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- Disentangling the spin-parity of a resonance via the gold-plated decay mode 认领 引用
- 1
- 作者 Tanmoy Modak Dibyakrupa Sahoo +2 位作者 Rahul Sinha Hai-Yang Cheng Tzu-Chiang Yuan 《Chinese Physics C》 SCIE EI CAS CSCD 2016年第3期12-28,共17页
- Searching for new resonances and finding out their properties is an essential part of any existing or future particle physics experiment. The nature of a new resonance is characterized by its spin, charge conjugation,... Searching for new resonances and finding out their properties is an essential part of any existing or future particle physics experiment. The nature of a new resonance is characterized by its spin, charge conjugation,parity, and its couplings with the existing particles of the Standard Model. If a new resonance is found in the four lepton final state produced via two intermediate Z bosons, the resonance could be a new heavy scalar or a Z boson or even a higher spin particle. In such cases a step by step methodology as enunciated in this paper can be followed to determine the spin, parity and the coupling to two Z bosons of the parent particles, in a fully model-independent way. In our approach we show how three uni-angular distributions and a few experimentally measurable observables can conclusively tell us about the spin, parity as well as the couplings of the new resonance to two Z bosons. We have performed a numerical analysis to validate our approach and showed how the uni-angular observables can be used to disentangle the spin parity as well as the coupling of the resonance. 展开更多
- 关键词 general spin-parity analysis angular distributions angular asymmetries
- Effects of Arbitrarily Directed Field on Spin Phase Oscillations in Biaxial Molecular Magnets 认领 引用
- 2
- 作者 HUHui ZHUJia－Lin 《Communications in Theoretical Physics》 SCIE CAS 2001年第6期751-758,共8页
- Quantum phase interference and spin-parity effects are studied in biaxial molecular magnets in a magnetic field at an arbitrarily directed angle. The calculations of the ground-state tunnel splitting are performed on ... Quantum phase interference and spin-parity effects are studied in biaxial molecular magnets in a magnetic field at an arbitrarily directed angle. The calculations of the ground-state tunnel splitting are performed on the basis of the instanton technique in the spin-coherent-state path-integral representation, and complemented by exactly numerical diagonalization. Both the Wentzel–Kramers–Brillouin exponent and the pre-exponential factor are obtained for the entire region of the direction of the field. Our results show that the tunnel splitting oscillates with the field for the small field angle, while for the large field angle the oscillation is completely suppressed. This distinct angular dependence, together with the dependence of the tunnel splitting on the field strength, provides an independent test for spin-parity effects in biaxial molecular magnets. The analytical results for the molecular magnet are found to be in good agreement with the numerical simulations, which suggests that even the molecular magnet with total spin is large enough to be treated as a giant spin system. 展开更多
