Yu Zhang

North Western University

H-index: 213

Asia-Bangladesh

About Yu Zhang

Yu Zhang, With an exceptional h-index of 213 and a recent h-index of 149 (since 2020), a distinguished researcher at North Western University, specializes in the field of On-chip Network, Multicore Network, DRAM Architecture.

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

Measurement of production in collisions at TeV at LHCb

Measurement of the Electromagnetic Transition Form-factors in the decays

Helium identification with LHCb

arXiv : Measurement of the Branching Fraction of Decays

Measurements of Normalized Differential Cross Sections of Inclusive Production in Annihilation at Energy from 2.0000 to 3.6710 GeV

Observation of +c.c

A New Look at the Scalar Meson via Decays

Study of , , , , and

Yu Zhang Information

University	North Western University
Position	___
Citations(all)	212490
Citations(since 2020)	103920
Cited By	60475
hIndex(all)	213
hIndex(since 2020)	149
i10Index(all)	1150
i10Index(since 2020)	1002
Email	Access Email
University Profile Page	North Western University

Yu Zhang Skills & Research Interests

On-chip Network

Multicore Network

DRAM Architecture

Top articles of Yu Zhang

Measurement of production in collisions at TeV at LHCb

Authors

R Aaij,ASW Abdelmotteleb,C Abellan Beteta,F Abudinén,T Ackernley,B Adeva,M Adinolfi,P Adlarson,H Afsharnia,C Agapopoulou,CA Aidala,Z Ajaltouni,S Akar,K Akiba,P Albicocco,J Albrecht,F Alessio,M Alexander,A Alfonso Albero,Z Aliouche,P Alvarez Cartelle,R Amalric,S Amato,JL Amey,Y Amhis,L An,L Anderlini,M Andersson,A Andreianov,M Andreotti,D Andreou,D Ao,F Archilli,A Artamonov,M Artuso,E Aslanides,M Atzeni,B Audurier,IB Bachiller Perea,S Bachmann,M Bachmayer,JJ Back,A Bailly-reyre,P Baladron Rodriguez,V Balagura,W Baldini,J Baptista de Souza Leite,M Barbetti,RJ Barlow,S Barsuk,W Barter,M Bartolini,F Baryshnikov,JM Basels,G Bassi,B Batsukh,A Battig,A Bay,A Beck,M Becker,F Bedeschi,IB Bediaga,A Beiter,S Belin,V Bellee,K Belous,I Belov,I Belyaev,G Benane,G Bencivenni,E Ben-Haim,A Berezhnoy,R Bernet,S Bernet Andres,D Berninghoff,HC Bernstein,C Bertella,A Bertolin,C Betancourt,F Betti,Ia Bezshyiko,S Bhasin,J Bhom,L Bian,MS Bieker,NV Biesuz,P Billoir,A Biolchini,M Birch,FCR Bishop,A Bitadze,A Bizzeti,MP Blago,T Blake,F Blanc,JE Blank,S Blusk,D Bobulska,JA Boelhauve,O Boente Garcia,T Boettcher,A Boldyrev,CS Bolognani,R Bolzonella,N Bondar,F Borgato,S Borghi,M Borsato,JT Borsuk,SA Bouchiba,TJV Bowcock,A Boyer,C Bozzi,MJ Bradley,S Braun,A Brea Rodriguez,J Brodzicka,A Brossa Gonzalo,J Brown,D Brundu,A Buonaura,L Buonincontri,AT Burke,C Burr,A Bursche,A Butkevich,JS Butter,J Buytaert,W Byczynski,S Cadeddu,H Cai,R Calabrese,L Calefice,S Cali,M Calvi,M Calvo Gomez,P Campana,DH Campora Perez,AF Campoverde Quezada,S Capelli,L Capriotti,A Carbone,R Cardinale,A Cardini,P Carniti,L Carus,A Casais Vidal,R Caspary,G Casse,M Cattaneo

Journal

Physical Review C

Published Date

2024/4/1

A study of prompt Ξ c+ production in proton-lead collisions is performed with the LHCb experiment at a center-of-mass energy per nucleon pair of 8.16 TeV in 2016 in p Pb and Pb p collisions with an estimated integrated luminosity of approximately 12.5 and 17.4 nb− 1, respectively. The Ξ c+ production cross section, as well as the Ξ c+ to Λ c+ production cross-section ratio, are measured as a function of the transverse momentum and rapidity and compared to the latest theory predictions. The forward-backward asymmetry is also measured as a function of the Ξ c+ transverse momentum. The results provide strong constraints on theoretical calculation and are a unique input for hadronization studies in different collision systems.

Measurement of the Electromagnetic Transition Form-factors in the decays

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,Orestis Afedulidis,XC Ai,Riccardo Aliberti,Antonio Amoroso,Qi An,Yu Bai,Olga Bakina,I Balossino,Y Ban,H-R Bao,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,GR Che,C Chen,CH Chen,Chao Chen,G Chen,HS Chen,ML Chen,SJ Chen,SL Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,ZY Chen,SK Choi,X Chu,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,CQ Deng,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,MC Du,SX Du,ZH Duan,P Egorov,YH Fan,J Fang,SS Fang,WX Fang,Y Fang,YQ Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,YT Feng,K Fischer,M Fritsch,CD Fu,JL Fu,YW Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,ZL Guan,AQ Guo,LB Guo,MJ Guo,RP Guo,YP Guo,A Guskov,J Gutierrez,KL Han,TT Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,XT Hou,YR Hou,ZL Hou,BY Hu,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,T Hussain,F Hölzken

