Garg,V Gaur,A Garmash,A Giri,P Goldenzweig,E Graziani,K Gudkova,C Hadjivasiliou,K Hayasaka,H Hayashii,S Hazra,D Herrmann,W-S Hou,C-L Hsu,N Ipsita,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,S Jia,Y Jin,D Kalita,AB Kaliyar,C Kiesling,CH Kim,DY Kim,K-H Kim,Y-K Kim,K Kinoshita,P Kodyš,A Korobov,S Korpar,E Kovalenko,P Križan,P Krokovny,T Kuhr,R Kumar,K Kumara,T Kumita,A Kuzmin,Y-J Kwon,T Lam,SC Lee,D Levit,LK Li,Y Li,YB Li,L Li Gioi,J Libby,D Liventsev,Y Ma,M Masuda,T Matsuda,D Matvienko,SK Maurya,F Meier,M Merola,F Metzner,K Miyabayashi,R Mizuk,GB Mohanty,R Mussa,M Nakao,Z Natkaniec,A Natochii,L Nayak,M Nayak,S Nishida,S Ogawa,H Ono,P Pakhlov,G Pakhlova,S Pardi,J Park,S-H Park,A Passeri,S Paul,TK Pedlar,R Pestotnik,LE Piilonen,T Podobnik,MT Prim,N Rout,G Russo,S Sandilya,L Santelj,V Savinov,G Schnell,C Schwanda,Y Seino,ME Sevior,W Shan,C Sharma,CP Shen,J-G Shiu,JB Singh,E Solovieva,M Starič,ZS Stottler,M Sumihama,M Takizawa,K Tanida,F Tenchini,R Tiwary,T Uglov,Y Unno,S Uno

Journal

Physical Review D

Published Date

2024/2/16

We have analyzed 121.4 fb− 1 of data collected at the ϒ (5 S) resonance by the Belle experiment using the KEKB asymmetric-energy e+ e− collider to search for the decay B s 0→ J/ψ π 0. We observe no signal and report an upper limit on the branching fraction B (B s 0→ J/ψ π 0) of 1.21× 10− 5 at 90% confidence level. This result is the most stringent, improving the previous bound by 2 orders of magnitude.

Search for the semileptonic decays at Belle

Authors

JX Cui,YB Li,CP Shen,I Adachi,H Aihara,S Al Said,DM Asner,T Aushev,R Ayad,V Babu,S Bahinipati,Sw Banerjee,M Bauer,P Behera,K Belous,J Bennett,M Bessner,B Bhuyan,T Bilka,D Biswas,A Bobrov,D Bodrov,J Borah,M Bračko,P Branchini,TE Browder,A Budano,M Campajola,D Červenkov,M-C Chang,BG Cheon,K Chilikin,K Cho,S-K Choi,Y Choi,S Choudhury,S Das,N Dash,G De Nardo,G De Pietro,R Dhamija,F Di Capua,J Dingfelder,Z Doležal,TV Dong,S Dubey,P Ecker,D Epifanov,T Ferber,D Ferlewicz,BG Fulsom,R Garg,V Gaur,A Garmash,A Giri,P Goldenzweig,E Graziani,K Gudkova,C Hadjivasiliou,S Halder,K Hayasaka,H Hayashii,S Hazra,D Herrmann,W-S Hou,C-L Hsu,K Inami,N Ipsita,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,S Jia,Y Jin,D Kalita,C Kiesling,DY Kim,K-H Kim,Y-K Kim,K Kinoshita,P Kodyš,A Korobov,S Korpar,E Kovalenko,P Križan,P Krokovny,T Kuhr,D Kumar,R Kumar,Y-J Kwon,T Lam,SC Lee,LK Li,Y Li,L Li Gioi,J Libby,D Liventsev,Y Ma,M Masuda,D Matvienko,SK Maurya,F Meier,M Merola,K Miyabayashi,R Mizuk,R Mussa,M Nakao,Z Natkaniec,A Natochii,L Nayak,S Nishida,S Ogawa,H Ono,P Oskin,P Pakhlov,G Pakhlova,S Pardi,H Park,J Park,S-H Park,S Patra,S Paul,TK Pedlar,R Pestotnik,LE Piilonen,T Podobnik,MT Prim,N Rout,G Russo,S Sandilya,L Santelj,V Savinov,G Schnell,C Schwanda,Y Seino,K Senyo,ME Sevior,W Shan,C Sharma,J-G Shiu,A Sokolov,E Solovieva,M Starič,ZS Stottler,M Sumihama,M Takizawa,K Tanida,F Tenchini,R Tiwary,T Uglov

Journal

arXiv preprint arXiv:2312.02580

Published Date

2023/12/5

Using the full data sample of 980 collected with the Belle detector at the KEKB asymmetric energy electron-positron collider, we report the results of the first search for the rare semileptonic decays ( or . No significant signals are observed in the invariant-mass distributions. Taking the decay as the normalization mode, we report 90\% credibility upper limits on the branching fraction ratios and ${\cal{B}} (\Xi_c^0 \to \Xi^0 \mu^+ \mu^-) / {\cal{B}}(\Xi_c^0\to \Xi^-\pi^+) < 4.3 \times 10^{-3}$ based on the phase-space assumption for signal decays. The 90\% credibility upper limits on the absolute branching fractions of and are found to be and , respectively.

