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http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/3481| Title: | Measurement of the B± Meson Nuclear Modification Factor in Pb-Pb Collisions at √sNN=5.02 TeV |
| Authors: | CMS Collaboration Sirunyan, A. M. CHAUHAN, S. DUBE, SOURABH HEGDE, V. KAPOOR, A. KOTHEKAR, K. PANDEY, S. RANE, A. SHARMA, SEEMA et al. Dept. of Physics |
| Keywords: | Particle correlations Fluctuations QCD Nuclear reactions Quark-gluon Plasma Relativistic heavy-ion collisions 2017 |
| Issue Date: | Oct-2017 |
| Publisher: | American Physical Society |
| Citation: | Physical Review Letters, 119(15), 152301. |
| Abstract: | The differential production cross sections of B± mesons are measured via the exclusive decay channels B±→J/ψK±→μ+μ−K± as a function of transverse momentum in pp and Pb-Pb collisions at a center-of-mass energy √sNN=5.02 TeV per nucleon pair with the CMS detector at the LHC. The pp(Pb-Pb) data set used for this analysis corresponds to an integrated luminosity of 28.0 pb−1 (351 μb−1). The measurement is performed in the B± meson transverse momentum range of 7 to 50 GeV/c, in the rapidity interval |y|<2.4. In this kinematic range, a strong suppression of the production cross section by about a factor of 2 is observed in the Pb-Pb system in comparison to the expectation from pp reference data. These results are found to be roughly compatible with theoretical calculations incorporating beauty quark diffusion and energy loss in a quark-gluon plasma. |
| URI: | http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/3481 https://doi.org/10.1103/PhysRevLett.119.152301 |
| ISSN: | 0031-9007 1079-7114 |
| Appears in Collections: | JOURNAL ARTICLES |
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