The high-energy radiation pattern from BFKLex with double-log collinear contributions

TL;DR

This paper investigates high-energy jet production using BFKLex with collinear double-log contributions, analyzing jet properties and introducing a new rapidity separation observable to improve understanding of multi-Regge kinematics.

Contribution

It incorporates collinear double-log contributions into BFKLex and introduces a new observable for rapidity separation among emissions, enhancing jet production analysis.

Findings

Average transverse momentum increases with energy.

Azimuthal angle distributions are affected by collinear improvements.

New rapidity separation observable provides additional insights.

Abstract

We study high-energy jet production in the multi-Regge limit making use of the Monte Carlo event generator BFKLex which includes collinear improvements in the form of double-log contributions as presented in [1]. Making use of the anti-kt jet algorithm in the FastJet implementation, we present results for the average transverse momentum and azimuthal angle of the produced jets when two tagged forward/backward jets are present in the final state. We also introduce a new observable which accounts for the average rapidity separation among subsequent emissions. Results are presented, for comparison, at leading order and next-to-leading order, with the resummation of collinear double logs proposed in [2].