Search for a heavy neutral lepton that mixes predominantly with the tau neutrino

Authors

M Nayak,S Dey,A Soffer,I Adachi,H Aihara,S Al Said,DM Asner,H Atmacan,R Ayad,V Babu,Sw Banerjee,M Bauer,P Behera,K Belous,M Bessner,V Bhardwaj,B Bhuyan,T Bilka,D Biswas,A Bobrov,D Bodrov,M Bračko,P Branchini,TE Browder,A Budano,M Campajola,D Červenkov,M-C Chang,BG Cheon,HE Cho,K Cho,Y Choi,S Choudhury,S Das,G De Nardo,G De Pietro,R Dhamija,F Di Capua,J Dingfelder,Z Doležal,TV Dong,S Dubey,P Ecker,D Epifanov,T Ferber,O Fogel,BG Fulsom,V Gaur,A Giri,P Goldenzweig,E Graziani,K Gudkova,C Hadjivasiliou,S Halder,T Hara,K Hayasaka,H Hayashii,S Hazra,MT Hedges,D Herrmann,W-S Hou,C-L Hsu,K Inami,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,S Jia,Y Jin,T Kawasaki,C Kiesling,CH Kim,DY Kim,K Kinoshita,P Kodyš,A Korobov,S Korpar,P Križan,P Krokovny,T Kuhr,D Kumar,R Kumar,A Kuzmin,Y-J Kwon,Y-T Lai,T Lam,JS Lange,M Laurenza,SC Lee,LK Li,YB Li,L Li Gioi,J Libby,K Lieret,Y-R Lin,D Liventsev,T Luo,Y Ma,M Masuda,SK Maurya,F Meier,M Merola,K Miyabayashi,R Mizuk,GB Mohanty,R Mussa,I Nakamura,M Nakao,Z Natkaniec,A Natochii,L Nayak,S Nishida,S Ogawa,H Ono,P Oskin,P Pakhlov,G Pakhlova,S Pardi,H Park,J Park,S-H Park,A Passeri,S Patra,S Paul,R Pestotnik,LE Piilonen,T Podobnik,E Prencipe,MT Prim,M Röhrken,A Rostomyan,N Rout,G Russo,S Sandilya,L Santelj,V Savinov,G Schnell,C Schwanda,Y Seino,K Senyo,ME Sevior,W Shan,C Sharma,CP Shen,J-G Shiu,JB Singh,A Sokolov,E Solovieva,M Starič,M Sumihama

Journal

arXiv preprint arXiv:2402.02580

Published Date

2024/2/4

We report a search for a heavy neutral lepton (HNL) that mixes predominantly with . The search utilizes data collected with the Belle detector at the KEKB asymmetric energy collider. The data sample was collected at and just below the center-of-mass energies of the and resonances and has an integrated luminosity of , corresponding to events. We search for production of the HNL (denoted ) in the decay followed by its decay via . The search focuses on the parameter-space region in which the HNL is long lived, so that the originate from a common vertex that is significantly displaced from the collision point of the KEKB beams. Consistent with the expected background yield, one event is observed in the data sample after application of all the event-selection criteria. We report limits on the mixing parameter of the HNL with the neutrino as a function of the HNL mass.

Search for a pentaquark state decaying into in inclusive decays at Belle

Authors

X Dong,HY Zhang,XL Wang,I Adachi,JK Ahn,H Aihara,S Al Said,DM Asner,H Atmacan,R Ayad,S Bahinipati,Sw Banerjee,M Bessner,V Bhardwaj,D Biswas,D Bodrov,A Bozek,M Bračko,P Branchini,TE Browder,A Budano,M Campajola,D Červenkov,M-C Chang,P Chang,BG Cheon,HE Cho,K Cho,S-K Choi,Y Choi,S Choudhury,S Das,G De Nardo,G De Pietro,R Dhamija,F Di Capua,J Dingfelder,Z Doležal,TV Dong,P Ecker,D Epifanov,T Ferber,D Ferlewicz,BG Fulsom,R Garg,V Gaur,A Giri,P Goldenzweig,E Graziani,T Gu,Y Guan,K Gudkova,C Hadjivasiliou,H Hayashii,S Hazra,MT Hedges,W-S Hou,C-L Hsu,K Inami,N Ipsita,A Ishikawa,R Itoh,WW Jacobs,S Jia,Y Jin,D Kalita,T Kawasaki,DY Kim,K-H Kim,YJ Kim,Y-K Kim,K Kinoshita,P Kodyš,A Korobov,S Korpar,E Kovalenko,P Križan,P Krokovny,T Kuhr,R Kumar,T Kumita,A Kuzmin,Y-J Kwon,Y-T Lai,T Lam,JS Lange,D Levit,LK Li,Y Li,YB Li,L Li Gioi,J Libby,D Liventsev,Y Ma,M Masuda,T Matsuda,SK Maurya,F Meier,M Merola,F Metzner,K Miyabayashi,R Mussa,I Nakamura,T Nakano,M Nakao,Z Natkaniec,A Natochii,L Nayak,M Nayak,S Nishida,S Ogawa,H Ono,G Pakhlova,S Pardi,H Park,J Park,S-H Park,A Passeri,S Patra,S Paul,R Pestotnik,T Podobnik,E Prencipe,MT Prim,G Russo,S Sandilya,V Savinov,G Schnell,C Schwanda,Y Seino,K Senyo,ME Sevior,W Shan,C Sharma,J-G Shiu,JB Singh,E Solovieva,M Starič,M Takizawa,K Tanida,F Tenchini,R Tiwary,M Uchida,Y Unno,S Uno,P Urquijo,Y Usov,A Vinokurova,S Watanuki,E Won

Journal

arXiv preprint arXiv:2403.04340

Published Date

2024/3/7

Using the data samples of 102 million and 158 million events collected by the Belle detector, we search for a pentaquark state in the final state from inclusive decays. Here, the charge-conjugate is included. We observe clear production in decays and measure the branching fractions to be $\mathcal{B}[\Upsilon(1S) \to pJ/\psi + anything] = [4.27 \pm 0.16(stat.) \pm 0.20(syst.)] \times 10^{-5}$ and $\mathcal{B}[\Upsilon(2S) \to pJ/\psi + anything] = [3.59 \pm 0.14(stat.) \pm 0.16(syst.)] \times 10^{-5}$. We also measure the cross section of inclusive production in annihilation to be $\sigma(e^+e^- \to pJ/\psi + anything) = [57.5 \pm 2.1 (stat.) \pm 2.5(syst.)]$~fb at using an 89.5~fb continuum data sample. There is no significant , or signal found in the final states in inclusive decays. We determine the upper limits of $\mathcal{B}[\Upsilon(1,2S)\to P_c^{+} + anything] \cdot \mathcal{B}(P_c^{+}\to pJ/\psi)$ to be at the level.

