Multiplicity dependence of charm baryon and charm meson production in pPb collisions at sNN=8.16TeV
Journal
Physics Letters B
Journal Volume
868
Start Page
139672
ISSN
0370-2693
Date Issued
2025-09
Author(s)
Abstract
Measurements of the production yields of charm baryons (Λc+) and charm mesons (D0) in proton-lead collisions at a nucleon-nucleon center-of-mass energy of 8.16 TeV are presented. The data were collected in 2016 with the CMS experiment and correspond to an integrated luminosity of 186 nb−1. The Λc+ baryon is reconstructed from the decay channel Λc+→KS0p, while the D0 meson is reconstructed via D0→K−π+. The Λc+ baryon and D0 meson yields are extracted in several charged-particle multiplicity classes. No strong multiplicity dependence of the Λc+-to-D0 yield ratio is observed, unlike the observed strange baryon to strange meson yield ratio of Λ/Λ‾ to KS0, which shows a strong multiplicity dependence. This observation indicates different mechanisms for the multiplicity evolution of hadronization processes for charm and strange quarks and provides new constraints to the understanding of heavy flavor production and collectivity in small collision systems.
Subjects
CMS
Hadronization
Publisher
Elsevier BV
Type
journal article