Measurement of prompt charged-particle production in pp collisions at a centre-of-mass energy of 13 TeV

TL;DR

This paper reports a measurement of the differential cross-section for prompt charged-particle production in proton-proton collisions at 13 TeV, providing data to test and refine hadronic interaction models.

Contribution

The study presents the first detailed measurement of prompt charged-particle production cross-sections at 13 TeV in the specified kinematic range, using LHCb data.

Findings

Measured differential cross-sections as functions of pT and η.

Compared results with various hadronic-interaction models.

Provided data for model validation and tuning.

Abstract

The differential cross-section of prompt inclusive production of long-lived charged particles in proton-proton collisions is measured using a data sample recorded by the LHCb experiment at a centre-of-mass energy of ${\sqrt{s} = 13\,\mathrm{TeV}}$. The data sample, collected with an unbiased trigger, corresponds to an integrated luminosity of ${5.4\,\mathrm{nb}^{-1}}$. The differential cross-section is measured as a function of transverse momentum and pseudorapidity in the ranges ${p_\mathrm{T} \in [0.08, 10)\,\mathrm{GeV}\,c^{-1}}$ and ${\eta \in [2.0, 4.8)}$ and is determined separately for positively and negatively charged particles. The results are compared with predictions from various hadronic-interaction models.