The JETSCAPE framework: p+p results

TL;DR

The paper introduces the PP19 tune of the JETSCAPE framework, validating its performance against p+p collision data across various observables to establish a reliable baseline for nuclear collision studies.

Contribution

It presents a new PP19 tune for JETSCAPE and demonstrates its accuracy in reproducing p+p collision measurements, enhancing its utility for nuclear collision research.

Findings

JETSCAPE PP19 agrees with p+p data across energies

Framework accurately reproduces jet and hadron observables

Provides benchmarks for future nuclear collision simulations

Abstract

The JETSCAPE framework is a modular and versatile Monte Carlo software package for the simulation of high energy nuclear collisions. In this work we present a new tune of JETSCAPE, called PP19, and validate it by comparison to jet-based measurements in $p+p$ collisions, including inclusive single jet cross sections, jet shape observables, fragmentation functions, charged hadron cross sections, and dijet mass cross sections. These observables in $p+p$ collisions provide the baseline for their counterparts in nuclear collisions. Quantifying the level of agreement of JETSCAPE results with $p+p$ data is thus necessary for meaningful applications of JETSCAPE to A+A collisions. The calculations use the JETSCAPE PP19 tune, defined in this paper, based on version 1.0 of the JETSCAPE framework. For the observables discussed in this work calculations using JETSCAPE PP19 agree with data over a wide range of collision energies at a level comparable to standard Monte Carlo codes. These results demonstrate the physics capabilities of the JETSCAPE framework and provide benchmarks for JETSCAPE users.