Observation of the B+c meson in Pb-Pb and pp collisions at √sNN=5.02 TeV and measurement of its nuclear modification factor

Observation of the B+c meson in Pb-Pb and pp collisions at √sNN=5.02 TeV and measurement of its nuclear modification factor

The B-c(+) meson is observed for the first time in heavy ion collisions. Data from the CMS detector are used to study the production of the B-c(+) meson in lead-lead (Pb-Pb) and proton-proton (pp) collisions at a center of-mass energy per nucleon pair of root s(NN) = 5.02 TeV, via the B-c(+) -> (...

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Bibliographic Details
Published in:Physical Review Letters Vol. 128, № 25. P. 252301-1-252301-19
Other Authors: Tumasyan, Armen, Adam, Wolfgang, Andrejkovic, Janik Walter, Borshch, Vladislav, Ivanchenko, Vladimir, Tcherniaev, Evgueni
Format: Article
Language:English
Subjects:
мезоны
протон-протонные столкновения
ATLAS, детектор
статьи в журналах
Online Access:http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001000997
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245 1 0 |a Observation of the B+c meson in Pb-Pb and pp collisions at √sNN=5.02 TeV and measurement of its nuclear modification factor  |c A. Tumasyan, W. Adam, J. W. Andrejkovic [et al.] 
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520 3 |a The B-c(+) meson is observed for the first time in heavy ion collisions. Data from the CMS detector are used to study the production of the B-c(+) meson in lead-lead (Pb-Pb) and proton-proton (pp) collisions at a center of-mass energy per nucleon pair of root s(NN) = 5.02 TeV, via the B-c(+) -> (J/psi -> mu(+)mu(-))mu(+)nu(mu) decay. The B-c(+) nuclear modification factor, derived from the Pb-Pb-to-pp ratio of production cross sections, is measured in two bins of the trimuon transverse momentum and of the Pb-Pb collision centrality. The B-c(+) meson is shown to be less suppressed than quarkonia and most of the open heavy-flavor mesons, suggesting that effects of the hot and dense nuclear matter created in heavy ion collisions contribute to its production. This measurement sets forth a promising new probe of the interplay of suppression and enhancement mechanisms in the production of heavy-flavor mesons in the quark-gluon plasma. 
653 |a мезоны 
653 |a протон-протонные столкновения 
653 |a ATLAS, детектор 
655 4 |a статьи в журналах 
700 1 |a Tumasyan, Armen 
700 1 |a Adam, Wolfgang 
700 1 |a Andrejkovic, Janik Walter 
700 1 |a Borshch, Vladislav 
700 1 |a Ivanchenko, Vladimir 
700 1 |a Tcherniaev, Evgueni 
773 0 |t Physical Review Letters  |d 2022  |g Vol. 128, № 25. P. 252301-1-252301-19  |x 0031-9007 
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908 |a статья 
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999 |c 1000997  |d 1000997 

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