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First Observation of the Doubly Charmed Baryon Decay Ξcc + + → Ξc+ π+(Open Access)

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成果类型:
期刊论文
作者:
Aaij, R.*;Adeva, B.;Adinolfi, M.;Aidala, C. A.;Ajaltouni, Z.;...
通讯作者:
Aaij, R.
作者机构:
[Ketel, T.; Mulder, M.; Tuning, N.; Hynds, D.; van Tilburg, J.; Carvalho, M. Feo Pereira Rivello; van Veghe, M.; Ali, S.; de Vries, J. A.; Veronesi, M.; Aaij, R.; Greim, R.; van Beuzekom, M.; Dufour, L.; Jans, E.; Bel, L. J.; Esen, S.; Dall'Occo, E.; Pellegrino, A.; Vitkovskiy, A.; Merk, M.; Onderwater, C. J. G.; Archilli, F.; Koppenburg, P.; Gras, C. Sanchez; Raven, G.; Sierra, C. Vazquez; Govorkova, E.; Kostiuk, I.; Benson, S.; Hulsbergen, W.] Nikhef Natl Inst Subatom Phys, Amsterdam, Netherlands.
[Massafferri, A.; Petruzzo, M.; De Miranda, J. M.; Soares Lavra, I.; Torres, M. Cruz; Gomes, A.; Molina Rodriguez, J.; Jadallah Aoude, R. Tourinho; Bediaga, I.; dos Reis, A. C.] CBPF, Rio De Janeiro, Brazil.
[Lopes, J. H.; Polycarpo, E.; Souza De Paula, B.; Gandelman, M.; Gobel, C.; Rangel, M. S.; Salustino Guimaraes, V.; Ferreira Rodrigues, F.; Hicheur, A.; Otalora Goicochea, J. M.; Potterat, C.; Akiba, K. Carvalho; Silva de Oliveira, L.; De Paula, L.; Nasteva, I.; Da Cunha Marinho, F.; Amato, S.] Univ Fed Rio de Janeiro, Rio de Janeiro, Brazil.
[Gao, Y.; Yang, Z.; Cai, H.; Jiang, F.; Beliy, N.; Dey, B.; Yu, J.; Yin, H.; Xu, A.; Wang, Y.; Xu, M.; Li, T.; Ren, Z.; Lyu, X.; Xu, Q.; Xiao, D.; Huang, W.; Xu, Z.; Li, P. -R.; Wang, M.; He, J.; Hu, W.; Zhang, W. C.; Saur, M.; Qian, W.; Gu, C.; Sun, J.; Qin, J.; Zheng, Y.; Chen, C.; Zhu, X.; Sun, L.; Zhang, D.; An, L.; Xie, Y.; Davis, A.; Zhang, L.; Gan, Y.; Liu, X.; Vieira, D.] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.
[Chefdeville, M.; Decamp, D.; Reboud, M.; Marchand, J. F.; Xu, Z.; Ghez, Ph.; Tournefier, E.; Pietrzyk, B.; Minard, M. -N.] Univ Savoie Mt Blanc, Univ Grenoble Alpes, CNRS, IN2P3,LAPP, Annecy, France.
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:
2018
卷:
121
期:
16
基金类别:
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Conselho Nacional de Desenvolvimento Científico e Tecnológico Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro Financiadora de Estudos e Projetos Ministry of Science and Technology of China (MOST) People’s Republic of China National Natural Science Foundation of China Centre National de la Recherche Scientifique Bundesministerium für Bildung und Forschung Deutsche Forschungsgemeinschaft Max-Planck-Gesellschaft Instituto Nazionale di Fisica Nucleare (INFN) Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) Ministerstwo Nauki i Szkolnictwa Wyzszego (MNiSW) Narodowe Centrum Nauki (NCN) Ministry of Education and Science of the Russian Federation Federal Agency for Science and Innovation Ministerio de Economía y Competitividad Swiss National Science Foundation State Secretariat for Education, Research and Innovation National Academy of Sciences of Ukraine Science and Technology Facilities Council National Science Foundation Karlsruher Institut für Technologie Deutsches Elektronen-Synchrotron (DESY) Alexander von Humboldt Foundation Marie Skłodowska-Curie Actions European Research Council ANR. Agence Nationale de la Recherche Russian Foundation for Basic Research Russian Science Foundation Consellería de Cultura, Educación e Ordenación Universitaria, Xunta de Galicia Generalitat de Catalunya The Royal Society English-Speaking Union Leverhulme Trust Generalitat Valenciana Institute National de Physique Nucleaire et de Physique des Particules (CNRS/IN2P3) (Republic of France) Institul de Fizica Atomica (MEN/IFA) (Romania) SURF, Collaborative organisation for ICT in Dutch higher education and research (Kingdom of the Netherlands) PIC, Port d’Informacio Cientifica (Kingdom of Spain) GridPP, UK Computing for Particle Physics (United Kingdom of Great Britain and Northern Ireland) National Research Center “Kurchatov” Institute (Russian Federation) Yandex LLC (Russian Federation) CSCS (Switzerland) IFIN-HH (Romania) CBPF (Federative Republic of Brazil) PL-GRID (Republic of Poland) Ohio Supercomputer Center (OSC) (United States) EPLANET, The European Particle physics Latin America NETwork (European Union) Labex P2IO, Physique des 2 Infinis et des Origines (Republic of France) Labex OCEVU, Origine Constituants et Evolution de l’Univers (Republic of France) Région Auvergne-Rhône-Alpes (Republic of France) Key Research Program of Frontier Sciences of CAS CAS PIFI Thousand Talents Program (China) GVA Herchel Smith Fund (United Kingdom of Great Britain and Northern Ireland) CAS President’s International Fellowship Initiative GENCAT
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本校为其他机构
院系归属:
物理科学与技术学院
摘要:
The doubly charmed baryon decay Ξcc++→Ξc+π+ is observed for the first time, with a statistical significance of 5.9σ, confirming a recent observation of the baryon in the Λc+K-π+π+ final state. The data sample used corresponds to an integrated luminosity of 1.7 fb-1, collected by the LHCb experiment in pp collisions at a center-of-mass energy of 13 TeV. The Ξcc++ mass is measured to be 3620.6±1.5(stat)±0.4(syst)±0.3(Ξc+) MeV/c2 and is consistent with the previous result. The ratio of branching fractions between the decay modes is me...

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