- 关键词 macroscopic quantum coherence molecular meliculare magnets spin-parity effects Fe-8
- Observation of e^+e^-→D_s^+■(*0)K^- and study of the P-wave D_s mesons 认领 引用
- 3
- 作者 M.Ablikim M.N.Achasov +446 位作者 S.Ahmed M.Albrecht M.Alekseev A.Amoroso F.F.An Q.An Y.Bai O.Bakina R.Baldini Ferroli Y.Ban K.Begzsuren D.W.Bennett J.V.Bennett N.Berger M.Bertani D.Bettoni F.Bianchi I.Boyko R.A.Briere H.Cai X.Cai A.Calcaterra G.F.Cao S.A.Cetin J.Chai J.F.Chang W.L.Chang G.Chelkov G.Chen H.S.Chen J.C.Chen M.L.Chen S.J.Chen Y.B.Chen W.S.Cheng G.Cibinetto F.Cossio H.L.Dai J.P.Dai A.Dbeyssi D.Dedovich Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori Y.Ding C.Dong J.Dong L.Y.Dong M.Y.Dong Z.L.Dou S.X.Du J.Z.Fan J.Fang S.S.Fang Y.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng M.Fritsch C.D.Fu Y.Fu Q.Gao X.L.Gao Y.N.Gao Y.G.Gao Z.Gao B.Garillon I.Garzia A.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl M.Greco L.M.Gu M.H.Gu S.Gu Y.T.Gu A.Q.Guo L.B.Guo R.P.Guo Y.P.Guo A.Guskov Z.Haddadi S.Han X.Q.Hao F.A.Harris K.L.He F.H.Heinsius T.Held Y.K.Heng Z.L.Hou H.M.Hu J.F.Hu T.Hu Y.Hu G.S.Huang J.S.Huang X.T.Huang X.Z.Huang Z.L.Huang N.Huesken T.Hussain W.Ikegami Andersson W.Imoehl M.Irshad Q.Ji Q.P.Ji X.B.Ji X.L.Ji H.L.Jiang X.S.Jiang X.Y.Jiang J.B.Jiao Z.Jiao D.P.Jin S.Jin Y.Jin T.Johansson N.Kalantar-Nayestanaki X.S.Kang M.Kavatsyuk B.C.Ke I.K.Keshk T.Khan A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.Kurth W.Kühn J.S.Lange P.Larin L.Lavezzi H.Leithoff C.Li Cheng Li D.M.Li F.Li F.Y.Li G.Li H.B.Li H.J.Li J.C.Li J.W.Li Ke Li L.K.Li Lei Li P.L.Li P.R.Li Q.Y.Li W.D.Li W.G.Li X.L.Li X.N.Li X.Q.Li Z.B.Li H.Liang Y.F.Liang Y.T.Liang G.R.Liao L.Z.Liao J.Libby C.X.Lin D.X.Lin B.Liu B.J.Liu C.X.Liu D.Liu D.Y.Liu F.H.Liu Fang Liu Feng Liu H.B.Liu H.L Liu H.M.Liu Huanhuan Liu Huihui Liu J.B.Liu J.Y.Liu K.Y.Liu Kai Liu Ke Liu Q.Liu S.B.Liu X.Liu Y.B.Liu Z.A.Liu Zhiqing Liu Y.F.Long X.C.Lou H.J.Lu J.D.Lu J.G.Lu Y.Lu Y.P.Lu C.L.Luo M.X.Luo P.W.Luo T.Luo X.L.Luo S.Lusso X.R.Lyu F.C.Ma H.L.Ma L.L.Ma M.M.Ma Q.M.Ma X.N.Ma X.X.Ma X.Y.Ma Y.M.Ma F.E.Maas M.Maggiora S.Maldaner Q.A.Malik A.Mangoni Y.J.Mao Z.P.Mao S.Marcello Z.X.Meng J.G.Messchendorp G.Mezzadri J.Min T.J.Min R.E.Mitchell X.H.Mo Y.J.Mo C.Morales Morales N.Yu.Muchnoi H.Muramatsu A.Mustafa S.Nakhoul Y.Nefedov F.Nerling I.B.Nikolaev Z.Ning S.Nisar S.L.Niu S.L.Olsen Q.Ouyang S.Pacetti Y.Pan M.Papenbrock P.Patteri M.Pelizaeus H.P.Peng K.Peters J.Pettersson J.L.Ping R.G.Ping A.Pitka R.Poling V.Prasad M.Qi T.Y.Qi S.Qian C.F.Qiao N.Qin X.S.Qin Z.H.Qin J.F.Qiu S.Q.Qu K.H.Rashid C.F.Redmer M.Richter M.RipkaA.Rivetti M.Rolo G.Rong Ch.Rosner M.Rump A.Sarantsev M.Savrié K.Schoenning W.Shan X.Y.Shan M.Shao C.P.Shen P.X.Shen X.Y.Shen H.Y.Sheng X.Shi J.J.Song X.Y.Song S.Sosio C.Sowa S.Spataro F.F.Sui G.X.Sun J.F.Sun L.Sun S.S.Sun X.H.Sun Y.J.Sun Y.K Sun Y.Z.Sun Z.J.Sun Z.T.Sun Y.T Tan C.J.Tang G.Y.Tang X.Tang M.Tiemens B.Tsednee I.Uman B.Wang B.L.Wang C.W.Wang D.Y.Wang H.H.Wang K.Wang L.L.Wang L.S.Wang M.Wang Meng Wang P.Wang