Quantifying the Underlying Event: Investigating Angular Dependence of Multiplicity Classes and Transverse-momentum Spectra in High-energy pp Collisions at LHC Energies

TL;DR

This paper investigates how the underlying event in high-energy proton-proton collisions at 13 TeV varies with azimuthal angle, analyzing transverse momentum spectra and spherocity distributions using PYTHIA8 simulations within a non-extensive statistical framework.

Contribution

It introduces a detailed analysis of the azimuthal dependence of the underlying event and employs a non-extensive statistical approach to characterize the spectra in pp collisions.

Findings

Azimuthal dependence of transverse momentum spectra observed.

Spherocity distribution varies with azimuthal angle.

Underlying event characteristics are quantified at 13 TeV.

Abstract

We present a study of the transverse momentum spectra and their evolution in function of the position of the azimuthal of the particles associated to the leading particle. Additionally, the behavior of the spherocity distribution in the same azimuthal bins is reported. The studies were made using proton-proton collisions at $\sqrt{s}$ = 13 TeV using PYTHIA8 Monte Carlo event generator. The Multiplicity and midrapidity transverse momentum spectra of charged hadrons have been analyzed in the non-extensive statistical framework. The results on the findings corresponding to the Underlying Event are reported.