Measurements of the branching fraction, polarization, and asymmetry for the decay

Authors

Y Guan,AJ Schwartz,K Kinoshita,I Adachi,H Aihara,S Al Said,DM Asner,H Atmacan,R Ayad,S Bahinipati,Sw Banerjee,K Belous,J Bennett,M Bessner,V Bhardwaj,B Bhuyan,D Biswas,A Bobrov,D Bodrov,J Borah,A Bozek,M Bračko,P Branchini,A Budano,M Campajola,L Cao,D Červenkov,M-C Chang,P Chang,BG Cheon,K Chilikin,HE Cho,K Cho,S-K Choi,Y Choi,S Choudhury,S Das,G De Nardo,G De Pietro,R Dhamija,F Di Capua,J Dingfelder,Z Doležal,TV Dong,S Dubey,P Ecker,D Epifanov,T Ferber,D Ferlewicz,BG Fulsom,V Gaur,A Giri,P Goldenzweig,E Graziani,T Gu,K Gudkova,C Hadjivasiliou,K Hayasaka,H Hayashii,S Hazra,MT Hedges,W-S Hou,C-L Hsu,N Ipsita,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,S Jia,Y Jin,KK Joo,T Kawasaki,CH Kim,DY Kim,K-H Kim,YJ Kim,Y-K Kim,P Kodyš,A Korobov,S Korpar,E Kovalenko,P Križan,P Krokovny,T Kuhr,R Kumar,K Kumara,T Kumita,Y-J Kwon,Y-T Lai,SC Lee,D Levit,LK Li,Y Li,YB Li,L Li Gioi,J Libby,D Liventsev,T Luo,M Masuda,T Matsuda,SK Maurya,F Meier,M Merola,F Metzner,K Miyabayashi,R Mizuk,GB Mohanty,R Mussa,I Nakamura,M Nakao,Z Natkaniec,A Natochii,L Nayak,M Nayak,M Niiyama,S Nishida,S Ogawa,H Ono,G Pakhlova,S Pardi,H Park,J Park,S-H Park,S Paul,R Pestotnik,LE Piilonen,T Podobnik,E Prencipe,MT Prim,M Röhrken,G Russo,S Sandilya,L Santelj,V Savinov,G Schnell,C Schwanda,Y Seino,K Senyo,ME Sevior,W Shan,J-G Shiu,E Solovieva,M Starič,K Sumisawa,M Takizawa,U Tamponi,K Tanida,F Tenchini,R Tiwary,K Trabelsi

Journal

arXiv preprint arXiv:2401.04646

Published Date

2024/1/9

We present a measurement of , a charmless decay into two vector mesons, using 772 pairs collected with the Belle detector at the KEKB collider. The decay is observed with a significance of 7.9 standard deviations. We measure a branching fraction , a fraction of longitudinal polarization , and a time-integrated asymmetry = , where the first uncertainties listed are statistical and the second are systematic. This is the first observation of , and the first measurements of and for this decay.

Search for baryon and lepton number violating decays

Authors

S Maity,R Garg,S Bahinipati,V Bhardwaj,H Aihara,S Al Said,DM Asner,H Atmacan,T Aushev,R Ayad,V Babu,Sw Banerjee,M Bauer,J Bennett,M Bessner,D Biswas,A Bobrov,D Bodrov,G Bonvicini,J Borah,M Bračko,P Branchini,A Budano,M Campajola,D Červenkov,M-C Chang,P Chang,K Chilikin,HE Cho,K Cho,S-J Cho,S-K Choi,Y Choi,S Choudhury,S Das,N Dash,G De Pietro,R Dhamija,F Di Capua,J Dingfelder,TV Dong,P Ecker,D Epifanov,T Ferber,BG Fulsom,V Gaur,A Giri,P Goldenzweig,E Graziani,T Gu,K Gudkova,C Hadjivasiliou,K Hayasaka,H Hayashii,S Hazra,W-S Hou,C-L Hsu,K Inami,N Ipsita,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,Y Jin,D Kalita,C Kiesling,CH Kim,DY Kim,K Kinoshita,P Kodyš,A Korobov,S Korpar,P Križan,P Krokovny,M Kumar,R Kumar,K Kumara,A Kuzmin,Y-J Kwon,T Lam,SC Lee,D Levit,LK Li,Y Li,YB Li,L Li Gioi,K Lieret,D Liventsev,M Masuda,T Matsuda,D Matvienko,SK Maurya,F Meier,M Merola,F Metzner,R Mizuk,GB Mohanty,R Mussa,M Nakao,D Narwal,A Natochii,L Nayak,S Nishida,S Ogawa,H Ono,P Oskin,G Pakhlova,S Pardi,H Park,J Park,S-H Park,A Passeri,S Patra,S Paul,TK Pedlar,R Pestotnik,LE Piilonen,T Podobnik,S Prell,E Prencipe,MT Prim,N Rout,G Russo,Y Sakai,S Sandilya,L Santelj,V Savinov,G Schnell,C Schwanda,Y Seino,K Senyo,W Shan,C Sharma,J-G Shiu,E Solovieva,M Starič,M Sumihama,M Takizawa,K Tanida,F Tenchini,K Trabelsi,M Uchida,T Uglov,Y Unno,S Uno,P Urquijo,Y Usov,KE Varvell,E Wang,M-Z Wang

Journal

Physical Review D

Published Date

2024/2/5

We search for the baryon and lepton number violating charm decays, D→ p ℓ, where D is either a D 0 or a D 0 and ℓ is a muon or an electron, using a data sample of 921 fb− 1 collected by the Belle detector at the KEKB asymmetric energy e+ e− collider. In the absence of significant signals, we set upper limits on the branching fractions in the range (5–8)× 10− 7 at a 90% confidence level, depending on the decay mode.

