Production of $\Lambda_\mathrmc^+$ baryons in proton-proton and lead-lead collisions at $\sqrts_\mathrmNN=$ 5.02 TeV
Journal
Phys. Lett. B
Journal Volume
803
Pages
135328
Date Issued
2020
Author(s)
Abstract
The transverse momentum (p T ) spectra of inclusively produced + c baryons are measured via the exclusive decay channel + c pK - + 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 5.02 TeV. The measurement is performed within the + c rapidity interval |y| < 1 in the p T range of 5-20 GeV/c in pp and 10-20 GeV/c in PbPb collisions. The observed yields of + 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 + 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.
Type
journal article