Journal

arXiv preprint arXiv:2402.01993

Published Date

2024/2/3

With a sample of events accumulated with the BESIII detector, we analyze the decays via the process . The branching fractions are measured to be $\mathcal{B}(\eta'\rightarrow\pi^+\pi^-e^+e^-)=(2.45\pm0.02(\rm{stat.})\pm0.08(\rm{syst.})) \times10^{-3}$ and $\mathcal{B}(\eta'\rightarrow\pi^+\pi^-\mu^+\mu^-)=(2.16\pm0.12(\rm{stat.})\pm0.06(\rm{syst.}))\times10^{-5}$, and the ratio is $\frac{\mathcal{B}(\eta'\rightarrow\pi^{+}\pi^{-}e^{+}e^{-})}{\mathcal{B}(\eta'\rightarrow\pi^{+}\pi^{-}\mu^{+}\mu^{-})} = 113.4\pm0.9(\rm{stat.})\pm3.7(\rm{syst.})$. In addition, by combining the and decays, the slope parameter of the electromagnetic transition form factor is measured to be , which is consistent with previous measurements from BESIII and theoretical predictions from the VMD model. The asymmetry in the angle between the and decay planes, which has the potential to reveal the -violation originating from an unconventional electric dipole transition, is also investigated. The asymmetry parameters are determined to be $\mathcal{A}_{CP}(\eta'\rightarrow\pi^+\pi^-e^+e^-)=(-0.21\pm0.73(\rm{stat.})\pm0.01(\rm{syst.}))\%$ and $\mathcal{A}_{CP}(\eta'\rightarrow\pi^+\pi^-\mu^+\mu^-)=(0.62\pm4.71(\rm{stat.})\pm0.08(\rm{syst.}))\%$, implying that no evidence of -violation is observed at the present statistics. Finally, an axion-like particle is searched for via the decay , and upper limits of the branching fractions are presented for the mass assumptions of the axion-like particle in the range of .

Helium identification with LHCb

Authors

Roel Aaij,Ahmed Sameh Wagih Abdelmotteleb,C Abellan Beteta,F Abudinén,Thomas Ackernley,Bernardo Adeva,Marco Adinolfi,P Adlarson,Christina Agapopoulou,Christine Angela Aidala,Ziad Ajaltouni,Simon Akar,Kazuyoshi Akiba,Pietro Albicocco,Johannes Albrecht,Federico Alessio,Michael Alexander,A Alfonso Albero,Zakariya Aliouche,P Alvarez Cartelle,Renaud Amalric,Sandra Amato,Jake Lewis Amey,Yasmine Amhis,Liupan An,Lucio Anderlini,Martin Andersson,Aleksei Andreianov,Pasquale Andreola,Mirco Andreotti,Dimitra Andreou,AA Anelli,Dong Ao,Flavio Archilli,Matteo Argenton,S Arguedas Cuendis,Alexander Artamonov,Marina Artuso,Elie Aslanides,Michele Atzeni,Benjamin Audurier,David Bacher,I Bachiller Perea,Sebastian Bachmann,Marie Bachmayer,JJ Back,A Bailly-reyre,P Baladron Rodriguez,V Balagura,W Baldini,J Baptista de Souza Leite,M Barbetti,IR Barbosa,RJ Barlow,S Barsuk,W Barter,M Bartolini,Fedor Baryshnikov,Jan-Marc Basels,Giovanni Bassi,Baasansuren Batsukh,Alexander Battig,Aurelio Bay,Anja Beck,Maik Becker,Franco Bedeschi,IB Bediaga,Andrew Beiter,Samuel Belin,Violaine Bellee,Konstantin Belous,Ilia Belov,Ivan Belyaev,Gaya Benane,Giovanni Bencivenni,Eli Ben-Haim,Alexander Berezhnoy,Roland Bernet,S Bernet Andres,HC Bernstein,C Bertella,A Bertolin,C Betancourt,F Betti,J Bex,Ia Bezshyiko,J Bhom,MS Bieker,NV Biesuz,P Billoir,A Biolchini,M Birch,FCR Bishop,A Bitadze,A Bizzeti,MP Blago,T Blake,F Blanc,JE Blank,S Blusk,D Bobulska,V Bocharnikov,JA Boelhauve,O Boente Garcia,T Boettcher,A Bohare,A Boldyrev,CS Bolognani,R Bolzonella,N Bondar,F Borgato,S Borghi,M Borsato,JT Borsuk,SA Bouchiba,TJV Bowcock,A Boyer,C Bozzi,MJ Bradley,S Braun,A Brea Rodriguez,N Breer,J Brodzicka,A Brossa Gonzalo,J Brown,D Brundu,A Buonaura,L Buonincontri,AT Burke,C Burr,A Bursche,A Butkevich,JS Butter,J Buytaert,W Byczynski,S Cadeddu,H Cai,R Calabrese,L Calefice,S Cali,M Calvi,M Calvo Gomez,J Cambon Bouzas,P Campana,DH Campora Perez,AF Campoverde Quezada,S Capelli,L Capriotti,R Caravaca-Mora,A Carbone

Journal

Journal of Instrumentation

Published Date

2024/2/1

The identification of helium nuclei at LHCb is achieved using a method based on measurements of ionisation losses in the silicon sensors and timing measurements in the Outer Tracker drift tubes. The background from photon conversions is reduced using the RICH detectors and an isolation requirement. The method is developed using ???????? collision data at

