Inclusive b and b anti-b production with quasi-multi-Regge kinematics at the Tevatron

TL;DR

This paper models inclusive b-jet and b anti-b production at the Tevatron using the quasi-multi-Regge kinematics approach, successfully describing preliminary experimental data without parameter adjustments.

Contribution

It introduces a novel application of the quasi-multi-Regge kinematics approach with Reggeized gluons and quarks to describe b-jet and b anti-b production at high energies.

Findings

Accurately describes Tevatron data on b-jet and b anti-b production

Identifies dominant scattering processes involving Reggeized particles

Uses Kimber-Martin-Ryskin prescription with standard parton distributions

Abstract

We consider b-jet hadroproduction in the quasi-multi-Regge-kinematics approach based on the hypothesis of gluon and quark Reggeization in t-channel exchanges at high energies. The preliminary data on inclusive b-jet and b anti-b-dijet production taken by the CDF Collaboration at the Fermilab Tevatron are well described without adjusting parameters. We find the main contribution to inclusive b-jet production to be the scattering of a Reggeized gluon and a Reggeized b-quark to a b quark, which is described by the effective Reggeon-Reggeon-quark vertex. The main contribution to b anti-b-pair production arises from the scattering of two Reggeized gluons to a b anti-b pair, which is described by the effective Reggeon-Reggeon-quark-quark vertex. Our anaysis is based on the Kimber-Martin-Ryskin prescription for unintegrated gluon and quark distribution functions using as input the Martin-Roberts-Stirling-Thorne collinear parton distribution functions of the proton.