Lambda_c^+/Lambda_c^- and Lambda_b^0/\bar{Lambda}_b^0 production asymmetry at the LHC from heavy quark recombination

TL;DR

This paper predicts small production asymmetries (~1-3%) for Lambda_c and Lambda_b baryons in proton-proton collisions at LHC energies using the heavy quark recombination model, based on parameters from previous experiments.

Contribution

It introduces a prediction of heavy baryon production asymmetries at LHC energies using the heavy quark recombination mechanism with non-perturbative parameters.

Findings

Asymmetry for Lambda_c^+/Lambda_c^- is about 1-2%.

Asymmetry for Lambda_b^0/ar{Lambda}_b^0 is about 1-3%.

Predictions are for the forward region covered by LHCb.

Abstract

The asymmetries in the forward region production cross section of Lambda_c^+/Lambda_c^- and Lambda_b^0/\bar{Lambda}_b^0 are predicted using the heavy quark recombination mechanism for pp collisions at 7 TeV and 14 TeV. Using non-perturbative parameters determined from various previous experiments, we find that A_p(Lambda_c^+/Lambda_c^-) ~ 1-2% and A_p(Lambda_b^0/\bar{Lambda}_b^0) ~ 1-3% in the forward region covered by the LHCb experiment.