Search for the Lepton Flavor Violating Decays B+ → K+ τ± l∓ (l = e, μ) at Belle

Authors

S Watanuki,G de Marino,K Trabelsi,I Adachi,H Aihara,DM Asner,H Atmacan,V Aulchenko,T Aushev,R Ayad,V Babu,Sw Banerjee,M Bauer,P Behera,K Belous,M Bessner,V Bhardwaj,B Bhuyan,D Biswas,D Bodrov,G Bonvicini,J Borah,A Bozek,M Bracko,P Branchini,TE Browder,A Budano,M Campajola,L Cao,D Cervenkov,M-C Chang,BG Cheon,K Chilikin,K Cho,S-J Cho,S-K Choi,Y Choi,S Choudhury,D Cinabro,S Das,G De Nardo,G De Pietro,R Dhamija,F Di Capua,T V Dong,D Epifanov,T Ferber,D Ferlewicz,BG Fulsom,R Garg,V Gaur,A Garmash,A Giri,P Goldenzweig,E Graziani,T Gu,Y Guan,K Gudkova,C Hadjivasiliou,S Halder,X Han,T Hara,K Hayasaka,H Hayashii,D Herrmann,W-S Hou,C-L Hsu,K Inami,G Inguglia,N Ipsita,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,QP Ji,S Jia,Y Jin,KK Joo,AB Kaliyar,H Kichimi,CH Kim,DY Kim,K-H Kim,Y-K Kim,K Kinoshita,P Kodys,A Korobov,S Korpar,E Kovalenko,P Krizan,P Krokovny,T Kuhr,M Kumar,K Kumara,A Kuzmin,Y-J Kwon,JS Lange,M Laurenza,SC Lee,P Lewis,LK Li,Y Li,L Li Gioi,J Libby,Y-R Lin,D Liventsev,T Matsuda,SK Maurya,F Meier,M Merola,F Metzner,K Miyabayashi,R Mizuk,GB Mohanty,M Nakao,L Nayak,M Nayak,NK Nisar,S Nishida,H Ono,P Oskin,G Pakhlova,S Pardi,H Park,J Park,S-H Park,A Passeri,TK Pedlar,R Pestotnik,LE Piilonen,T Podobnik,E Prencipe,MT Prim,M Roehrken,N Rout,G Russo,S Sandilya,A Sangal,L Santelj,V Savinov,G Schnell,C Schwanda,Y Seino,K Senyo,ME Sevior,W Shan,M Shapkin,J-G Shiu,B Shwartz,F Simon

Published Date

2023/6/28

We present a search for the lepton flavor violating decays B+→ K+ τ±ℓ∓, with ℓ=(e, μ), using the full data sample of 772× 106 BBpairs recorded by the Belle detector at the KEKB asymmetric-energy e+ e-collider. We use events in which one B meson is fully reconstructed in a hadronic decay mode. We find no evidence for B±→ K±τℓ decays and set upper limits on their branching fractions at the 90% confidence level in the (1-3)× 10-5 range. The obtained limits are the world's best results.

Measurement of the mass and width of the Λc (2625)+ charmed baryon and the branching ratios of Λc (2625)+→ ςc0 π+ and Λc (2625)+→ ςc++ π

Authors

D Wang,J Yelton,I Adachi,JK Ahn,H Aihara,DM Asner,H Atmacan,R Ayad,V Babu,Sw Banerjee,M Bauer,P Behera,K Belous,J Bennett,M Bessner,T Bilka,D Biswas,D Bodrov,J Borah,A Bozek,M Bračko,P Branchini,TE Browder,A Budano,M Campajola,D Červenkov,M-C Chang,A Chen,BG Cheon,HE Cho,K Cho,S-J Cho,S-K Choi,Y Choi,S Choudhury,D Cinabro,S Das,G De Nardo,G De Pietro,R Dhamija,F Di Capua,Z DoleŽal,TV Dong,D Dossett,D Epifanov,T Ferber,D Ferlewicz,BG Fulsom,R Garg,V Gaur,A Giri,P Goldenzweig,E Graziani,T Gu,K Gudkova,C Hadjivasiliou,X Han,K Hayasaka,H Hayashii,MT Hedges,C-L Hsu,K Inami,N Ipsita,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,E-J Jang,S Jia,Y Jin,AB Kaliyar,KH Kang,T Kawasaki,C Kiesling,CH Kim,DY Kim,K-H Kim,Y-K Kim,K Kinoshita,P Kodyš,A Korobov,S Korpar,E Kovalenko,P KriŽan,P Krokovny,M Kumar,R Kumar,K Kumara,Y-J Kwon,T Lam,JS Lange,SC Lee,D Levit,P Lewis,LK Li,Y Li,YB Li,L Li Gioi,J Libby,K Lieret,Y-R Lin,D Liventsev,T Matsuda,D Matvienko,F Meier,M Merola,F Metzner,K Miyabayashi,R Mizuk,GB Mohanty,R Mussa,I Nakamura,T Nakano,M Nakao,Z Natkaniec,A Natochii,L Nayak,M Nayak,NK Nisar,S Nishida,S Ogawa,H Ono,P Oskin,G Pakhlova,S Pardi,H Park,J Park,S Patra,S Paul,TK Pedlar,R Pestotnik,LE Piilonen,T Podobnik,E Prencipe,MT Prim,N Rout,G Russo,S Sandilya,A Sangal,L Santelj,V Savinov,G Schnell,J Schueler,C Schwanda,Y Seino,K Senyo,ME Sevior,W Shan,M Shapkin,C Sharma