arXiv : Measurement of the Branching Fraction of Decays

Authors

R Aaij,W Kucewicz,X Zhu,I Bachiller Perea,H Pham,G Simi,S Esen,M van Veghel,M Richardson-Slipper,D Johnson,C Lazzeroni,M Barbetti,S Kretzschmar,S Bachmann,L Martinazzoli,H Yin,S Li,A Comerma-Montells,M Waterlaat,A Buonaura,S Libralon,E Eckstein,AM Schertz,M Calvo Gomez,P Di Nezza,A Bertolin,S Joshi,A Boldyrev,T Li,LH Uecker,S Petrucci,M Santimaria,V Sriskaran,C Marin Benito,CY Yu,M Martinelli,S Mokhnenko,Y Amhis,M Schmelling,F Teubert,T Kirn,A Terentev,A Solomin,S Kholodenko,DJ White,C De Angelis,V Coco,P Duda,J Reich,L Dufour,DH Campora Perez,E Ursov,Y Zhang,J Bhom,V Denysenko,X Wang,C Hadjivasiliou,T Senger,V Dedu,L Del Buono,L Mcconnell,P Spradlin,W Duan,N Neufeld,H-P Dembinski,Y Luo,L Fantini,H Mu,P Ilten,B Jost,R Lefèvre,B Pietrzyk,U Marconi,RS Sharma,L Anderlini,L Kravchuk,A Pellegrino,CJ Pawley,I Juszczak,R Schwemmer,DJD Thompson,C Sanchez Gras,V Duk,RH O'Neil,P Gironella Gironell,Z Ajaltouni,H Jage,A Bay,B Mitreska,A Palano,S Ferreres Sole,P-R Li,M Palutan,A Chubykin,E Ejopu,J Mauricio,JL Amey,C Frei,M Feo,A Zharkova,G Casse,S Amato,P De Simone,F Pisani,S Cali,A Ukleja,C Patrignani,EJ Walton,M Pepe Altarelli,T Lin,G Gong,H Miao,A Konoplyannikov,L Pica,P Andreola,E Curras Rivera,P Adlarson,D Brundu,D Lacarrere,F Hemmer,MD Tat,D Saranin,M Franco Sevilla,M De Cian,HN Nur,AD Fernez,X Vilasis-Cardona,A Valassi,A Beck,L Congedo,MK Wilkinson,J Closier,S Monteil,C Lucarelli,BK Jashal,D Riccardi,P Kravchenko,K De Bruyn,FL Liu,JE Blank,CL Da Silva,IR Barbosa,M Rebollo De Miguel,F De Vellis,R Ribatti,W Krzemien,M Frank,T Skwarnicki,L Capriotti,L Henry

Published Date

2024/2/8

The ratio of branching fractions between B0→ J/ψπ0 and B+→ J/ψK∗+ decays is measured with proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb− 1. The measured value is

Measurements of Normalized Differential Cross Sections of Inclusive Production in Annihilation at Energy from 2.0000 to 3.6710 GeV

Authors

M Ablikim,MN Achasov,P Adlarson,O Afedulidis,XC Ai,R Aliberti,A Amoroso,Q An,D Anderle,Y Bai,O Bakina,I Balossino,Y Ban,H-R Bao,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,GR Che,C Chen,CH Chen,Chao Chen,G Chen,HS Chen,HY Chen,ML Chen,SJ Chen,SL Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,ZY Chen,SK Choi,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,CQ Deng,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,MC Du,SX Du,YY Duan,ZH Duan,P Egorov,YH Fan,J Fang,SS Fang,WX Fang,Y Fang,YQ Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,YT Feng,M Fritsch,CD Fu,JL Fu,YW Fu,H Gao,XB Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,L Ge,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,ZL Guan,AQ Guo,LB Guo,MJ Guo,RP Guo,YP Guo,A Guskov,J Gutierrez,KL Han,TT Han,F Hanisch,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,XT Hou,YR Hou,ZL Hou,BY Hu,HM Hu,JF Hu,SL Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang

Journal

arXiv preprint arXiv:2401.17873

Published Date

2024/1/31

Using data samples collected with the BESIII detector operating at the BEPCII storage ring, the cross section of the inclusive process , normalized by the total cross section of , is measured at eight center-of-mass energy points from 2.0000 GeV to 3.6710 GeV. These are the first measurements with momentum dependence in this energy region. Our measurement shows a significant discrepancy from calculations with the existing fragmentation functions. To address this discrepancy, a new QCD analysis is performed at the next-to-next-to-leading order with hadron mass corrections and higher twist effects, which can explain both the established high-energy data and our measurements reasonably well.

Observation of +c.c

Authors

M Ablikim,MN Achasov,P Adlarson,O Afedulidis,XC Ai,R Aliberti,A Amoroso,Q An,Y Bai,O Bakina,I Balossino,Y Ban,H-R Bao,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,GR Che,C Chen,CH Chen,Chao Chen,G Chen,HS Chen,HY Chen,ML Chen,SJ Chen,SL Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,ZY Chen,SK Choi,X Chu,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,CQ Deng,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,MC Du,SX Du,YY Duan,ZH Duan,P Egorov,YH Fan,J Fang,SS Fang,WX Fang,Y Fang,YQ Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,YT Feng,M Fritsch,CD Fu,JL Fu,YW Fu,H Gao,XB Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,L Ge,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,ZL Guan,AQ Guo,LB Guo,MJ Guo,RP Guo,YP Guo,A Guskov,J Gutierrez,KL Han,TT Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,XT Hou,YR Hou,ZL Hou,BY Hu,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang

Journal

arXiv preprint arXiv:2401.08252

Published Date

2024/1/16

Using events collected with the BESIII detector at BEPCII, the decay of is observed for the first time. The branching fraction of this decay is measured to be $\mathcal{B}_{\psi(3686) \to \Omega^- K^+ \bar{\Xi}^0 +c.c.}=(2.78 \pm 0.40 \pm 0.18 ) \times 10^{-6}$, where the first uncertainty is statistical and the second is systematic. Possible baryon excited states are searched for in this decay, but no evident intermediate state is observed with the current sample size.

