Multiplicity, transverse momentum and pseudorapidity dependence of open-heavy flavored hadron production in proton+proton collisions at $\sqrt{s}$= 13 TeV using PYTHIA8

TL;DR

This study uses PYTHIA8 simulations to analyze how open-heavy flavored hadrons like $ m{D}^{0}$ and $ m{ ext{Λ}}_{c}^{+}$ are produced in proton-proton collisions at 13 TeV, focusing on multiplicity, transverse momentum, and pseudorapidity dependencies, and explores thermalization signals of charm quarks.

Contribution

It introduces a detailed analysis of heavy-flavored hadron production using PYTHIA8 with flow-like features and connects initial partonic interactions to final state observables through thermodynamic and correlation studies.

Findings

Variation of effective temperature with multiplicity

Degree of non-extensivity from Tsallis statistics

Correlation between multi-partonic interactions and Knudsen number

Abstract

Recently, with the upgradation of LHC, it is realized that study of heavy-flavored hadrons, namely $\Lambda_{c}^{+}$ and $\rm{D}^{0}$ in hadronic collisions, could reveal the possibility of thermalization of charm quarks. With this motivation, we study the production dynamics of these hadrons using a pQCD-inspired Monte Carlo event generator called PYTHIA8 in proton+proton collisions at $\sqrt{s}$ = 13 TeV. The production dynamics of these hadrons are analyzed through charged-particle multiplicity, transverse momentum, and pseudorapidity. With the help of the established PYTHIA8 tunes to mimic the behavior of flow-like features, we investigated the variation of effective temperature and degree of non-extensivity using thermodynamically consistent non-extensive Tsallis statistics. We further attempted to establish a connection between the initial state and final state by estimating the correlation between the number of multi-partonic interactions ($\rm{n}_{MPI}$) with the Knudsen number.