Journal

Physical Review D

Published Date

2023

Using the entire data sample of 980 fb-1 collected at or near the ϒ(4S) resonance with the Belle detector operating at the KEKB asymmetric-energy e+e- collider, we report the measurement of the mass, width, and the branching ratios of the Λc(2625)+ charmed baryon. The mass difference between Λc(2625)+ and Λc+ is measured to be M(Λc(2625)+)-M(Λc+)=341.518±0.006±0.049 MeV/c2. The upper limit on the width is measured to be Γ(Λc(2625)+)<0.52 MeV/c2 at 90% confidence level. Based on a full Dalitz plot fit, branching ratios with respect to the mode Λc(2625)+→Λc+π+π- are measured to be B(Λc(2625)+→ςc0π+)B(Λc(2625)+→Λc+π+π-)=(5.19±0.23±0.40)% and B(Λc(2625)+→ςc++π-)B(Λc(2625)+→Λc+π+π-)=(5.13±0.26±0.32)%, where the first and second uncertainties are statistical and systematic, respectively. These measurements can be used to further constrain the parameters of the underlying theoretical models. © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the https://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

Measurement of two-photon decay width of xc2 (1P) in??? xc2 (1P)? J/???????? i? at Belle

Authors

Y Seino,K Hayasaka,S Uehara,I Adachi,H Aihara,S Al Said,DM Asner,H Atmacan,T Aushev,R Ayad,V Babu,S Bahinipati,P Behera,K Belous,J Bennett,M Bessner,V Bhardwaj,B Bhuyan,T Bilka,D Bodrov,G Bonvicini,J Borah,A Bozek,M Bracko,P Branchini,TE Browder,A Budano,M Campajola,D Cervenkov,M-C Chang,P Chang,V Chekelian,A Chen,BG Cheon,K Chilikin,HE Cho,K Cho,S-J Cho,S-K Choi,Y Choi,S Choudhury,D Cinabro,S Das,G De Pietro,R Dhamija,F Di Capua,J Dingfelder,Z Dolezal,TV Dong,D Epifanov,T Ferber,D Ferlewicz,BG Fulsom,R Garg,V Gaur,N Gabyshev,A Garmash,A Giri,P Goldenzweig,E Graziani,C Hadjivasiliou,H Hayashii,W-S Hou,C-L Hsu,K Inami,N Ipsita,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,E-J Jang,S Jia,Y Jin,KK Joo,H Kakuno,KH Kang,G Karyan,T Kawasaki,C Kiesling,CH Kim,DY Kim,K-H Kim,Y-K Kim,P Kodys,T Konno,A Korobov,S Korpar,E Kovalenko,P Krizan,P Krokovny,M Kumar,R Kumar,K Kumara,T Lam,JS Lange,SC Lee,CH Li,J Li,LK Li,Y Li,YB Li,L Li Gioi,J Libby,K Lieret,M Masuda,T Matsuda,D Matvienko,SK Maurya,F Meier,M Merola,K Miyabayashi,H Miyata,R Mizuk,GB Mohanty,M Mrvar,R Mussa,M Nakao,Z Natkaniec,A Natochii,L Nayak,M Nayak,M Niiyama,NK Nisar,S Nishida,S Ogawa,H Ono,Y Onuki,P Oskin,P Pakhlov,G Pakhlova,S Pardi,H Park,S-H Park,S Patra,S Paul,TK Pedlar,R Pestotnik,LE Piilonen,T Podobnik,E Prencipe,MT Prim,N Rout,G Russo,S Sandilya,A Sangal,L Santelj,T Sanuki,V Savinov,G Schnell,J Schueler

Published Date

2023/1/30

We report the measurement of the two-photon decay width of χc2 (1P) in two-photon processes at the Belle experiment. We analyze the process γγ→ χc2 (1P)→ J/ψγ, J/ψ→ ℓ+ ℓ−(ℓ= e or μ) using a data sample of 971 fb− 1 collected with the Belle detector at the KEKB e+ e− collider. In this analysis, the product of the two-photon decay width of χc2 (1P) and the branching fraction is determined to be Γγγ (χc2 (1P)) B (χc2 (1P)→ J/ψγ) B (J/ψ→ ℓ+ ℓ−)= 14.8±0.3 (stat.)±0.7 (syst.) eV, which corresponds to Γγγ (χc2 (1P))= 653±13 (stat.)±31 (syst.)±17 (BR) eV, where the third uncertainty is from B (χc2 (1P)→ J/ψγ) and B (J/ψ→ ℓ+ ℓ−).[Figure not available: see fulltext.].