A New Look at the Scalar Meson via Decays

Authors

Medina Ablikim,Mikhail N Achasov,P Adlarson,XC Ai,Riccardo Aliberti,Antonio Amoroso,Yu Bai,Olga Bakina,Yong Ban,H-R Bao,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,GR Che,C Chen,CH Chen,Chao Chen,G Chen,HS Chen,HY Chen,ML Chen,SJ Chen,SL Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,SK Choi,X Chu,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,CQ Deng,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,MC Du,SX Du,YY Duan,ZH Duan,P Egorov,YH Fan,J Fang,SS Fang,WX Fang,Y Fang,YQ Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,YT Feng,M Fritsch,CD Fu,JL Fu,YW Fu,H Gao,XB Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,AQ Guo,LB Guo,MJ Guo,RP Guo,YP Guo,A Guskov,J Gutierrez,KL Han,TT Han,F Hanisch,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,XT Hou,YR Hou,ZL Hou,BY Hu,HM Hu,JF Hu,SL Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,YS Huang,T Hussain,N Hüsken,J Jackson

Journal

arXiv preprint arXiv:2401.13225

Published Date

2024/1/24

Using of collision data collected with the BESIII detector at the center-of-mass energy of 3.773 GeV, we investigate the semileptonic decays ( and ). The decay is observed for the first time. By analyzing simultaneously the differential decay rates of and in different four-momentum transfer intervals, the product of the relevant hadronic form factor and the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element is determined to be for the first time. With the input of from the global fit in the standard model, we determine . The absolute branching fractions of and are determined as and . Combining these results with those of previous BESIII measurements on their semielectronic counterparts from the same data sample, we test lepton flavor universality by measuring the branching fraction ratios and ${\mathcal B}_{D^+\to f_0(500) \mu^+\nu_\mu}/{\mathcal B}_{D^+\to f_0(500) e^+\nu_e}=1.14\pm0.28$, which are compatible with the standard model expectation.

Study of , , , , and

Authors

M Ablikim,MN Achasov,P Adlarson,O Afedulidis,XC Ai,R Aliberti,A Amoroso,Q An,Y Bai,O Bakina,I Balossino,Y Ban,H-R Bao,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,GR Che,C Chen,CH Chen,Chao Chen,G Chen,HS Chen,HY Chen,ML Chen,SJ Chen,SL Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,ZY Chen,SK Choi,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,CQ Deng,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,MC Du,SX Du,YY Duan,ZH Duan,P Egorov,YH Fan,J Fang,SS Fang,WX Fang,Y Fang,YQ Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,YT Feng,M Fritsch,CD Fu,JL Fu,YW Fu,H Gao,XB Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,L Ge,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,ZL Guan,AQ Guo,LB Guo,MJ Guo,RP Guo,YP Guo,A Guskov,J Gutierrez,KL Han,TT Han,F Hanisch,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,XT Hou,YR Hou,ZL Hou,BY Hu,HM Hu,JF Hu,SL Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang

Journal

Physical Review D

Published Date

2024/4/30

Based on (2712.4±14.1)× 10 6 ψ (3686) events collected with the BESIII detector, we study the decays h c→ 3 (π+ π−) π 0, h c→ 2 (π+ π−) ω, h c→ 2 (π+ π−) π 0 η, h c→ 2 (π+ π−) η, and h c→ p p via ψ (3686)→ π 0 h c. The decay channel h c→ 3 (π+ π−) π 0 is observed for the first time, and its branching fraction is determined to be (9.28±1.14±0.77)× 10− 3, where the first uncertainty is statistical and the second is systematic. In addition, first evidence is found for the modes h c→ 2 (π+ π−) π 0 η and h c→ 2 (π+ π−) ω with significances of 4.8 σ and 4.7 σ, and their branching fractions are determined to be (7.55±1.51±0.77)× 10− 3 and (4.00±0.86±0.35)× 10− 3, respectively. No significant signals of h c→ 2 (π+ π−) η and h c→ p p are observed, and the upper limits of the branching fractions of these decays are determined to be< 6.19× 10− 4 and< 4.40× 10− 5 at the 90% confidence level, respectively.

Improved measurements of the Dalitz decays

Authors

M Ablikim,MN Achasov,P Adlarson,O Afedulidis,XC Ai,R Aliberti,A Amoroso,Q An,Y Bai,O Bakina,I Balossino,Y Ban,H-R Bao,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,WL Chang,GR Che,C Chen,CH Chen,Chao Chen,G Chen,HS Chen,ML Chen,SJ Chen,SL Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,ZY Chen,SK Choi,X Chu,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,CQ Deng,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,MC Du,SX Du,ZH Duan,P Egorov,YH Fan,J Fang,SS Fang,WX Fang,Y Fang,YQ Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,YT Feng,K Fischer,M Fritsch,CD Fu,JL Fu,YW Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,ZL Guan,AQ Guo,LB Guo,MJ Guo,RP Guo,YP Guo,A Guskov,J Gutierrez,KL Han,TT Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,XT Hou,YR Hou,ZL Hou,BY Hu,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,T Hussain,F Hölzken

Journal

arXiv preprint arXiv:2401.09136

Published Date

2024/1/17

Based on a data sample of 10 billion events collected with the BESIII detector, improved measurements of the Dalitz decays are performed, where the and are produced through the radiative decays . The branching fractions of and are measured to be and , respectively. Within the single pole model, the parameter of electromagnetic transition form factor for is determined to be . Within the multi-pole model, we extract the electromagnetic transition form factors for to be and . The results are consistent with both theoretical predictions and previous measurements. The characteristic sizes of the interaction regions for the and are calculated to be and , respectively. In addition, we search for the dark photon in , and the upper limits of the branching fractions as a function of the dark photon are given at 90\% confidence level.

