Production of Λc+ Baryons in Proton-Proton and Lead-Lead Collisions at √sNN = 5.02 TeV

Physics Letters B 2020
Viesturs Veckalns

The transverse momentum (pT) spectra of inclusively produced Λc+ baryons are measured via the exclusive decay channel Λc+→pK−π+ 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 nucleon-nucleon center-of-mass energy of 5.02 TeV. The measurement is performed within the Λc+ rapidity interval |y|<1 in the pT range of 5–20GeV/c in pp and 10–20GeV/c in PbPb collisions. The observed yields of Λc+ for pT of 10–20GeV/c suggest a suppression in central PbPb collisions compared to pp collisions scaled by the number of nucleon-nucleon (NN) interactions. The Λc+/D0 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 pT range.

Atslēgas vārdi
CMS | Heavy flavor | Lambda(c) baryons | Nuclear modification factor | Physics
DOI
10.1016/j.physletb.2020.135328
Hipersaite
https://www.sciencedirect.com/science/article/pii/S0370269320301325?via%3Dihub

Veckalns, V., CERN international group of authors. Production of Λc+ Baryons in Proton-Proton and Lead-Lead Collisions at √sNN = 5.02 TeV. Physics Letters B, 2020, Vol. 803, Article number 135328. ISSN 0370-2693. Pieejams: doi:10.1016/j.physletb.2020.135328

Publikācijas valoda
English (en)