P.L.Wang R.M.Wang W.P.Wang X.F.Wang Y.Wang Y.F.Wang Z.Wang Z.G.Wang Z.Y.Wang Zongyuan Wang T.Weber D.H.Wei P.Weidenkaff S.P.Wen U.Wiedner M.Wolke L.H.Wu L.J.Wu Z.Wu L.Xia Y.Xia Y.J.Xiao Z.J.Xiao Y.G.Xie Y.H.Xie X.A.Xiong Q.L.Xiu G.F.Xu L.Xu Q.J.Xu W.Xu X.P.Xu F.Yan L.Yan W.B.Yan W.C.Yan Y.H.Yan H.J.Yang H.X.Yang L.Yang R.X.Yang S.L.Yang Y.H.Yang Y.X.Yang Yifan Yang Z.Q.Yang M.Ye M.H.Ye J.H.Yin Z.Y.You B.X.Yu C.X.Yu J.S.Yu C.Z.Yuan Y.Yuan A.Yuncu A.A.Zafar Y.Zeng B.X.Zhang B.Y.Zhang C.C.Zhang D.H.Zhang H.H.Zhang H.Y.Zhang J.Zhang J.L.Zhang J.Q.Zhang J.W.Zhang J.Y.Zhang J.Z.Zhang K.Zhang L.Zhang S.F.Zhang T.J.Zhang X.Y.Zhang Y.Zhang Y.H.Zhang Y.T.Zhang Yang Zhang Yao Zhang Yu Zhang Z.H.Zhang Z.P.Zhang Z.Y.Zhang G.Zhao J.W.Zhao J.Y.Zhao J.Z.Zhao Lei Zhao Ling Zhao M.G.Zhao Q.Zhao S.J.Zhao T.C.Zhao Y.B.Zhao Z.G.Zhao A.Zhemchugov B.Zheng J.P.Zheng Y.H.Zheng B.Zhong L.Zhou Q.Zhou X.Zhou X.K.Zhou X.R.Zhou Xiaoyu Zhou Xu Zhou A.N.Zhu J.Zhu J.Zhu K.Zhu K.J.Zhu S.H.Zhu X.L.Zhu Y.C.Zhu Y.S.Zhu Z.A.Zhu J.Zhuang B.S.Zou J.H.Zou 《Chinese Physics C》 SCIE CAS CSCD 2019年第3期5-16,共12页
- Studies of e^+e~→D_s^+■(*0)K^-and the P-wave charmed-strange mesons are performed based on an e^+e^-collision data sample corresponding to an integrated luminosity of 567 pb-1 collected with the BESIII detecto... Studies of e^+e~→D_s^+■(*0)K^-and the P-wave charmed-strange mesons are performed based on an e^+e^-collision data sample corresponding to an integrated luminosity of 567 pb-1 collected with the BESIII detector at s1/2=4.600 GeV. The processes of e^+e^-→D_s^+■*0K^- and D_s^+■~0K^- are observed for the first time and are found to be dominated by the modes D_s^+Ds1(2536)^-and D_s^+Ds2~*(2573)^-, respectively. The Born cross sections are measured to be σ~B(e^+e^-→D_s^+■*0K^-) =(10.1±2.3±0.8) pb and σ~B(e^+e^-→D_s^+■~0K^-) =(19.4±2.3± 1.6) pb, and the products of Born cross section and the decay branching fraction are measured to be σ~B(e^+e^-→D_s^+Ds1(2536)^-+c.c.)·B(Ds1(2536)^-→■*0K^-)=(7.5±1.8±0.7) pb and σ~B(e^+e^-→D_s^+Ds2~*(2573)^-+ c.c.)·B(Ds2~*(2573)^-→■~0 K^-)=(19.7 ± 2.9 ±2.0) pb. For the Ds1(2536)^-and Ds2~*(2573)^-mesons, the masses and widths are measured to be M(Ds1(2536)^-)=(2537.7±0.5 ±3.1) MeV/c2, Γ(Ds1(2536)^-) =(1.7 ±1.2 ±0.6)MeV, and M(Ds2~*(2573)^-)=(2570.7±2.0 ±1.7) MeV/c^2, Γ(Ds2~*(2573)^-)=(17.2 ±3.6 ±1.1) MeV. The spin-parity of the Ds2~*(2573)^-meson is determined to be J^p= 2^+. In addition, the processes e^+e^-→D_s^+■(*0)K^-are searched for using the data samples taken at four(two) center-of-mass energies between 4.416(4.527) and 4.575 GeV, and upper limits at the 90% confidence level on the cross sections are determined. 展开更多
- 关键词 cross section P-wave D_s mesons resonance parameters spin-parity BESIII
- 题名Disentangling the spin-parity of a resonance via the gold-plated decay mode 认领 引用
- 1
- 作者 Tanmoy Modak Dibyakrupa Sahoo Rahul Sinha Hai-Yang Cheng Tzu-Chiang Yuan
- 机构 The Institute of Mathematical Sciences,Taramani Institute of Physics,Academia Sinica
- 出处 《Chinese Physics C》 SCIE EI CAS CSCD 2016年第3期12-28,共17页
