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Observation of a Narrow Pentaquark State, Pc (4312)+, and of the Two-Peak Structure of the Pc (4450)+(Open Access)

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成果类型:
期刊论文
作者:
Aaij, R.*;Beteta, C. Abellan;Adeva, B.;Adinolfi, M.;Aidala, C. A.;...
通讯作者:
Aaij, R.
作者机构:
[Ketel, T.; Mulder, M.; Tuning, N.; Hynds, D.; van Tilburg, J.; de Vries, J. A.; Veronesi, M.; Aaij, R.; Greim, R.; van Beuzekom, M.; Jans, E.; Bel, L. J.; Vazquez Sierra, C.; Esen, S.; Dall'Occo, E.; Pellegrino, A.; Vitkovskiy, A.; Merk, M.; Onderwater, C. J. G.; van Veghel, M.; Butter, J. S.; Koppenburg, P.; Gras, C. Sanchez; Raven, G.; Sole, S. Ferreres; Govorkova, E.; Kostiuk, I.; Schubiger, M.; Benson, S.; Hulsbergen, W.] Nikhef Natl Inst Subatom Phys, Amsterdam, Netherlands.
[Massafferri, A.; Cruz Torres, M.; De Miranda, J. M.; Soares Lavra, L.; Gomes, A.; Bediaga, I.; dos Reis, A. C.] CBPF, Rio De Janeiro, Brazil.
[Lopes, J. H.; Polycarpo, E.; Souza De Paula, B.; Gandelman, M.; Rangel, M. S.; Ferreira Rodrigues, F.; Otalora Goicochea, J. M.; Carvalho Akiba, K.; Silva de Oliveira, L.; De Paula, L.; Nasteva, I.; Amato, S.; Amhis, Y.] Univ Fed Rio de Janeiro, Rio de Janeiro, Brazil.
[Gao, Y.; Yang, Z.; Cai, H.; Zhang, S.; Jiang, F.; Beliy, N.; Dey, B.; Yu, J.; Yin, H.; Xu, A.; Liu, G.; Ling, P.; Wang, Y.; Xu, M.; Guo, X.; Ma, R.; Ren, Z.; Xu, L.; Lyu, X.; Tang, Z.; Szymanski, M.; Xu, Q.; Xiao, D.; Huang, W.; Li, H.; Wang, J.; Xu, Z.; Li, P. -R.; Wang, M.; He, J.; Hu, W.; Zhang, W. C.; Saur, M.; Qian, W.; Gu, C.; Sun, J.; Xing, H.; Qin, J.; Zheng, Y.; Han, Q.; Chen, C.; Zhu, X.; Sun, L.; Luo, Y.; Zhang, D.; Mu, H.; Xie, Y.; Mukherjee, M.; Zeng, M.; Zhang, L.; Gan, Y.; Liu, X.; Vieira, D.] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.
[Li, Y.; Lemaitre, F.; Wang, J.; Tobin, M.] Ihep, Beijing, Peoples R China.
通讯机构:
[Aaij, R.] N
Nikhef Natl Inst Subatom Phys, Amsterdam, Netherlands.
语种:
英文
期刊:
PHYSICAL REVIEW LETTERS
ISSN:
0031-9007
年:
2019
卷:
122
期:
22
基金类别:
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); BMBF (Germany)Federal Ministry of Education & Research (BMBF); DFG (Germany)German Research Foundation (DFG); MPG (Germany)Max Planck Society; INFN (Italy)Istituto Nazionale di Fisica Nucleare (INFN); NWO (Netherlands)Netherlands Organization for Scientific Research (NWO)Netherlands Government; MNiSW (Poland)Ministry of Science and Higher Education, Poland; NCN (Poland); MEN/IFA (Romania); MSHE (Russia); MinECo (Spain); SNSF (Switzerland)Swiss National Science Foundation (SNSF); SER (Switzerland); NASU (Ukraine); STFC (United Kingdom)UK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC); NSF (USA)National Science Foundation (NSF); AvH Foundation (Germany)Alexander von Humboldt Foundation; EPLANET (European Union); Marie Sklodowska-Curie Actions (European Union); ERC (European Union)European Research Council (ERC); ANR, Labex P2IO (France)French National Research Agency (ANR); ANR, Labex OCEVU (France)French National Research Agency (ANR); Region Auvergne-Rhone-Alpes (France)Region Auvergne-Rhone-Alpes; Key Research Program of Frontier Sciences of CAS (China); CAS PIFI (China); Thousand Talents Program (China); RFBR (Russia)Russian Foundation for Basic Research (RFBR); RSF (Russia)Russian Science Foundation (RSF); Yandex LLC (Russia); GVA (Spain); XuntaGal (Spain); GENCAT (Spain); Royal Society (United Kingdom)Royal Society of London; Leverhulme Trust (United Kingdom)Leverhulme Trust; Laboratory Directed Research and Development program of LANL (USA); CONACYT (Mexico)Consejo Nacional de Ciencia y Tecnologia (CONACyT); CERN; Science and Technology Facilities CouncilUK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC) [ST/N000242/1, ST/N000331/1] Funding Source: researchfish
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 narrow pentaquark state, Pc(4312)+, decaying to J/ψp, is discovered with a statistical significance of 7.3σ in a data sample of Λb0→J/ψpK- decays, which is an order of magnitude larger than that previously analyzed by the LHCb Collaboration. The Pc(4450)+ pentaquark structure formerly reported by LHCb is confirmed and observed to consist of two narrow overlapping peaks, Pc(4440)+ and Pc(4457)+, where the statistical significance of this two-peak interpretation is 5.4σ. The proximity of the ςc+D̄0 and ςc+D̄∗0 thresholds to the obser...

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