Jet and Underlying Event Measurements in P+P Collisions at RHIC

TL;DR

This paper reports on measurements of jets and the underlying event in proton-proton collisions at 200 GeV at RHIC, providing essential data for testing QCD theories and serving as a baseline for heavy-ion collision studies.

Contribution

It presents detailed experimental results on jet and underlying event characteristics in p-p collisions at RHIC, aiding in understanding QCD processes and baseline comparisons for heavy-ion research.

Findings

Jet properties measured at 200 GeV

Insights into underlying event structure

Baseline data for heavy-ion collision analysis

Abstract

The physics of hadron-hadron collisions is very complex involving both perturbative and non perturbative QCD. It is imperative to study p-p collisions in detail to provide a variety of measurements against which the theoretical calculations can be tested. Direct jet measurements, for instance, help address fundamental questions of the fragmentation process. They also form a critical baseline for comparisons of results from heavy-ion studies, where fragmentation functions are expected to be modified due to interactions with the hot and dense medium. Finally, it is important to understand how the beam-beam remnants, multi-parton interactions, and initial- and final-state radiation combine to produce the particles observed in the underlying event. I present results from p-p collisions at 200 GeV collisions as measured by the STAR experiment.