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- Title
Transverse momentum and multiplicity dependence of Λc+/D0 ratio in pp collisions at s=13 TeV.
- Authors
Song, Jun; Li, Hai-hong; Shao, Feng-lan
- Abstract
We apply an equal-velocity quark combination model to study the Λ c + / D 0 ratio in the range p T ≲ 10 GeV/c in pp collisions at s = 13 TeV. We decompose the ratio into four parts which are related to quark numbers, light-flavor quark p T spectrum, charm quark p T spectrum, momentum correlation between light and charm quarks, respectively. Their influence on Λ c + / D 0 ratio is individually studied. The curvature property of light-flavor quark p T spectrum is the main reason of the non-monotonic p T dependence of Λ c + / D 0 ratio exhibited in high multiplicity events. Moreover, the multiplicity dependence of Λ c + / D 0 ratio as the function of p T is mainly because of the multiplicity dependence of light-flavor quark p T spectrum. Using the light-flavor quark p T spectrum obtained from experimental data of light-flavor hadrons and charm quark p T spectrum obtained from FONLL and/or PYTHIA calculations, the p T dependence of experimental data of Λ c + / D 0 ratio in high multiplicity events and that in low multiplicity events in pp collisions at s = 13 TeV are reasonably understood.
- Subjects
TOP quarks; MULTIPLICITY (Mathematics); QUARK models; NONMONOTONIC logic; HADRONS; HADRON interactions; FLAVOR in particle physics
- Publication
European Physical Journal C -- Particles & Fields, 2023, Vol 83, Issue 9, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-023-12007-7