Nuclear modification factor for gluon jets

TL;DR

This paper demonstrates that initial state effects can explain the observed nuclear modification factor for gluon jet production at small x and high transverse momentum, without violating factorization.

Contribution

It shows that initial state effects alone can account for jet quenching phenomena observed in nuclear collisions, challenging the need for final state interactions.

Findings

Nuclear modification factor can be below unity without violating factorization.

Initial state effects can explain jet quenching for gluon jets.

The model aligns with ATLAS measurements.

Abstract

It is shown that the nuclear modification factor can be smaller that unity for jet production at small $x$ and at large transverse momentum without any violation of the factorization theorem and the initial state effects is able to explain the nuclear modification factor of the order of the one measured by ATLAS. In other word, initial state effects are able to describe the jet quenching for the gluon jet production.