Measurements of branching fractions of and and asymmetry parameters of , , and

Authors

SX Li,CP Shen,I Adachi,JK Ahn,H Aihara,DM Asner,H Atmacan,T Aushev,R Ayad,V Babu,S Bahinipati,Sw Banerjee,P Behera,K Belous,J Bennett,M Bessner,T Bilka,D Biswas,A Bobrov,D Bodrov,J Borah,M Bračko,P Branchini,TE Browder,A Budano,M Campajola,D Červenkov,M-C Chang,P Chang,V Chekelian,A Chen,BG Cheon,K Chilikin,HE Cho,K Cho,S-J Cho,S-K Choi,Y Choi,S Choudhury,D Cinabro,G De Pietro,R Dhamija,F Di Capua,TV Dong,T Ferber,A Frey,BG Fulsom,V Gaur,A Giri,P Goldenzweig,E Graziani,T Gu,K Gudkova,C Hadjivasiliou,K Hayasaka,H Hayashii,C-L Hsu,K Inami,N Ipsita,A Ishikawa,R Itoh,WW Jacobs,Y Jin,KK Joo,D Kalita,AB Kaliyar,C Kiesling,CH Kim,DY Kim,K-H Kim,Y-K Kim,P Kodyš,T Konno,A Korobov,S Korpar,E Kovalenko,P Krokovny,T Kuhr,M Kumar,R Kumar,K Kumara,A Kuzmin,Y-J Kwon,T Lam,JS Lange,SC Lee,LK Li,Y Li,YB Li,L Li Gioi,J Libby,K Lieret,M Masuda,T Matsuda,SK Maurya,F Meier,M Merola,F Metzner,R Mizuk,R Mussa,I Nakamura,M Nakao,Z Natkaniec,A Natochii,L Nayak,M Niiyama,NK Nisar,S Nishida,S Ogawa,H Ono,Y Onuki,P Oskin,G Pakhlova,S Pardi,H Park,S Patra,S Paul,TK Pedlar,R Pestotnik,LE Piilonen,E Prencipe,MT Prim,N Rout,G Russo,D Sahoo,S Sandilya,A Sangal,L Santelj,V Savinov,G Schnell,C Schwanda,Y Seino,K Senyo,ME Sevior,W Shan,M Shapkin,C Sharma,J-G Shiu,A Sokolov,E Solovieva,M Starič,M Sumihama,K Sumisawa,T Sumiyoshi,W Sutcliffe,M Takizawa,U Tamponi,K Tanida,F Tenchini,M Uchida

Journal

Physical Review D

Published Date

2023/2/14

We report a study of Λ c+→ Σ+ π 0, Λ c+→ Σ+ η, and Λ c+→ Σ+ η′ using the data sample corresponding to an integrated luminosity of 980 fb− 1 collected with the Belle detector at the KEKB asymmetric-energy e+ e− collider. The branching fractions relative to Λ c+→ Σ+ π 0 are measured as B Λ c+→ Σ+ η/B Λ c+→ Σ+ π 0= 0.25±0.03±0.01 and B Λ c+→ Σ+ η′/B Λ c+→ Σ+ π 0= 0.33±0.06±0.02. Using B Λ c+→ Σ+ π 0=(1.25±0.10)%, we obtain B Λ c+→ Σ+ η=(3.14±0.35±0.17±0.25)× 10− 3 and B Λ c+→ Σ+ η′=(4.16±0.75±0.25±0.33)× 10− 3. Here the uncertainties are statistical, systematic, and from B Λ c+→ Σ+ π 0, respectively. The ratio of the branching fraction of Λ c+→ Σ+ η′ with respect to that of Λ c+→ Σ+ η is measured to be B Λ c+→ Σ+ η′/B Λ c+→ Σ+ η= 1.34±0.28±0.08. We update the asymmetry parameter of Λ c+→ Σ+ π 0, α Σ+ π 0=− 0.48±0.02±0.02, with a considerably improved precision. The asymmetry …

Measurement of the branching fraction and search for violation in decays at Belle

Authors

Aman Sangal,AJ Schwartz,H Aihara,S Al Said,DM Asner,H Atmacan,V Aulchenko,T Aushev,R Ayad,V Babu,S Bahinipati,P Behera,K Belous,J Bennett,M Bessner,V Bhardwaj,B Bhuyan,T Bilka,D Bodrov,G Bonvicini,J Borah,A Bozek,M Bračko,P Branchini,TE Browder,A Budano,D Červenkov,A Chen,BG Cheon,K Chilikin,K Cho,S-J Cho,S-K Choi,Y Choi,S Choudhury,D Cinabro,N Dash,G De Pietro,R Dhamija,F Di Capua,Z Doležal,TV Dong,D Dossett,D Epifanov,A Frey,BG Fulsom,R Garg,V Gaur,N Gabyshev,A Garmash,A Giri,P Goldenzweig,E Graziani,Y Guan,K Gudkova,C Hadjivasiliou,K Hayasaka,H Hayashii,D Herrmann,W-S Hou,C-L Hsu,K Inami,N Ipsita,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,E-J Jang,S Jia,Y Jin,KK Joo,KH Kang,T Kawasaki,C Kiesling,CH Kim,DY Kim,K-H Kim,K Kinoshita,P Kodyš,T Konno,A Korobov,S Korpar,E Kovalenko,P Križan,P Krokovny,M Kumar,R Kumar,K Kumara,Y-J Kwon,T Lam,JS Lange,M Laurenza,SC Lee,CH Li,LK Li,Y Li,YB Li,L Li Gioi,J Libby,K Lieret,D Liventsev,A Martini,M Masuda,D Matvienko,SK Maurya,M Merola,F Metzner,K Miyabayashi,R Mizuk,GB Mohanty,HK Moon,R Mussa,M Nakao,D Narwal,Z Natkaniec,A Natochii,L Nayak,M Nayak,M Niiyama,NK Nisar,S Nishida,H Ono,Y Onuki,P Oskin,P Pakhlov,G Pakhlova,S Pardi,H Park,S-H Park,A Passeri,S Patra,S Paul,TK Pedlar,R Pestotnik,LE Piilonen,T Podobnik,E Prencipe,MT Prim,N Rout,G Russo,S Sandilya,L Santelj,T Sanuki,V Savinov,G Schnell,J Schueler,C Schwanda,Y Seino,K Senyo,ME Sevior

Journal

Physical Review D

Published Date

2023/3/7

We measure the branching fraction for the Cabibbo-suppressed decay D 0→ K S 0 K S 0 π+ π− and search for C P violation via a measurement of the C P asymmetry A C P as well as the T-odd triple-product asymmetry a C P T. We use 922 fb− 1 of data recorded by the Belle experiment, which ran at the KEKB asymmetric-energy e+ e− collider. The branching fraction is measured relative to the Cabibbo-favored normalization channel D 0→ K S 0 π+ π−; the result is B (D 0→ K S 0 K S 0 π+ π−)=[4.79±0.08 (stat)±0.10 (syst)±0.31 (norm)]× 10− 4, where the first uncertainty is statistical, the second is systematic, and the third is from uncertainty in the normalization channel. We also measure A C P=[− 2.51±1.44 (stat)− 0.10+ 0.11 (syst)]%, and a C P T=[− 1.95±1.42 (stat)− 0.12+ 0.14 (syst)]%. These results show no evidence of C P violation.

