Microcanonical Jet-fragmentation in proton-proton collisions at LHC Energy

TL;DR

This paper demonstrates that a statistical model combining microcanonical and super-statistics effectively describes the distribution of charged hadrons within jets from proton-proton collisions at 7 TeV, revealing scale-dependent behavior similar to electron-positron annihilations.

Contribution

It introduces a novel statistical jet-fragmentation model that accounts for multiplicity fluctuations and scale dependence in proton-proton collision data.

Findings

The model accurately describes the $dN/dz$ distribution of charged hadrons.

The scale dependence of model parameters matches observations from electron-positron annihilations.

The approach unifies descriptions across different collision types.

Abstract

In this paper, we show that the distribution of the longitudinal momentum fraction of charged hadrons $dN/dz$ inside jets stemming from proton-proton collisions at $\sqrt{s}$ = 7 TeV center of mass energy can be described by a statistical jet-fragmentation model. This model combines microcanonical statistics and super-statistics induced by multiplicity fluctuations. The resulting scale dependence of the parameters of the model turns out to be similar to what was observed in electron-positron annihilations in Urmossy, Barnaf\"oldi, and Bir\'o.