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Study of the lineshape of the chi(c1) (3872) state

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成果类型:
期刊论文
作者:
Aaij, R.*;Beteta, C. Abellan;Ackernley, T.;Adeva, B.;Adinolfi, M.;...
通讯作者:
Aaij, R.
作者机构:
[Ketel, T.; Tuning, N.; Hynds, D.; Perez, D. H. Campora; Usachov, A.; Hart, R.; Kuindersma, H. S.; Heijhoff, K.; Veronesi, M.; Aaij, R.; Snoch, A.; Greim, R.; van Beuzekom, M.; Martinez, M. Lucio; Kostiuk, I; Jans, E.; Esen, S.; Pellegrino, A.; Vitkovskiy, A.; Merk, M.; Butter, J. S.; Koppenburg, P.; Akiba, K. Carvalho; Gras, C. Sanchez; Raven, G.; Sole, S. Ferreres; Sierra, C. Vazquez; Govorkova, E.; Schubiger, M.; Hulsbergen, W.] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.
[Massafferri, A.; De Miranda, J. M.; Torres, M. Cruz; Machado, D. Torres; Gomes, A.; dos Reis, A. C.; Bediaga, I; Baptista Leite, J.] Ctr Brasileiro Pesquisas Fis CBPF, Rio De Janeiro, Brazil.
[De Paula, B. Souza; de Oliveira, L. Silva; Lopes, J. H.; Goicochea, J. M. Otalora; Polycarpo, E.; Gandelman, M.; Rangel, M. S.; Ferreira Rodrigues, F.; Nasteva, I; Garcia, L. Meyer; De Paula, L.; Amato, S.] Univ Fed Rio de Janeiro UFRJ, Rio De Janeiro, Brazil.
[Yang, Z.; Jiang, F.; Fan, J.; Ren, Z.; Xu, L.; Tang, Z.; Wang, M.; Zhang, W. C.; Gu, C.; Chen, C.; Zhu, X.; Luo, Y.; Mu, H.; Zeng, M.; Zhang, L.; Gan, Y.; Liu, X.] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.
[Gao, Y.; Zhang, S.; Xu, A.; Xu, Z.] Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing, Peoples R China.
通讯机构:
[Aaij, R.] N
Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.
语种:
英文
期刊:
PHYSICAL REVIEW D
ISSN:
2470-0010
年:
2020
卷:
102
期:
9
基金类别:
CERN; CAPES (Brazil)CAPES; CNPq (Brazil)National Council for Scientific and Technological Development (CNPq); FAPERJ (Brazil)Carlos Chagas Filho Foundation for Research Support of the State of Rio de Janeiro (FAPERJ); FINEP (Brazil)Ciencia Tecnologia e Inovacao (FINEP); MOST (China)Ministry of Science and Technology, China; NSFC (China)National Natural Science Foundation of China (NSFC); CNRS/IN2P3 (France)Centre National de la Recherche Scientifique (CNRS); MNiSW (Poland)Ministry of Science and Higher Education, Poland; NCN (Poland); MEN/IFA (Romania); MinES (Russia); FASO (Russia); MinECo (Spain); SNSF (Switzerland)Swiss National Science Foundation (SNSF); SER (Switzerland); NASU (Ukraine); STFC (United Kingdom)Science & Technology Facilities Council (STFC); NSF (USA)National Science Foundation (NSF); AvH Foundation (Germany)Alexander von Humboldt Foundation; EPLANET (European Union)European Union (EU); Marie Sklodowska-Curie Actions (European Union)European Union (EU); ERC (European Union)European Union (EU)European Research Council (ERC); ANR (France)French National Research Agency (ANR); Labex P2IO (France); OCEVU (France); Region Auvergne-Rhone-Alpes (France)Region Auvergne-Rhone-Alpes; RFBR (Russia)Russian Foundation for Basic Research (RFBR); RSF (Russia)Russian Science Foundation (RSF); Yandex LLC (Russia); GVA (Spain); XuntaGal (Spain); GENCAT (Spain); Herchel Smith Fund (United Kingdom); Royal Society (United Kingdom)Royal Society of London; English-Speaking Union (United Kingdom); Leverhulme Trust (United Kingdom)Leverhulme Trust
机构署名:
本校为其他机构
院系归属:
物理科学与技术学院
摘要:
A study of the lineshape of the chi(c1) (3872) state is made using a data sample corresponding to an integrated luminosity of 3 fb(-1) collected in pp collisions at center-of-mass energies of 7 and 8 TeV with the LHCb detector. Candidate chi(c1)(3872) and psi(2S) mesons from b-hadron decays are selected in the J/psi pi(+)pi(-) decay mode. Describing the lineshape with a Breit-Wigner function, the mass splitting between the chi(c1 )(3872) and psi(2S) states, Delta m, and the width of the chi(c1 )(3872) state, Gamma(Bw), are determined to be (Delta m=185.598 +/- 0.067 +/- 0.068 Mev,)(Gamma BW=1....

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