Improved measurement of the decays eta' iv plus iv- iv+ (0)iv - (0) and search for the rare decay eta' 4iv0

Authors

M Ablikim,MN Achasov,P Adlarson,XC Ai,R Aliberti,A Amoroso,MR An,Q An,Y Bai,O Bakina,I Balossino,Y Ban,HR Bao,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,TT Chang,WL Chang,GR Che,G Chelkov,C Chen,Chao Chen,G Chen,HS Chen,ML Chen,SJ Chen,SL Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,SK Choi,X Chu,G Cibinetto,SC Coen,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,MC Du,SX Du,ZH Duan,P Egorov,YH Fan,J Fang,SS Fang,WX Fang,Y Fang,YQ Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,K Fischer,M Fritsch,CD Fu,JL Fu,YW Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,ZL Guan,AQ Guo,LB Guo,MJ Guo,RP Guo,YP Guo,A Guskov,J Gutierrez,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FHH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,X Hou,YR Hou,ZL Hou,BY Hu,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,T Hussain,N Huesken

Journal

PHYSICAL REVIEW D

Published Date

2024/2/16

Using a sample of 10 billion J/psi events collected with the BESIII detector, the decays eta' -> pi())pi(-)pi())pi(-), eta' -> pi())pi(-)pi(0)pi(0 )and eta'-> 4 pi(0 )are studied via the process J/psi -> gamma eta'. The branching fractions of eta'->pi())pi(-)pi())pi(- )and eta'->pi())pi(-)pi(0)pi(0 )are measured to be(8.56 +/- 0.25(stat)+/- 0.23(syst))x10(-5 )and (2.12 +/- 0.12(stat)+/- 0.10(syst))x10(-4), respectively, which are consistent with previous measurements but with improved precision. No significant eta'-> 4 pi(0 )signal is observed, and the upper limit on the branching fraction of this decay is determined to be less than 1.24x10(-5 )at the 90% confidence level. In addition, an amplitude analysis of eta'->pi)pi-pi)pi-is performed to extract the doubly virtual isovector form factor alpha for the first time. The measured value of alpha = 1.22 +/- 0.33(stat) +/- 0.04(syst), is in agreement with the prediction of the vector meson dominance model.

arXiv : Modification of (3872) and (2) production in Pb collisions at TeV

Authors

Roel Aaij,Shinichi Okamura,Matthew John Bradley,Gregory Ciezarek,Maciej Wojciech Dudek,Paula Collins,Stanislav Luchuk,Nico Kleijne,Wenbin Qian,Ned Francis Howarth,Julio Novoa Fernandez,Jie Wu,Aodhan Tomas Burke,Tomasz Szumlak,Jennifer Clare Smallwood,Serena Maccolini,Andrzej Kupsc,Marcel Merk,Artem Okhotnikov,Paula Garcia Moreno,Alexander Bitadze,Domenico Galli,Zirui Wang,Lucio Anderlini,Pavel Krokovny,Gianfranco Morello,Andrea Merli,Ivan Polyakov,Carmen Giugliano,Pierfrancesco Cifra,Pei-Rong Li,Leonardo Santoro,Guillaume Pietrzyk,Paul Nathaniel Swallow,Giorgia Tonani,Leonid Kravchuk,Tatiana Ovsiannikova,Shuangli Yang,Menglin Xu,Cheuk Ping Wong,Francesca Swystun,Veronika Chobanova,Thomas Kirn,Gaya Benane,Yanxi Wu,Shulei Zhang,Luke George Scantlebury Smead,Niels Tuning,Bogdan Kutsenko,Sebastian Bachmann,Marie Bachmayer,Zhenzi Wang,Mindaugas Sarpis,Carina Trippl,Timothy Evans,Giovanni Punzi,Da Yu Tou,Davide Nicotra,Neville Harnew,Camilla De Angelis,Xiaofan Hu,Izabela Juszczak,Daniel James David Thompson,Stephan Escher,Fionn Caitlin Ros Bishop,Oleg Stenyakin,Marcin Chrzaszcz,Jonathan Edward Davies,Sune Jakobsen,Yuxi Gao,Marius Maehlum Halvorsen,Guido Haefeli,Sanqiang Qu,Christoph Langenbruch,Sergey Barsuk,Florin Maciuc,Alexander Davidson,Marcel Materok,Davide Pinci,Miriam Lucio Martinez,Chenjia Zhang,Alice Biolchini,Radoslav Marchevski,Sigrid Scherl,Yangheng Zheng,Alexandra Paige Rollings,Daria Strekalina,Giacomo Graziani,Nikolay Nikitin,Sara Elizabeth Mitchell,Yuki Fujii,Vladimir Chulikov,Louis Lenard Gerken,Mick Mulder,Michele Atzeni,Sascha Stahl,Giuliana Galati,Sebastian Neubert,Artur Ishteev,Christopher Jones,Alexandru Tudor Grecu,Robbert Erik Geertsema,Mikhail Zavertyaev,Eluned Smith,Gabriele Martelli,Tai-hua Lin,Manuel Guittiere,Anna Danilina,Valeriia Zhovkovska,Jascha Peter Grabowski,Jan-Marc Basels,Matthew Needham,Kunal Garg,Burkhard Schmidt,Christoph Hasse,Thomas Ackernley,Patrik Harri Adlarson,Erika De Lucia,Shuchong Ding,Ivan Belyaev,Edward Brendan Shields,Stefano Petrucci,Xueting Yang,Monica Pepe Altarelli,Anni Kauniskangas,Alexander Leon Gilman,Abolhassan Jawahery,Hengne Li,Bhagyashree Pagare,Claudia Bertella,Luis Miguel Garcia Martin,Alessandra Gioventù,Paul Andre Günther,Sophie Katharina Kretzschmar,Alvaro Gomes,Joshua Ethan Horswill,Matthew Kenzie,Holger Stevens,Desmond Mzamo Shangase,Daniele Passaro,Micol Olocco,Angelo Carbone,Olivier Deschamps,Baasansuren Batsukh,Alexey Boldyrev,Katharina Müller,Philipp Roloff,Josh Bex,Massimiliano Fiorini,Patrick Spradlin

Published Date

2024/2/22

The LHCb collaboration measures production of the exotic hadron χc1 (3872) in proton-nucleus collisions for the first time. Comparison with the charmonium state ψ (2S) suggests that the exotic χc1 (3872) experiences different dynamics in the nuclear medium than conventional hadrons, and comparison with data from protonproton collisions indicates that the presence of the nucleus may modify χc1 (3872) production rates. This is the first measurement of the nuclear modification factor of an exotic hadron.