Measurement of the Lifetime

Authors

F Abudinén,L Aggarwal,H Ahmed,JK Ahn,H Aihara,N Akopov,A Aloisio,N Anh Ky,DM Asner,H Atmacan,T Aushev,V Aushev,V Babu,H Bae,P Bambade,Sw Banerjee,S Bansal,J Baudot,M Bauer,A Baur,A Beaubien,J Becker,JV Bennett,E Bernieri,FU Bernlochner,V Bertacchi,M Bertemes,E Bertholet,M Bessner,S Bettarini,V Bhardwaj,F Bianchi,T Bilka,D Biswas,D Bodrov,A Bolz,G Bonvicini,A Bozek,M Bračko,P Branchini,RA Briere,TE Browder,A Budano,S Bussino,M Campajola,L Cao,G Casarosa,C Cecchi,M-C Chang,P Chang,R Cheaib,P Cheema,C Chen,YQ Chen,Y-T Chen,BG Cheon,K Chilikin,K Chirapatpimol,H-E Cho,K Cho,S-J Cho,S-K Choi,S Choudhury,D Cinabro,L Corona,LM Cremaldi,S Cunliffe,F Dattola,E De La Cruz-Burelo,SA De La Motte,G De Nardo,M De Nuccio,G De Pietro,R de Sangro,M Destefanis,A De Yta-Hernandez,R Dhamija,A Di Canto,F Di Capua,J Dingfelder,Z Doležal,I Domínguez Jiménez,TV Dong,M Dorigo,K Dort,D Dossett,S Dreyer,G Dujany,M Eliachevitch,D Epifanov,P Feichtinger,T Ferber,D Ferlewicz,T Fillinger,G Finocchiaro,K Flood,A Fodor,F Forti,A Frey,BG Fulsom,A Gabrielli,E Ganiev,M Garcia-Hernandez,A Gaz,A Gellrich,G Ghevondyan,R Giordano,A Giri,A Glazov,B Gobbo,R Godang,P Goldenzweig,W Gradl,S Granderath,D Greenwald,T Gu,Y Guan,K Gudkova,J Guilliams,S Halder,K Hara,O Hartbrich,K Hayasaka,H Hayashii,S Hazra,C Hearty,I Heredia de la Cruz,M Hernández Villanueva,A Hershenhorn,T Higuchi,M Hohmann,T Humair,T Iijima,K Inami,G Inguglia,N Ipsita,A Ishikawa,S Ito,R Itoh,M Iwasaki,Y Iwasaki,P Jackson,WW Jacobs,David E Jaffe,QP Ji,Y Jin,H Junkerkalefeld,M Kaleta,J Kandra,KH Kang

Journal

Physical review letters

Published Date

2023/2/16

An absolute measurement of the Λ c+ lifetime is reported using Λ c+→ p K− π+ decays in events reconstructed from data collected by the Belle II experiment at the SuperKEKB asymmetric-energy electron-positron collider. The total integrated luminosity of the data sample, which was collected at center-of-mass energies at or near the ϒ (4 S) resonance, is 207.2 fb− 1. The result, τ (Λ c+)= 203.20±0.89±0.77 fs, where the first uncertainty is statistical and the second systematic, is the most precise measurement to date and is consistent with previous determinations.

Measurement of the lifetime at Belle II

Authors

F Abudinén,Ichiro Adachi,Latika Aggarwal,Hossain Ahmed,Hiroaki Aihara,Norayr Akopov,Alberto Aloisio,N Anh Ky,David Mark Asner,Tagir Aushev,V Aushev,Hanwook Bae,Philip Bambade,Sw Banerjee,J Baudot,M Bauer,A Beaubien,J Becker,PK Behera,JV Bennett,E Bernieri,FU Bernlochner,V Bertacchi,M Bertemes,E Bertholet,M Bessner,S Bettarini,B Bhuyan,F Bianchi,T Bilka,D Biswas,D Bodrov,A Bolz,J Borah,A Bozek,M Bračko,P Branchini,RA Briere,TE Browder,A Budano,S Bussino,M Campajola,L Cao,G Casarosa,C Cecchi,M-C Chang,P Cheema,V Chekelian,YQ Chen,K Chilikin,K Chirapatpimol,H-E Cho,K Cho,S-J Cho,S-K Choi,S Choudhury,D Cinabro,L Corona,S Cunliffe,S Das,F Dattola,E De La Cruz-Burelo,SA De La Motte,G De Marino,G De Nardo,M De Nuccio,G De Pietro,R De Sangro,M Destefanis,S Dey,A De Yta-Hernandez,R Dhamija,A Di Canto,F Di Capua,J Dingfelder,Z Doležal,I Domínguez Jiménez,TV Dong,M Dorigo,K Dort,S Dreyer,S Dubey,G Dujany,P Ecker,M Eliachevitch,D Epifanov,P Feichtinger,T Ferber,D Ferlewicz,T Fillinger,G Finocchiaro,A Fodor,F Forti,BG Fulsom,E Ganiev,V Gaur,A Gaz,A Gellrich,G Ghevondyan,R Giordano,A Giri,A Glazov,B Gobbo,R Godang,P Goldenzweig,W Gradl,S Granderath,E Graziani,D Greenwald,T Gu,Y Guan,K Gudkova,J Guilliams,K Hayasaka,H Hayashii,S Hazra,C Hearty,I Heredia de la Cruz,M Hernández Villanueva,A Hershenhorn,T Higuchi,EC Hill,H Hirata,M Hohmann,C-L Hsu,T Iijima,K Inami,G Inguglia,N Ipsita,A Ishikawa,S Ito,R Itoh,M Iwasaki,P Jackson,WW Jacobs,DE Jaffe,E-J Jang,S Jia,Y Jin,KK Joo,H Junkerkalefeld,AB Kaliyar,KH Kang,R Karl,G Karyan,C Kiesling,C-H Kim,DY Kim,K-H Kim,Y-K Kim