- 基金 Supported in part by MOST(Taiwan)(103-2112-M-001-005(HYC),101-2112-M-001-005-MY3(TCY))
- 摘要 Searching for new resonances and finding out their properties is an essential part of any existing or future particle physics experiment. The nature of a new resonance is characterized by its spin, charge conjugation,parity, and its couplings with the existing particles of the Standard Model. If a new resonance is found in the four lepton final state produced via two intermediate Z bosons, the resonance could be a new heavy scalar or a Z boson or even a higher spin particle. In such cases a step by step methodology as enunciated in this paper can be followed to determine the spin, parity and the coupling to two Z bosons of the parent particles, in a fully model-independent way. In our approach we show how three uni-angular distributions and a few experimentally measurable observables can conclusively tell us about the spin, parity as well as the couplings of the new resonance to two Z bosons. We have performed a numerical analysis to validate our approach and showed how the uni-angular observables can be used to disentangle the spin parity as well as the coupling of the resonance.
- 关键词 general spin-parity analysis angular distributions angular asymmetries
- Keywords general spin-parity analysis angular distributions angular asymmetries
- 分类号 O572.2 [理学—粒子物理与原子核物理]
- 题名Effects of Arbitrarily Directed Field on Spin Phase Oscillations in Biaxial Molecular Magnets 认领 引用
- 2
- 作者 HUHui ZHUJia－Lin
- 机构 DepartmentofPhysics,TsinghuaUniversity DepartmentofPhysics,TsinghuaUniversity
- 出处 《Communications in Theoretical Physics》 SCIE CAS 2001年第6期751-758,共8页
- 基金 国家自然科学基金，国家重点基础研究发展计划(973计划)
- 摘要 Quantum phase interference and spin-parity effects are studied in biaxial molecular magnets in a magnetic field at an arbitrarily directed angle. The calculations of the ground-state tunnel splitting are performed on the basis of the instanton technique in the spin-coherent-state path-integral representation, and complemented by exactly numerical diagonalization. Both the Wentzel–Kramers–Brillouin exponent and the pre-exponential factor are obtained for the entire region of the direction of the field. Our results show that the tunnel splitting oscillates with the field for the small field angle, while for the large field angle the oscillation is completely suppressed. This distinct angular dependence, together with the dependence of the tunnel splitting on the field strength, provides an independent test for spin-parity effects in biaxial molecular magnets. The analytical results for the molecular magnet are found to be in good agreement with the numerical simulations, which suggests that even the molecular magnet with total spin is large enough to be treated as a giant spin system.
- 关键词 macroscopic quantum coherence molecular meliculare magnets spin-parity effects Fe-8
- 分类号 O469 [理学—凝聚态物理]
- 题名Observation of e^+e^-→D_s^+■(*0)K^- and study of the P-wave D_s mesons 认领 引用
- 3
