Technicolor corrections to b\bar{b} -> W^{\pm}\pi^{\mp}_t at the CERN Large Hadron Collider

TL;DR

This paper calculates technicolor corrections to charged top pion production associated with W bosons at the LHC, showing significant loop effects that enhance the production cross section within the topcolor assisted technicolor model.

Contribution

It provides the first detailed calculation of technicolor loop corrections to W-pion production at the LHC, highlighting their impact on cross sections.

Findings

Tree-level cross section can reach a few hundred femtobarns.

One-loop corrections increase the cross section by a few percent to twenty-four percent.

Comparison with gg subprocess shows different cross section contributions.

Abstract

In this paper we calculate the technicolor correction to the production of a charged top pion in association with a W boson via b\bar{b} annihilation at the CERN Large Hadron Collider in the context of the topcolor assisted technicolor model. We find that the cross section of pp \rightarrow b\bar{b} -> W^{\pm}\pi_t^{\mp} at the tree level can reach a few hundred femtobarns for reasonable ranges of the parameters, roughly corresponding to the result of the process pp -> b\bar{b} -> W^{\pm}H^{\mp} in the minimal supersymmetric standard model; the relative corrections arising from the one-loop diagrams are about a few percent to two dozen percent, and they will increase the cross section at the tree level. As a comparison, we also discuss the size of the hadron cross section via the other subprocess gg -> W^{\pm}\pi_t^{\mp}.