Jet energy loss due to multiple scattering in the nucleus

TL;DR

This paper investigates jet energy loss caused by multiple scatterings within a nucleus using perturbative QCD, developing an iterative calculation method that accounts for up to 16 collisions, revealing a target-independent scaling variable shift.

Contribution

It introduces a reliable iterative approach to compute jet energy loss due to multiple scatterings in nuclear matter within perturbative QCD.

Findings

Shift of the scaling variable reaches ~0.1 at medium x and p

Shift is independent of atomic number and energy

Method allows up to 16 successive collisions in rescattering

Abstract

Energy loss of a jet due to multiple collisions in the nuclear target is studied in the framework of the perturbative QCD with an infrared cutoff. An iterational procedure for its calculation is developed, which allows to reliably find up to 16 successive collisions in rescattering. The calculated shift of the scaling variable reaches values of the order 0.1 at medium $x$ and transverse momentum $p$ in the interval 5-10 GeV/c. The shift is found to be independent of the atomic number of the target and energy.