- 作者 M.Ablikim M.N.Achasov S.Ahmed M.Albrecht M.Alekseev A.Amoroso F.F.An Q.An Y.Bai O.Bakina R.Baldini Ferroli Y.Ban K.Begzsuren D.W.Bennett J.V.Bennett N.Berger M.Bertani D.Bettoni F.Bianchi I.Boyko R.A.Briere H.Cai X.Cai A.Calcaterra G.F.Cao S.A.Cetin J.Chai J.F.Chang W.L.Chang G.Chelkov G.Chen H.S.Chen J.C.Chen M.L.Chen S.J.Chen Y.B.Chen W.S.Cheng G.Cibinetto F.Cossio H.L.Dai J.P.Dai A.Dbeyssi D.Dedovich Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori Y.Ding C.Dong J.Dong L.Y.Dong M.Y.Dong Z.L.Dou S.X.Du J.Z.Fan J.Fang S.S.Fang Y.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng M.Fritsch C.D.Fu Y.Fu Q.Gao X.L.Gao Y.N.Gao Y.G.Gao Z.Gao B.Garillon I.Garzia A.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl M.Greco L.M.Gu M.H.Gu S.Gu Y.T.Gu A.Q.Guo L.B.Guo R.P.Guo Y.P.Guo A.Guskov Z.Haddadi S.Han X.Q.Hao F.A.Harris K.L.He F.H.Heinsius T.Held Y.K.Heng Z.L.Hou H.M.Hu J.F.Hu T.Hu Y.Hu G.S.Huang J.S.Huang X.T.Huang X.Z.Huang Z.L.Huang N.Huesken T.Hussain W.Ikegami Andersson W.Imoehl M.Irshad Q.Ji Q.P.Ji X.B.Ji X.L.Ji H.L.Jiang X.S.Jiang X.Y.Jiang J.B.Jiao Z.Jiao D.P.Jin S.Jin Y.Jin T.Johansson N.Kalantar-Nayestanaki X.S.Kang M.Kavatsyuk B.C.Ke I.K.Keshk T.Khan A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.Kurth W.Kühn J.S.Lange P.Larin L.Lavezzi H.Leithoff C.Li Cheng Li D.M.Li F.Li F.Y.Li G.Li H.B.Li H.J.Li J.C.Li J.W.Li Ke Li L.K.Li Lei Li P.L.Li P.R.Li Q.Y.Li W.D.Li W.G.Li X.L.Li X.N.Li X.Q.Li Z.B.Li H.Liang Y.F.Liang Y.T.Liang G.R.Liao L.Z.Liao J.Libby C.X.Lin D.X.Lin B.Liu B.J.Liu C.X.Liu D.Liu D.Y.Liu F.H.Liu Fang Liu Feng Liu H.B.Liu H.L Liu H.M.Liu Huanhuan Liu Huihui Liu J.B.Liu J.Y.Liu K.Y.Liu Kai Liu Ke Liu Q.Liu S.B.Liu X.Liu Y.B.Liu Z.A.Liu Zhiqing Liu Y.F.Long X.C.Lou H.J.Lu J.D.Lu J.G.Lu Y.Lu Y.P.Lu C.L.Luo M.X.Luo P.W.Luo T.Luo X.L.Luo S.Lusso X.R.Lyu F.C.Ma H.L.Ma L.L.Ma M.M.Ma Q.M.Ma X.N.Ma X.X.Ma X.Y.Ma Y.M.Ma F.E.Maas M.Maggiora S.Maldaner Q.A.Malik A.Mangoni Y.J.Mao Z.P.Mao S.Marcello Z.X.Meng J.G.Messchendorp G.Mezzadri J.Min T.J.Min R.E.Mitchell X.H.Mo Y.J.Mo C.Morales Morales N.Yu.Muchnoi H.Muramatsu A.Mustafa S.Nakhoul Y.Nefedov F.Nerling I.B.Nikolaev Z.Ning S.Nisar S.L.Niu S.L.Olsen Q.Ouyang S.Pacetti Y.Pan M.Papenbrock P.Patteri M.Pelizaeus H.P.Peng K.Peters J.Pettersson J.L.Ping R.G.Ping A.Pitka R.Poling V.Prasad M.Qi T.Y.Qi S.Qian C.F.Qiao N.Qin X.S.Qin Z.H.Qin J.F.Qiu S.Q.Qu K.H.Rashid C.F.Redmer M.Richter M.RipkaA.Rivetti M.Rolo G.Rong Ch.Rosner M.Rump A.Sarantsev M.Savrié K.Schoenning W.Shan X.Y.Shan M.Shao C.P.Shen P.X.Shen X.Y.Shen H.Y.Sheng X.Shi J.J.Song X.Y.Song S.Sosio C.Sowa S.Spataro F.F.Sui G.X.Sun J.F.Sun L.Sun S.S.Sun X.H.Sun Y.J.Sun Y.K Sun Y.Z.Sun Z.J.Sun Z.T.Sun Y.T Tan C.J.Tang G.Y.Tang X.Tang M.Tiemens B.Tsednee I.Uman B.Wang B.L.Wang C.W.Wang D.Y.Wang H.H.Wang K.Wang L.L.Wang L.S.Wang M.Wang Meng Wang P.Wang P.L.Wang R.M.Wang W.P.Wang X.F.Wang Y.Wang Y.F.Wang Z.Wang Z.G.Wang Z.Y.Wang Zongyuan Wang T.Weber D.H.Wei P.Weidenkaff S.P.Wen U.Wiedner M.Wolke L.H.Wu L.J.Wu Z.Wu L.Xia Y.Xia Y.J.Xiao Z.J.Xiao Y.G.Xie Y.H.Xie X.A.Xiong Q.L.Xiu G.F.Xu L.Xu Q.J.Xu W.Xu X.P.Xu F.Yan L.Yan W.B.Yan W.C.Yan Y.H.Yan H.J.Yang H.X.Yang L.Yang R.X.Yang S.L.Yang Y.H.Yang Y.X.Yang Yifan Yang Z.Q.Yang M.Ye M.H.Ye J.H.Yin Z.Y.You B.X.Yu C.X.Yu J.S.Yu C.Z.Yuan