Observation of Bs0 mesons and measurement of the Bs0/B+ yield ratio in PbPb collisions at √SNN=5.02 TeV
Entity
UAM. Departamento de Física TeóricaPublisher
ElsevierDate
2022-06-10Citation
10.1016/j.physletb.2022.137062
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 829 (2022): 137062
ISSN
0370-2693 (print); 1873-2445 (online)DOI
10.1016/j.physletb.2022.137062Funded by
Individuals have received support from the Marie-Curie programme and the European Research Council and Horizon 2020 Grant, contract Nos. 675440, 724704, 752730, 758316, 765710, 824093, 884104. The Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia María de Maeztu, grant MDM-2015-0509 and the Programa Severo Ochoa del Principado de AsturiasProject
info:eu-repo/grantAgreement/EC/H2020/675440/EU//AMVA4NewPhysics; info:eu-repo/grantAgreement/EC/H2020/724704/EU//HIGCC; info:eu-repo/grantAgreement/EC/H2020/752730/EU//LHCTOPVLQ; info:eu-repo/grantAgreement/EC/H2020/758316/EU//MajorNet; info:eu-repo/grantAgreement/EC/H2020/765710/EU//INSIGHTS; nfo:eu-repo/grantAgreement/EC/H2020/824093/EU//STRONG-2020; info:eu-repo/grantAgreement/EC/H2020/884104/EU//PSI-FELLOW-III-3i; Gobierno de España. MDM-2015-0509Editor's Version
https://doi.org/10.1016/j.physletb.2022.137062Subjects
B Mesons; CMS; Hadronization; Heavy Flavor; Quark Gluon Plasma; FísicaNote
Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAMRights
© 2022 The Author(s)Abstract
The Bs0 and B+ production yields are measured in PbPb collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. The data sample, collected with the CMS detector at the LHC, corresponds to an integrated luminosity of 1.7 nb−1. The mesons are reconstructed in the exclusive decay channels B→s0J/ψ(μ+μ−)ϕ(K+K−) and B→+J/ψ(μ+μ−)K+, in the transverse momentum range 7–50 GeV/c and absolute rapidity 0–2.4. The Bs 0 meson is observed with a statistical significance in excess of five standard deviations for the first time in nucleus-nucleus collisions. The measurements are performed as functions of the transverse momentum of the B mesons and of the PbPb collision centrality. The ratio of production yields of Bs 0 and B+ is measured and compared to theoretical models that include quark recombination effects
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Google Scholar:Tumasyan, A.
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CMS Collaboration
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Albajar Molera, Carmen
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Fernández Trocóniz Acha, Jorge
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Reyes Almanza, Rogelio
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