Search for di-photon decays of an axion-like particle in radiative decays of J/psi

Authors

M Ablikim,MN Achasov,P Adlarson,O Afedulidis,XC Ai,R Aliberti,A Amoroso,MR An,Q An,Y Bai,O Bakina,I Balossino,Y Ban,H-R Bao,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,GR Che,C Chen,Chao Chen,G Chen,HS Chen,ML Chen,SJ Chen,SL Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,ZY Chen,SK Choi,G Cibinetto,SC Coen,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,MC Du,SX Du,ZH Duan,P Egorov,YH Fan,J Fang,SS Fang,WX Fang,Y Fang,YQ Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,YT Feng,K Fischer,M Fritsch,CD Fu,JL Fu,YW Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,L Ge,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,AQ Guo,LB Guo,MJ Guo,RP Guo,YP Guo,A Guskov,J Gutierrez,KL Han,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,XT Hou,YR Hou,ZL Hou,BY Hu,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,T Hussain,F Hölzken,N Hüsken

Journal

arXiv preprint arXiv:2404.04640

Published Date

2024/4/6

We search for the di-photon decay of a light pseudoscalar axion-like particle, , in radiative decays of the , using 10 billion events collected with the BESIII detector. We find no evidence of a narrow resonance and set upper limits at the confidence level on the product branching fraction and the axion-like particle photon coupling constant in the ranges of and GeV, respectively, for GeV/. These are the most stringent limits to date in this mass region.

Study of and from 4.66 to 4.95 GeV

Authors

M Ablikim,MN Achasov,P Adlarson,O Afedulidis,XC Ai,R Aliberti,A Amoroso,Q An,Y Bai,O Bakina,I Balossino,Y Ban,H-R Bao,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,GR Che,C Chen,CH Chen,Chao Chen,G Chen,HS Chen,HY Chen,ML Chen,SJ Chen,SL Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,ZY Chen,SK Choi,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,CQ Deng,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,MC Du,SX Du,YY Duan,ZH Duan,P Egorov,YH Fan,J Fang,SS Fang,WX Fang,Y Fang,YQ Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,YT Feng,M Fritsch,CD Fu,JL Fu,YW Fu,H Gao,XB Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,L Ge,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,AQ Guo,LB Guo,MJ Guo,RP Guo,YP Guo,A Guskov,J Gutierrez,KL Han,TT Han,F Hanisch,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,XT Hou,YR Hou,ZL Hou,BY Hu,HM Hu,JF Hu,SL Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang

Journal

arXiv preprint arXiv:2404.13840

Published Date

2024/4/22

Using data samples with an integrated luminosity of collected by the BESIII detector at center-of-mass energies ranging from 4.66 to 4.95 GeV, we study the processes of and . With the process, the branching fraction ratio is measured to be ( at 90\% confidence level). In addition, we measure the ratio of the average cross section of to to be $\sigma_{\omega X(3872)}/\sigma_{\omega\chi_{c1}}~(\sigma_{\omega X(3872)}/\sigma_{\omega\chi_{c2}})=5.2\pm1.0_\text{stat.}\pm1.9_\text{syst.}~ (5.5\pm1.1_\text{stat.}\pm2.4_\text{syst.})$. Finally, we search for the process of , and no obvious signal is observed. The upper limit on the ratio of the average cross section of to is set as at 90\% confidence level.

Determination of the number of events taken at BESIII

Authors

M Ablikim,MN Achasov,P Adlarson,O Afedulidis,XC Ai,R Aliberti,A Amoroso,Q An,Y Bai,O Bakina,I Balossino,Y Ban,H-R Bao,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,GR Che,C Chen,CH Chen,Chao Chen,G Chen,HS Chen,HY Chen,ML Chen,SJ Chen,SL Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,ZY Chen,SK Choi,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,CQ Deng,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,MC Du,SX Du,YY Duan,ZH Duan,P Egorov,YH Fan,J Fang,SS Fang,WX Fang,Y Fang,YQ Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,YT Feng,M Fritsch,CD Fu,JL Fu,YW Fu,H Gao,XB Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,L Ge,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,ZL Guan,AQ Guo,LB Guo,MJ Guo,RP Guo,YP Guo,A Guskov,J Gutierrez,KL Han,TT Han,F Hanisch,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,XT Hou,YR Hou,ZL Hou,BY Hu,HM Hu,JF Hu,SL Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang

Journal

arXiv preprint arXiv:2403.06766

Published Date

2024/3/11

The number of events collected by the BESIII detector during the 2021 run period is determined to be by counting inclusive hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of events collected during the 2009 and 2012 run periods are updated to be and , respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of events in the three data samples is .

Investigation of the Rule and Test of Symmetry through the Measurement of Decay Asymmetry Parameters in Decays

Authors

M Ablikim,MN Achasov,P Adlarson,XC Ai,R Aliberti,A Amoroso,MR An,Q An,Y Bai,O Bakina,I Balossino,Y Ban,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,TT Chang,WL Chang,GR Che,C Chen,Chao Chen,G Chen,HS Chen,ML Chen,SJ Chen,SL Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,WS Cheng,SK Choi,X Chu,G Cibinetto,SC Coen,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,MC Du,SX Du,ZH Duan,P Egorov,YH Fan,J Fang,SS Fang,WX Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,K Fischer,M Fritsch,CD Fu,JL Fu,YW Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,ZL Guan,AQ Guo,LB Guo,MJ Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FHH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,XT Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,T Hussain,N Hüsken,M Irshad,J Jackson,S Jaeger,S Janchiv,JH Jeong

