Studies of beauty suppression via nonprompt D-0 mesons in Pb-Pb collisions at root s(NN)=5.02 TeV

Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2019) Studies of beauty suppression via nonprompt D-0 mesons in Pb-Pb collisions at root s(NN)=5.02 TeV. Physical Review Letters, 123. pp. 1-17. ISSN 0031-9007

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Abstract

The transverse momentum spectra of D0 mesons from b hadron decays are measured at midrapidity (jyj < 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 D0 mesons from b hadron decays are distinguished from prompt D0 mesons by their decay topologies. In Pb-Pb collisions, the B → D0 yield is found to be suppressed in the measured pT range from 2 to 100 GeV=c as compared to pp collisions. The suppression is weaker than that of prompt D0 mesons and charged hadrons for pT around 10 GeV=c. While theoretical calculations incorporating partonic energy loss in the quark-gluon plasma can successfully describe the measured B → D0 suppression at higher pT, the data show an indication of larger suppression than the model predictions in the range of 2 < pT < 5 GeV=c.

Item Type:	Article (Journal)
Additional Information:	7861/79625
Uncontrolled Keywords:	Studies of beauty suppression; Via nonprompt D-0 mesons; Pb-Pb collisions at root s(NN)=5.02 TeV
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science > Department of Physics
Depositing User:	Dr Mohd Adli MD Ali
Date Deposited:	18 Mar 2020 19:09
Last Modified:	18 Mar 2020 19:09
URI:	http://irep.iium.edu.my/id/eprint/79625

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