Y.Yuan A.Yuncu A.A.Zafar Y.Zeng B.X.Zhang B.Y.Zhang C.C.Zhang D.H.Zhang H.H.Zhang H.Y.Zhang J.Zhang J.L.Zhang J.Q.Zhang J.W.Zhang J.Y.Zhang J.Z.Zhang K.Zhang L.Zhang S.F.Zhang T.J.Zhang X.Y.Zhang Y.Zhang Y.H.Zhang Y.T.Zhang Yang Zhang Yao Zhang Yu Zhang Z.H.Zhang Z.P.Zhang Z.Y.Zhang G.Zhao J.W.Zhao J.Y.Zhao J.Z.Zhao Lei Zhao Ling Zhao M.G.Zhao Q.Zhao S.J.Zhao T.C.Zhao Y.B.Zhao Z.G.Zhao A.Zhemchugov B.Zheng J.P.Zheng Y.H.Zheng B.Zhong L.Zhou Q.Zhou X.Zhou X.K.Zhou X.R.Zhou Xiaoyu Zhou Xu Zhou A.N.Zhu J.Zhu J.Zhu K.Zhu K.J.Zhu S.H.Zhu X.L.Zhu Y.C.Zhu Y.S.Zhu Z.A.Zhu J.Zhuang B.S.Zou J.H.Zou
- 机构 Institute of High Energy Physics Beihang University Beijing Institute of Petrochemical Technology Bochum Ruhr-University,D-44780 Bochum Carnegie Mellon University,Pittsburgh Central China Normal University China Center of Advanced Science and Technology COMSATS University Islamabad,Lahore Campus,Defence Road,Off Raiwind Road,54000 Lahore Fudan University G.I.Budker Institute of Nuclear Physics SB RAS（BINP） GSI Helmholtzcentre for Heavy Ion Research GmbH,D-64291 Darmstadt Guangxi Normal University Guangxi University Hangzhou Normal University Helmholtz Institute Mainz,Johann-Joachim-Becher-Weg 45,D-55099 Mainz Henan Normal University Henan University of Science and Technology Huangshan College Hunan Normal University Hunan University Indian Institute of Technology Madras Indiana University,Bloomington INFN Laboratori Nazionali di Frascati,Frascati INFN Sezione di Ferrara,Ferrara Institute of Physics and Technology Johannes Gutenberg University of Mainz,Johann-Joachim-Becher-Weg 45,D-55099 Mainz Joint Institute for Nuclear Research,141980 Dubna,Moscow region Justus-Liebig-Universitaet Giessen,II.Physikalisches Institut,Heinrich-Buff-Ring 16,D-35392 Giessen KVI-CART,University of Groningen,NL-9747 AA Groningen Lanzhou University Liaoning University Nanjing Normal University Nanjing University Nankai University Peking University Shandong University Shanghai Jiao Tong University Shanxi University Sichuan University Soochow University Southeast University State Key Laboratory of Particle Detection and Electronics Sun Yat-Sen University Tsinghua University Istanbul Bilgi University,34060 Eyup,Istanbul University of Chinese Academy of Sciences University of Hawaii,Honolulu University of Jinan University of Minnesota,Minneapolis University of Muenster,Wilhelm-Klemm-Str.9,48149 Muenster University of Science and Technology Liaoning University of Science and Technology of China University of South China University of the Punjab University of Turin Uppsala University,SE-75120 Uppsala Wuhan University Xinyang Normal University Zhejiang University Zhengzhou University Bogazici University,34342 Istanbul the Moscow Institute of Physics and Technology the Functional Electronics Laboratory,Tomsk State University the Novosibirsk State University,Novosibirsk the NRC"Kurchatov Institute",Gatchina Istanbul Arel University,34295 Istanbul Goethe University Frankfurt,60323 Frankfurt am Main Key Laboratory for Particle Physics,Astrophysics and Cosmology,Ministry of Education,Shanghai Key