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Near-threshold DD spectroscopy and observation of a new charmonium state

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成果类型:
期刊论文
作者:
Aaij, R.;Abellan Beteta, C.;Adeva, B.;Adinolfi, M.;Aidala, C. A.;...
通讯作者:
Belyaev, I.
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.; Jans, E.; Bel, L. J.; Esen, S.; Dall'Occo, E.; Pellegrino, A.; Vitkovskiy, A.; Merk, M.; Archilli, F.; van Veghel, M.; Koppenburg, P.; Gras, C. Sanchez; Raven, G.; Sierra, C. Vazquez; Pajero, T.; Ferreres Sole, S.; Govorkova, E.; Kostiuk, I.; Benson, S.; Hulsbergen, W.] Nikhef, Natl Inst Subat Phys, Amsterdam, Netherlands.
[Tourinho Jadallah Aoude, R.; Massafferri, A.; 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.] Univ Fed Rio de Janeiro, UFRJ, Rio De Janeiro, Brazil.
[Gao, Y.; Yang, Z.; Jiang, F.; Xu, A.; Ren, Z.; Tang, Z.; Xu, Z.; Wang, M.; Zhang, W. C.; Gu, C.; Sun, J.; Chen, C.; Zhu, X.; Luo, Y.; Zeng, M.; Gan, Y.; Liu, X.] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.
[Beliy, N.; Lyu, X.; Szymanski, M.; Xu, Q.; Huang, W.; Li, P. -R.; He, J.; Saur, M.; Qian, W.; Qin, J.; Zheng, Y.; Vieira, D.] Univ Chinese Acad Sci, Beijing, Peoples R China.
通讯机构:
[Belyaev, I.] N
NRC KI, ITEP, Moscow, Russia.
语种:
英文
关键词:
Charm physics;Hadron-Hadron scattering (experiments);Heavy quark production;Quarkonium
期刊:
Journal of High Energy Physics
ISSN:
1029-8479
年:
2019
卷:
2019
期:
7
页码:
1-23
基金类别:
CAPESCAPES; CNPqNational Council for Scientific and Technological Development (CNPq); FAPERJCarlos Chagas Filho Foundation for Research Support of the State of Rio de Janeiro (FAPERJ); FINEP (Brazil)Ciencia Tecnologia e Inovacao (FINEP); MOST; NSFC (China)National Natural Science Foundation of China (NSFC); CNRS/IN2P3 (France)Centre National de la Recherche Scientifique (CNRS); BMBF, DFGGerman Research Foundation (DFG)Federal Ministry of Education & Research (BMBF); MPG (Germany)Max Planck Society; NWONetherlands Organization for Scientific Research (NWO); MNiSWMinistry of Science and Higher Education, Poland; NCN (Poland); MEN/IFA (Romania); MinECo (Spain); SNSFSwiss National Science Foundation (SNSF); SER (Switzerland); NASU(Ukraine); STFC(United Kingdom)Science & Technology Facilities Council (STFC); NSFNational Science Foundation (NSF); DESY(Germany); INFN (Italy)Istituto Nazionale di Fisica Nucleare (INFN); PIC (Spain); GridPP (United Kingdom); Yandex LLC (Russia); CSCS (Switzerland); IFIN-HH (Romania), CBPF(Brazil); PL-GRID (Poland); AvH Foundation (Germany)Alexander von Humboldt Foundation; EPLANET, Marie Sk lodowska-Curie Actions; ERC (European Union)European Union (EU)European Research Council (ERC); ANR, Labex P2IO and OCEVUFrench National Research Agency (ANR); Region Auvergne-Rhone-Alpes (France)Region Auvergne-Rhone-Alpes; Key Research Program of Frontier Sciences of CAS, CAS PIFI; Thousand Talents Program (China); RFBRRussian Foundation for Basic Research (RFBR); RSFRussian Science Foundation (RSF); GVA; XuntaGal and GENCAT (Spain); Royal SocietyRoyal Society of London; Leverhulme TrustLeverhulme Trust; Laboratory Directed Research and Development program of LANL; Science and Technology Facilities CouncilScience & 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:
Using proton-proton collision data, corresponding to an integrated luminosity of 9 fb−1, collected with the LHCb detector between 2011 and 2018, a new narrow charmonium state, the X(3842) resonance, is observed in the decay modes $$ \mathrm{X}(3842)\to {D}^0{\overline{D}}^0 $$ and X(3842) → D+D−. The mass and the natural width of this state are measured to be $$ \begin{array}{l}{m}_{X(3842)}=3842.71\pm 0.16\pm 0.12\ MeV/{c}^2,\hfill \\ {}{\varGamma}_{X(3842)}=2.79\pm 0.51\pm 0.35\ MeV,\hfill \end{array} $$ where...

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