Probing medium-induced energy loss with direct jet reconstruction in p+p and Cu+Cu collisions at PHENIX

TL;DR

This paper introduces a new Gaussian filter-based jet reconstruction algorithm applied to p+p and Cu+Cu collision data from PHENIX, demonstrating its effectiveness in measuring jet spectra and correlations.

Contribution

A novel jet reconstruction algorithm using a Gaussian filter combined with fake jet rejection for improved accuracy in heavy ion collision analysis.

Findings

Successful reconstruction of jet spectra in p+p and Cu+Cu collisions

Observation of jet-jet angular correlations in both collision types

Demonstration of the algorithm's efficiency and fake rejection capabilities

Abstract

We present the application of a new jet reconstruction algorithm that uses a Gaussian filter to locate and reconstruct the jet energy to p+p and heavy ion data from the PHENIX detector. This algorithm is combined with a fake jet rejection scheme that provides efficient jet reconstruction with an acceptable fake rate. We show our first results on the measured jet spectra, jet--jet angular correlation in p+p and Cu+Cu collisions.