Laboratory for Particle Physics and Cosmology,Institute of Nuclear and Particle Physics Government College Women University,Sialkot-51310.Punjab Key Laboratory of Nuclear Physics and Ion-beam Application（MOE）and Institute of Modern Physics,Fudan University Harvard University,Department of Physics,Cambridge INFN and University of Perugia,Perugia University of Ferrara,Ferrara Near East University,Nicosia,North Cyprus,Mersin 10 University of Eastern Piedmont,Alessandria INFN
- 出处 《Chinese Physics C》 SCIE CAS CSCD 2019年第3期5-16,共12页
- 基金 Supported in part by National Key Basic Research Program of China(2015CB856700) National Natural Science Foundation of China(NSFC)(11335008,11425524,11625523,11635010,11735014) +9 种基金 the Chinese Academy of Sciences(CAS)Large-Scale Scientific Facility Program,the CAS Center for Excellence in Particle Physics(CCEPP) Joint Large-Scale Scientific Facility Funds of the NSFC and CAS(U1532257,U1532258,U1732263) CAS Key Research Program of Frontier Sciences(QYZDJ-SSW-SLH003,QYZDJ-SSW-SLH040) 100 Talents Program of CAS INPAC,Shanghai Key Laboratory for Particle Physics and Cosmology,German Research Foundation DFG under Contracts Nos.Collaborative Research Center CRC 1044,FOR 2359 Istituto Nazionale di Fisica Nucleare,Italy,Koninklijke Nederlandse Akademie van Wetenschappen(KNAW)(530-4CDP03) Ministry of Development of Turkey(DPT2006K-120470) National Science and Technology fund,The Swedish Research Council U.S.Department of Energy(DE-FG02-05ER41374,DE-SC-0010118,DE-SC-0010504,DE-SC-0012069),University of Groningen(RuG) the Helmholtzzentrum fuer Schwerionenforschung GmbH(GSI),Darmstadt
- 摘要 Studies of e^+e~→D_s^+■(*0)K^-and the P-wave charmed-strange mesons are performed based on an e^+e^-collision data sample corresponding to an integrated luminosity of 567 pb-1 collected with the BESIII detector at s1/2=4.600 GeV. The processes of e^+e^-→D_s^+■*0K^- and D_s^+■~0K^- are observed for the first time and are found to be dominated by the modes D_s^+Ds1(2536)^-and D_s^+Ds2~*(2573)^-, respectively. The Born cross sections are measured to be σ~B(e^+e^-→D_s^+■*0K^-) =(10.1±2.3±0.8) pb and σ~B(e^+e^-→D_s^+■~0K^-) =(19.4±2.3± 1.6) pb, and the products of Born cross section and the decay branching fraction are measured to be σ~B(e^+e^-→D_s^+Ds1(2536)^-+c.c.)·B(Ds1(2536)^-→■*0K^-)=(7.5±1.8±0.7) pb and σ~B(e^+e^-→D_s^+Ds2~*(2573)^-+ c.c.)·B(Ds2~*(2573)^-→■~0 K^-)=(19.7 ± 2.9 ±2.0) pb. For the Ds1(2536)^-and Ds2~*(2573)^-mesons, the masses and widths are measured to be M(Ds1(2536)^-)=(2537.7±0.5 ±3.1) MeV/c2, Γ(Ds1(2536)^-) =(1.7 ±1.2 ±0.6)MeV, and M(Ds2~*(2573)^-)=(2570.7±2.0 ±1.7) MeV/c^2, Γ(Ds2~*(2573)^-)=(17.2 ±3.6 ±1.1) MeV. The spin-parity of the Ds2~*(2573)^-meson is determined to be J^p= 2^+. In addition, the processes e^+e^-→D_s^+■(*0)K^-are searched for using the data samples taken at four(two) center-of-mass energies between 4.416(4.527) and 4.575 GeV, and upper limits at the 90% confidence level on the cross sections are determined.
- 关键词 cross section P-wave D_s mesons resonance parameters spin-parity BESIII
- 分类号 O572.33 [理学—粒子物理与原子核物理]
