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Observation of D0 Meson Decays to π+π-μ+μ- and K+K-μ+μ- Final States

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成果类型:
期刊论文
作者:
Aaij, R.*;Adeva, B.;Adinolfi, M.;Ajaltouni, Z.;Akar, S.;...
通讯作者:
Aaij, R.
作者机构:
[Di Canto, A.; Durante, P.; Ferro-Luzzi, M.; Bozzi, C.; Fontana, M.; Kvaratskheliya, T.; Ponce, S.; Karacson, M.; Merli, A.; Byczynski, W.; Hatch, M.; Forty, R.; Corti, G.; McCann, M.; Schmidt, B.; Gaspar, C.; Perez, D. H. Campora; Voneki, B.; Roiser, S.; Seyfert, P.; Wyllie, K.; Dordei, F.; Contu, A.; Lacarrere, D.; Leflat, A.; Cattaneo, M.; Jost, B.; Hasse, C.; Farber, C.; Rihl, M.; Siddi, B. G.; Lindner, R.; Dijkstra, H.; Chitic, S. -G.; Thomas, E.; Funk, W.; Palutan, M.; Golutvin, A.; Lemaitre, F.; Collins, P.; Jacobsson, R.; Neufeld, N.; Buytaert, J.; Frei, C.; Aaij, R.; Mathe, Z.; Grillo, L.; Stagni, F.; Pearce, A.; Teubert, F.; Lupton, O.; Perazzini, S.; Gys, T.; Wilkinson, G.; Frank, M.; Clemencic, M.; Valassi, A.; Alessio, F.; Trisovic, A.; Fohl, K.; Popov, D.; Stahl, M.; Matev, R.; Cardoso, L. A. Granado; Joram, C.; Altarelli, M. Pepe; Barschel, C.; Charpentier, Ph.; Ruf, T.; Neri, N.; Whitehead, M.; Stahl, S.; Bettler, M. -O.; Gruber, L.; Schopper, A.; Couturier, B.; Cavallero, G.; Salzgeber, M. Ravonel; Schindler, H.; Haen, C.; Barbosa, J. V. Viana; Dziurda, A.; Johnson, D.; Schwemmer, R.; Vagnoni, V.; D'Ambrosio, C.; Declara, P. Fernandez; Closier, J.; van Herwijnen, E.; Coombs, G.; Valat, S.; Sridharan, S.; Colombo, T.] CERN, European Org Nucl Res, Geneva, Switzerland.
[Tourinho Jadallah Aoude, R.; Pappagallo, M.; Massafferri, A.; De Miranda, J. M.; Rodriguez, J. Molina; Torres, M. Cruz; Gomes, A.; Lavra, L. Soares; Palano, A.; Bediaga, I.; Pastore, A.; Rodrigues, A. B.; dos Reis, A. C.; Guimaraes, V. Salustino] CBPF, Rio De Janeiro, Brazil.
[De Paula, B. Souza; de Oliveira, L. Silva; Lopes, J. H.; Marinho, F. Da Cunha; Goicochea, J. M. Otalora; Polycarpo, E.; Gandelman, M.; Rangel, M. S.; Tostes, D. Martins; Hicheur, A.; Potterat, C.; Rodrigues, F. Ferreira; Akiba, K. Carvalho; De Paula, L.; Nasteva, I.; Amato, S.] Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil.
[Gao, Y.; Yang, Z.; Jiang, F.; Li, T.; Zhu, X.; An, L.; Davis, A.; Zhang, L.; Liu, X.] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.
[Chefdeville, M.; Decamp, D.; Reboud, M.; Beaucourt, L.; T'Jampens, S.; Marchand, J. F.; Tisserand, V.; Xu, Z.; Ghez, Ph.; Tournefier, E.; Pietrzyk, B.; Minard, M. -N.] Univ Savoie Mont Blanc, CNRS, IN2P3, LAPP, Annecy Le Vieux, France.
通讯机构:
[Aaij, R.] C
CERN, European Org Nucl Res, Geneva, Switzerland.
语种:
英文
期刊:
PHYSICAL REVIEW LETTERS
ISSN:
0031-9007
年:
2017
卷:
119
期:
18
页码:
181805
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); 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); MinES (Russia); FASO (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); Conseil General de Haute-Savoie (France)Region Auvergne-Rhone-Alpes; Labex ENIGMASS (France); OCEVU (France); Region Auvergne (France)Region Auvergne-Rhone-Alpes; RFBR (Russia)Russian Foundation for Basic Research (RFBR); Yandex LLC (Russia); GVA (Spain); XuntaGal (Spain); GENCAT (Spain); Herchel Smith Fund; Royal SocietyRoyal Society of LondonEuropean Commission; Royal Commission for the Exhibition of 1851; Leverhulme Trust (United Kingdom)Leverhulme Trust; Science and Technology Facilities CouncilUK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC) [ST/G005974/1, 1514623, LHCb, 1641747, GRIDPP, 1707993, LHCb Upgrades, ST/H006737/1, ST/K003410/1, ST/N000250/1, ST/J004332/1, 1416165, 1681016, 1369397, 1397914, 1565116, 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
心理学院
摘要:
The first observation of the D0→π+π-μ+μ- and D0→K+K-μ+μ- decays is reported using a sample of proton-proton collisions collected by LHCb at a center-of-mass energy of 8 TeV, and corresponding to 2 fb-1 of integrated luminosity. The corresponding branching fractions are measured using as normalization the decay D0→K-π+[μ+μ-]ρ0/ω, where the two muons are consistent with coming from the decay of a ρ0 or ω meson. The results are B(D0→π+π-μ+μ-)=(9.64±0.48±0.51±0.97)×10-7 and B(D0→K+K-μ+μ-)=(1.54±0.27±0.09±0.16)×10-7, ...

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