Journal

Physical Review Letters

Published Date

2024/3/6

Using (10 087±44)× 10 6 J/ψ events collected with the BESIII detector, numerous Ξ− and Λ decay asymmetry parameters are simultaneously determined from the process J/ψ→ Ξ− Ξ+→ Λ (p π−) π− Λ (n π 0) π+ and its charge-conjugate channel. The precisions of α Λ 0 for Λ→ n π 0 and α Λ 0 for Λ→ n π 0 compared to world averages are improved by factors of 4 and 1.7, respectively. The ratio of decay asymmetry parameters of Λ→ n π 0 to that of Λ→ p π−,⟨ α Λ 0⟩/⟨ α Λ−⟩, is determined to be 0.873±0.01 2− 0.010+ 0.011, where the first and the second uncertainties are statistical and systematic, respectively. The ratio is smaller than unity more than 5 σ, which signifies the existence of the Δ I= 3/2 transition in Λ for the first time. Besides, we test for C P symmetry in Ξ−→ Λ π− and in Λ→ n π 0 with the best precision to date.

Measurement of the Born cross section for at center-of-mass energies between 4.1 and 4.6\,GeV

Authors

M Ablikim,MN Achasov,P Adlarson,O Afedulidis,XC Ai,R Aliberti,A Amoroso,Q An,Y Bai,O Bakina,I Balossino,Y Ban,H-R Bao,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,GR Che,C Chen,CH Chen,Chao Chen,G Chen,HS Chen,HY Chen,ML Chen,SJ Chen,SL Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,ZY Chen,SK Choi,G Cibinetto,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,CQ Deng,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,MC Du,SX Du,ZH Duan,P Egorov,YH Fan,J Fang,SS Fang,WX Fang,Y Fang,YQ Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,YT Feng,M Fritsch,CD Fu,JL Fu,YW Fu,H Gao,XB Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,L Ge,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,ZL Guan,AQ Guo,LB Guo,MJ Guo,RP Guo,YP Guo,A Guskov,J Gutierrez,KL Han,TT Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,XT Hou,YR Hou,ZL Hou,BY Hu,HM Hu,JF Hu,SL Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,T Hussain

Journal

arXiv preprint arXiv:2404.06718

Published Date

2024/4/10

We measure the Born cross section for the reaction from to ~GeV using data sets collected by the BESIII detector running at the BEPCII collider. A resonant structure in the cross section line shape near 4.200~GeV is observed with a statistical significance of 7. The parameters of this resonance are measured to be \MeasMass\ and \MeasWidth, where the first uncertainties are statistical and the second systematic.

Observation of , Precision Test of Lepton Flavor Universality with , and First Measurements of Decay Dynamics

Authors

M Ablikim,MN Achasov,P Adlarson,R Aliberti,A Amoroso,MR An,Q An,Y Bai,O Bakina,I Balossino,Y Ban,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,J Bloms,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,TT Chang,WL Chang,GR Che,C Chen,Chao Chen,G Chen,HS Chen,ML Chen,SJ Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,WS Cheng,SK Choi,X Chu,G Cibinetto,SC Coen,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,SX Du,ZH Duan,P Egorov,YL Fan,J Fang,SS Fang,WX Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,K Fischer,M Fritsch,C Fritzsch,CD Fu,YW Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,ZL Guan,AQ Guo,LB Guo,RP Guo,YP Guo,A Guskov,XT Hou,WY Han,XQ Hao,FA Harris,KK He,KL He,FH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,T Hussain,N Hüsken,W Imoehl,M Irshad,J Jackson,S Jaeger,S Janchiv,JH Jeong,Q Ji,QP Ji,XB Ji

Journal

Physical Review Letters

Published Date

2024/2/28

By analyzing 7.33 fb− 1 of e+ e− annihilation data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we report the observation of the semileptonic decay D s+→ η′ μ+ ν μ, with a statistical significance larger than 10 σ, and the measurements of the D s+→ η μ+ ν μ and D s+→ η′ μ+ ν μ decay dynamics for the first time. The branching fractions of D s+→ η μ+ ν μ and D s+→ η′ μ+ ν μ are determined to be (2.235±0.05 1 stat±0.05 2 syst)% and (0.801±0.05 5 stat±0.02 8 syst)%, respectively, with precision improved by factors of 6.0 and 6.6 compared to the previous best measurements. Combined with the results for the decays D s+→ η e+ ν e and D s+→ η′ e+ ν e, the ratios of the decay widths are examined both inclusively and in several ℓ+ ν ℓ four-momentum transfer ranges. No evidence for lepton flavor universality violation is found within the current statistics. The products …

Observation of the Anomalous Shape of X (1840) in J/ψ→ γ3 (π^{+} π^{-}) Indicating a Second Resonance Near pp [over¯] Threshold

Authors

M Ablikim,MN Achasov,P Adlarson,XC Ai,R Aliberti,A Amoroso,MR An,Q An,Y Bai,O Bakina,I Balossino,Y Ban,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,TT Chang,WL Chang,GR Che,C Chen,Chao Chen,G Chen,HS Chen,ML Chen,SJ Chen,SL Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,WS Cheng,SK Choi,X Chu,G Cibinetto,SC Coen,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,MC Du,SX Du,ZH Duan,P Egorov,YH Fan,YL Fan,J Fang,SS Fang,WX Fang,Y Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,K Fischer,M Fritsch,C Fritzsch,CD Fu,JL Fu,YW Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,ZL Guan,AQ Guo,LB Guo,MJ Guo,RP Guo,YP Guo,A Guskov,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FHH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,XT Hou,YR Hou,ZL Hou,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,T Hussain,N Hüsken,W Imoehl,N In der Wiesche,J Jackson

Journal

Physical review letters

Published Date

2024/4/12

Using a sample of (10087±44)×10^{6} J/ψ events, which is about 45 times larger than that was previously analyzed, a further investigation on the J/ψ→γ3(π^{+}π^{-}) decay is performed. A significant distortion at 1.84 GeV/c^{2} in the line shape of the 3(π^{+}π^{-}) invariant mass spectrum is observed for the first time, which could be resolved by two overlapping resonant structures, X(1840) and X(1880). The new state X(1880) is observed with a statistical significance larger than 10σ. The mass and width of X(1880) are determined to be 1882.1±1.7±0.7 MeV/c^{2} and 30.7±5.5±2.4 MeV, respectively, which indicates the existence of a pp[over ¯] bound state.

