Probing Partonic Evolution and Hadronization via Balance Functions and Correlations of Charmed Hadrons

TL;DR

This paper uses PYTHIA 8.3 simulations to analyze charm hadron correlations and balance functions in proton-proton collisions at 13 TeV, exploring their dependence on fragmentation parameters and potential for future LHC measurements.

Contribution

It provides detailed predictions of charm correlation functions and balance functions in pp collisions, examining parameter effects and experimental feasibility.

Findings

Correlation strength varies with the number of balanced flavors.

Shape and magnitude of correlation functions are sensitive to fragmentation parameters.

Feasibility of measuring charm balance functions at the LHC is discussed.

Abstract

Predictions of charm correlation functions and more specifically balance functions are presented in proton--proton (pp) collisions at sqrt(s_NN) = 13 TeV based on the PYTHIA 8.3 event generator. Correlations are computed for identical and cross-species charmed hadrons in both minimum bias and high-pT biased collisions. We study the strength of correlations as a function of the number of balanced flavors and investigate the impact of variations of PYTHIA parameters controlling the Lund string fragmentation on the shape and strength of the correlation functions. The feasibility of measurements of the charm balance function presented is discussed in the context of the future LHC experiments.