Studies of Beauty Suppression via Nonprompt <i>D</i><SUP>0</SUP> Mesons in Pb-Pb Collisions at √<i>s</i><sub>NN</sub>=5.02 TeV



Sirunyan, AM, Tumasyan, A, Adam, W, Ambrogi, F, Asilar, E, Bergauer, T, Brandstetter, J, Brondolin, E, Dragicevic, M, Eroe, J
et al (show 2276 more authors) (2019) Studies of Beauty Suppression via Nonprompt <i>D</i><SUP>0</SUP> Mesons in Pb-Pb Collisions at √<i>s</i><sub>NN</sub>=5.02 TeV. PHYSICAL REVIEW LETTERS, 123 (2). 022001-.

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Abstract

The transverse momentum spectra of D^{0} mesons from b hadron decays are measured at midrapidity (|y|<1) in pp and Pb-Pb collisions at a nucleon-nucleon center of mass energy of 5.02 TeV with the CMS detector at the LHC. The D^{0} mesons from b hadron decays are distinguished from prompt D^{0} mesons by their decay topologies. In Pb-Pb collisions, the B→D^{0} yield is found to be suppressed in the measured p_{T} range from 2 to 100  GeV/c as compared to pp collisions. The suppression is weaker than that of prompt D^{0} mesons and charged hadrons for p_{T} around 10  GeV/c. While theoretical calculations incorporating partonic energy loss in the quark-gluon plasma can successfully describe the measured B→D^{0} suppression at higher p_{T}, the data show an indication of larger suppression than the model predictions in the range of 2<p_{T}<5  GeV/c.

Item Type: Article
Uncontrolled Keywords: CMS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 05 Dec 2019 17:44
Last Modified: 13 Oct 2023 21:13
DOI: 10.1103/PhysRevLett.123.022001
Open Access URL: https://doi.org/10.1103/PhysRevLett.123.022001
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3065051