Journal

Physical Review D

Published Date

2023/2/21

We report on a measurement of the Ω c 0 lifetime using Ω c 0→ Ω− π+ decays reconstructed in e+ e−→ c c data collected by the Belle II experiment and corresponding to 207 fb− 1 of integrated luminosity. The result, τ (Ω c 0)= 243±48 (stat)±11 (syst) fs, agrees with recent measurements indicating that the Ω c 0 is not the shortest-lived weakly decaying charmed baryon.

Search for the decay at the Belle experiment

Authors

TV Dong,T Luo,I Adachi,H Aihara,DM Asner,H Atmacan,V Aulchenko,T Aushev,R Ayad,V Babu,S Bahinipati,P Behera,K Belous,F Bernlochner,M Bessner,B Bhuyan,T Bilka,J Biswal,A Bobrov,A Bozek,M Bračko,P Branchini,TE Browder,A Budano,M Campajola,D Červenkov,M-C Chang,P Chang,A Chen,BG Cheon,K Chilikin,HE Cho,K Cho,S-J Cho,S-K Choi,Y Choi,S Choudhury,D Cinabro,S Cunliffe,T Czank,S Das,G De Nardo,G De Pietro,R Dhamija,F Di Capua,J Dingfelder,Z Doležal,S Dubey,D Epifanov,T Ferber,D Ferlewicz,BG Fulsom,R Garg,V Gaur,N Gabyshev,A Garmash,A Giri,P Goldenzweig,E Graziani,T Gu,K Gudkova,T Hara,O Hartbrich,K Hayasaka,M Hernandez Villanueva,W-S Hou,C-L Hsu,K Inami,G Inguglia,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,E-J Jang,S Jia,Y Jin,KK Joo,J Kahn,KH Kang,H Kichimi,C Kiesling,CH Kim,DY Kim,SH Kim,Y-K Kim,TD Kimmel,P Kodyš,T Konno,A Korobov,S Korpar,E Kovalenko,P Križan,R Kroeger,P Krokovny,T Kuhr,R Kulasiri,M Kumar,R Kumar,K Kumara,A Kuzmin,Y-J Kwon,M Laurenza,SC Lee,J Li,LK Li,YB Li,L Li Gioi,J Libby,K Lieret,D Liventsev,C MacQueen,M Masuda,T Matsuda,D Matvienko,M Merola,F Metzner,K Miyabayashi,R Mizuk,GB Mohanty,M Nakao,A Natochii,L Nayak,M Niiyama,NK Nisar,S Nishida,K Nishimura,S Ogawa,H Ono,Y Onuki,P Oskin,P Pakhlov,G Pakhlova,S Pardi,H Park,S-H Park,S Patra,S Paul,TK Pedlar,R Pestotnik,LE Piilonen,T Podobnik,V Popov,E Prencipe,MT Prim,A Rostomyan,N Rout,G Russo,D Sahoo,S Sandilya,A Sangal

Journal

Physical Review D

Published Date

2023/7/13

This paper presents a search for the rare flavor-changing neutral current process B 0→ K* 0 τ+ τ− using data taken with the Belle detector at the KEKB asymmetric energy e+ e− collider. The analysis is based on the entire ϒ (4 S) resonance data sample of 711 fb− 1, corresponding to 772× 10 6 B Bpairs. In our search we fully reconstruct the companion B meson produced in the process e+ e−→ ϒ (4 S)→ B Bfrom its hadronic decay modes, and look for the decay B 0→ K* 0 τ+ τ− in the rest of the event. No evidence for a signal is found. We report an upper limit on the branching fraction B (B 0→ K* 0 τ+ τ−)< 3.1× 10− 3 at 90% confidence level. This is the first direct limit on B (B 0→ K* 0 τ+ τ−).

See List of Professors in Mario Merola University(Università degli Studi di Napoli Federico II)

Mario Merola FAQs

What is Mario Merola's h-index at Università degli Studi di Napoli Federico II?

The h-index of Mario Merola has been 109 since 2020 and 206 in total.

What are Mario Merola's top articles?

The articles with the titles of

Pressure correction study for the CMS iRPC detector

Improved resistive plate chambers for HL-LHC upgrade of CMS

Search for a dark leptophilic scalar produced in association with pair in annihilation at center-of-mass energies near 10.58 GeV

Angular analysis of in the low- region with new electron identification at Belle

Measurement of branching fractions and direct asymmetries for and decays at Belle II

Search for Baryon-Number-Violating Processes in Decays to the Final State

Search for the decay at Belle experiment

Search for the semileptonic decays at Belle

...

are the top articles of Mario Merola at Università degli Studi di Napoli Federico II.

What are Mario Merola's research interests?

The research interests of Mario Merola are: Experimental Particle Physics

What is Mario Merola's total number of citations?

Mario Merola has 171,671 citations in total.

Useful Links