Observation of Significant Flavor-SU(3) Breaking in the Kaon Wave Function at and Discovery of the Charmless Decay

Authors

M Ablikim,MN Achasov,P Adlarson,XC Ai,R Aliberti,A Amoroso,MR An,Q An,Y Bai,O Bakina,I Balossino,Y Ban,H-R Bao,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,TT Chang,WL Chang,GR Che,C Chen,Chao Chen,G Chen,HS Chen,ML Chen,SJ Chen,SL Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,SK Choi,X Chu,G Cibinetto,SC Coen,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,MC Du,SX Du,ZH Duan,P Egorov,YH Fan,J Fang,SS Fang,WX Fang,Y Fang,YQ Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,K Fischer,M Fritsch,CD Fu,JL Fu,YW Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,ZL Guan,AQ Guo,LB Guo,MJ Guo,RP Guo,YP Guo,A Guskov,J Gutierrez,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FHH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,XT Hou,YR Hou,ZL Hou,BY Hu,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,T Hussain,N Hüsken,M Irshad,J Jackson

Journal

arXiv preprint arXiv:2312.10962

Published Date

2023/12/18

We present cross sections for the reaction at center-of-mass energies ranging from 3.51 GeV to 4.95 GeV using data samples collected in the BESIII experiment, corresponding to a total integrated luminosity of 26.5 fb. The ratio of neutral-to-charged kaon form factors at large momentum transfers () is determined to be , which indicates a small but significant effect of flavor-SU(3) breaking in the kaon wave function, and consequently excludes the possibility that flavor-SU(3) breaking is the primary reason for the strong experimental violation of the pQCD prediction , where and are the form factors, and and are the decay constants of charged pions and kaons, respectively. We also observe a significant signal for the charmless decay for the first time. Within a contour of the likelihood value, the the branching fraction for is determined to be , and the relative phase between the continuum and amplitudes is . The branching fraction is in good agreement with the - and -wave charmonia mixing scheme proposed in the interpretation of the " puzzle" between and decays.

Observation of in the Amplitude Analysis of

Authors

M Ablikim,MN Achasov,P Adlarson,XC Ai,R Aliberti,A Amoroso,MR An,Q An,Y Bai,O Bakina,I Balossino,Y Ban,H-R Bao,V Batozskaya,K Begzsuren,N Berger,M Berlowski,M Bertani,D Bettoni,F Bianchi,E Bianco,A Bortone,I Boyko,RA Briere,A Brueggemann,H Cai,X Cai,A Calcaterra,GF Cao,N Cao,SA Cetin,JF Chang,TT Chang,WL Chang,GR Che,Chao Chen,Chao Chen,G Chen,HS Chen,ML Chen,SJ Chen,SL Chen,SM Chen,T Chen,XR Chen,XT Chen,YB Chen,YQ Chen,ZJ Chen,SK Choi,X Chu,G Cibinetto,SC Coen,F Cossio,JJ Cui,HL Dai,JP Dai,A Dbeyssi,RE de Boer,D Dedovich,ZY Deng,A Denig,I Denysenko,M Destefanis,F De Mori,B Ding,XX Ding,Y Ding,J Dong,LY Dong,MY Dong,X Dong,MC Du,SX Du,ZH Duan,P Egorov,YH Fan,J Fang,SS Fang,WX Fang,Y Fang,YQ Fang,R Farinelli,L Fava,F Feldbauer,G Felici,CQ Feng,JH Feng,YT Feng,K Fischer,M Fritsch,CD Fu,JL Fu,YW Fu,H Gao,YN Gao,Yang Gao,S Garbolino,I Garzia,PT Ge,ZW Ge,C Geng,EM Gersabeck,A Gilman,K Goetzen,L Gong,WX Gong,W Gradl,S Gramigna,M Greco,MH Gu,YT Gu,CY Guan,ZL Guan,AQ Guo,LB Guo,MJ Guo,RP Guo,YP Guo,A Guskov,J Gutierrez,TT Han,WY Han,XQ Hao,FA Harris,KK He,KL He,FHH Heinsius,CH Heinz,YK Heng,C Herold,T Holtmann,PC Hong,GY Hou,XT Hou,YR Hou,ZL Hou,BY Hu,HM Hu,JF Hu,T Hu,Y Hu,GS Huang,KX Huang,LQ Huang,XT Huang,YP Huang,T Hussain,N Hüsken,M Irshad

Journal

Physical Review Letters

Published Date

2024/3/29

We perform for the first time an amplitude analysis of the decay D+→ K S 0 π+ η and report the observation of the decay D+→ K S 0 a 0 (980)+ using 2.93 fb− 1 of e+ e− collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector. As the only W-annihilation-free decay among D to a 0 (980) pseudoscalar, D+→ K S 0 a 0 (980)+ is the ideal decay in extracting the contributions of the W-emission amplitudes involving a 0 (980) and to study the final-state interactions. The absolute branching fraction of D+→ K S 0 π+ η is measured to be (1.27±0.0 4 stat±0.0 3 syst)%. The branching fractions of intermediate processes D+→ K S 0 a 0 (980)+ with a 0 (980)+→ π+ η and D+→ π+ K 0*(1430) 0 with K 0*(1430) 0→ K S 0 η are measured to be (1.33±0.0 5 stat±0.0 4 syst)% and (0.14±0.0 3 stat±0.0 1 syst)%, respectively.

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