Investigating Heavy-flavor vs Light-flavor Puzzle with Event Topology and Multiplicity in Proton+Proton Collisions at $\sqrt{s}$ = 13 TeV using PYTHIA8

TL;DR

This paper uses PYTHIA8 simulations to analyze how event topology and multiplicity affect heavy-flavor hadron production in proton-proton collisions at 13 TeV, providing insights into charm quark hadronization and production mechanisms.

Contribution

It introduces a detailed study of heavy-flavor production dependence on event topology and multiplicity using PYTHIA8, highlighting new correlations and ratios relevant to charm quark hadronization.

Findings

Heavy-flavor yields vary with event spherocity and multiplicity.

Ratios like Λ_c^+/D^0 show dependence on event topology.

PYTHIA8 successfully reproduces key heavy-flavor production features.

Abstract

Heavy-flavored hadrons are unique probes to study the properties of hot and dense QCD medium produced in ultra-relativistic heavy-ion collisions at RHIC and the LHC. Transverse spherocity is one of the event-topology variables used to separate jetty and isotropic events from the pool of event samples. This study aims to understand the production dynamics of heavy-flavors through the transverse momentum spectra, double differential yield and mean transverse momentum of J/$\psi$, $\rm D^{0}$ and $\Lambda_{c}^{+}$ as a function of charged-particle multiplicity and transverse spherocity. Further to investigate the possibility of hardonization of the charm quarks, transverse spherocity dependence ratios like $\Lambda_{c}^{+}$/$\rm D^{0}$ and $\Lambda^{0}$/$K^{-}$ are studied. For the current analysis, the events are generated by using 4C tuned PYTHIA8 for pp at $\sqrt{s}$ = 13 TeV, which is quite successful in explaining the heavy-flavor particle production at the LHC energies.