Inclusive dijet hadroproduction with a rapidity veto constraint

TL;DR

This paper investigates how imposing a rapidity veto affects azimuthal-angle distributions in Mueller-Navelet jets, aiming to improve theoretical predictions and match LHC measurements by optimizing the veto parameter.

Contribution

It introduces a phenomenological analysis of rapidity veto effects on jet distributions, incorporating impact factors and parton distributions to better fit experimental data.

Findings

Optimal rapidity veto value around 2 improves data fit

Rapidity veto constrains minijet activity effectively

Enhanced agreement with LHC measurements

Abstract

We study ratios of azimuthal-angle distributions in Mueller-Navelet jets after imposing a rapidity veto constraint: the minijet radiation activity is restricted to only allow final-state partons separated at least a distance in rapidity $b$. It is well-known that the asymptotic growth with the rapidity separation of the two tagged jets of the NLLA BFKL Green's function requires a value of $b \simeq {\cal O} (2)$ in order to avoid unphysical cross sections. We further investigate this point from a phenomenological point of view and work out those values of $b$ which best fit angular distributions measured at the LHC in a realistic set-up where impact factors and parton distribution effects are also taken into account.