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Title: | Production of Lambda(+)(c) baryons in proton-proton and lead-lead collisions at root S-NN=5.02 TeV |
Authors: | CMS Collaboration Sirunyan, A. M. CHAUHAN, S. DUBE, SOURABH HEDGE, V. KAPOOR, A. KOTHEKAR, K. PANDEY, S. RANE, A. RASTOGI, A. SHARMA, SEEMA et al. Dept. of Physics |
Keywords: | CMS Physics Lambda(c) baryons Nuclear modification factor Heavy flavor TOC-APR-2020 2020 2020-APR-WEEK5 |
Issue Date: | Apr-2020 |
Publisher: | Elsevier B.V. |
Citation: | Physics Letters B, 803. |
Abstract: | The transverse momentum (P-T) spectra of inclusively produced A c P baryons are measured via the exclusive decay channel Lambda(+)(c) -> pK(-)pi(+) using the CMS detector at the LHC. Spectra are measured as a function of transverse momentum in proton-proton (pp) and lead-lead (PbPb) collisions at a nucleonnucleon center-of-mass energy of 5.02TeV. The measurement is performed within the Lambda(+)(c) rapidity interval vertical bar Y vertical bar < 1 in the p(T) range of 5-20GeV/c in pp and 10-20GeV/c in PbPb collisions. The observed yields of Lambda(+)(c) for p(T) of 10-20 GeV/c suggest a suppression in central PbPb collisions compared to pp collisions scaled by the number of nucleon-nucleon (NN) interactions. The Lambda(+)(c)/D-0 production ratio in pp collisions is compared to theoretical models. In PbPb collisions, this ratio is consistent with the result from pp collisions in their common p-t range. |
URI: | http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/4571 https://doi.org/10.1016/j.physletb.2020.135328 |
ISSN: | 0370-2693 1873-2445 |
Appears in Collections: | JOURNAL ARTICLES |
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