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First Observation of the Decay Bs0→K−μ+νμ and a Measurement of |Vub|/|Vcb|

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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.; Mauri, A.; Usachov, A.; Lukashenko, V; Kuindersma, H. S.; de Vries, J. A.; Heijhoff, K.; Veronesi, M.; Aaij, R.; Snoch, A.; De Bruyn, K.; van Beuzekom, M.; Martinez, M. Lucio; Kostiuk, I; Jans, E.; Greeven, L. M.; Esen, S.; Geertsema, R. E.; Pellegrino, A.; Gabriel, E.; Merk, M.; Onderwater, C. J. G.; van Veghel, M.; Butter, J. S.; Koppenburg, P.; Pawley, C. J.; Soares, M. Senghi; Akiba, K. Carvalho; Klaver, S.; Gras, C. Sanchez; Raven, G.; Sole, S. Ferreres; Sierra, C. Vazquez; Schubiger, M.; Hulsbergen, W.] Nikhef Natl Inst Subatom Phys, Amsterdam, Netherlands.
[Leite, J. Baptista; Massafferri, A.; De Miranda, J. M.; Torres, M. Cruz; Machado, D. Torres; Gomes, A.; dos Reis, A. C.; Bediaga, I] Ctr Brasileiro Pesquisas Fis CBPF, Rio De Janeiro, Brazil.
[De Paula, B. Souza; Lopes, J. H.; Goicochea, J. M. Otalora; Polycarpo, E.; Gandelman, M.; Gobel, C.; Rangel, M. S.; Hicheur, A.; Nasteva, I; Garcia, L. Meyer; Rodrigues, F. Ferreira; De Paula, L.; Amato, S.; De Almeida, F. L. Souza; Abrantes, F. Goncalves] Univ Fed Rio de Janeiro UFRJ, Rio De Janeiro, Brazil.
[Yang, Z.; Cai, H.; Jiang, F.; Bian, L.; Dey, B.; Fan, J.; Liu, G.; Ren, Z.; Xu, L.; Huang, X.; Li, H.; Wang, J.; Wang, M.; Hu, J.; Gu, C.; Gong, G.; Kang, Y.; Fang, B.; Chen, C.; Zhu, X.; Sun, L.; Luo, Y.; Yang, D.; Mu, H.; Zeng, M.; Zhang, L.; Gan, Y.; Liu, X.] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.
[Gao, Y.; Zhang, S.; Zhang, Y.; Xu, A.; Wang, J.; Shen, Z.; 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 Subatom Phys, Amsterdam, Netherlands.
语种:
英文
期刊:
Physical Review Letters
ISSN:
0031-9007
年:
2021
卷:
126
期:
8
页码:
081804
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); MSHE (Russia); MICINN (Spain)Spanish Government; SNSF (Switzerland)Swiss National Science Foundation (SNSF); SER (Switzerland); NASU (Ukraine); STFC (United Kingdom)UK Research & Innovation (UKRI)Science & Technology Facilities Council (STFC); DOE NP (US); NSF (US)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); A*MIDEX (France)French National Research Agency (ANR); ANR (France)French National Research Agency (ANR); Labex P2IO (France); OCEVU (France); Region Auvergne-RhoneAlpes (France)Region Auvergne-Rhone-Alpes; Key Research Program of Frontier Sciences of CAS (China); CAS PIFI (China); CAS CCEPP (China); Fundamental Research Funds for Central Universities (China); Sci. and Tech. Program of Guangzhou (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 KingdomRoyal Society of London; 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:
The first observation of the suppressed semileptonic B-s(0) -> K-mu(+)nu(mu) decay is reported. Using a data sample recorded in pp collisions in 2012 with the LHCb detector, corresponding to an integrated luminosity of 2 fb(-1), the branching fraction B(B-s(0) -> K-mu(+)nu(mu)) is measured to be [1.06 +/- 0.05(stat) +/- 0.08(syst)] x 10(-4), where the first uncertainty is statistical and the second one represents the combined systematic uncertainties. The decay B-s(0) -> D-s(-)mu(+)nu(mu), where D-s(-) is reconstructed in the final state K+K-pi(-), is used as a normalization channel to minimiz...

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