Next-to-leading order QCD effects in associated charged Higgs and W boson production in the MSSM at the CERN Large Hadron Collider

TL;DR

This paper calculates next-to-leading order QCD corrections to the production of charged Higgs and W bosons in the MSSM at the LHC, showing corrections of about 10-15% and potential observability in certain parameter regions.

Contribution

It provides the first detailed NLO QCD correction calculations for associated charged Higgs and W production in the MSSM at the LHC, including Monte Carlo simulation results.

Findings

NLO QCD corrections can modify total cross sections by about 10-15%.

NLO corrections reduce the dependence on renormalization and factorization scales.

Observable signals at 5σ level are possible in some MSSM parameter regions.

Abstract

We present the calculations of the next-to-leading order (NLO) QCD corrections to the inclusive total cross sections for the associated production of the $W^{\pm}H^{\mp}$ through $b\bar{b}$ annihilation in the Minimal Supersymmetric Standard Model at the CERN Large Hadron Collider. The NLO QCD corrections can either enhance or reduce the total cross sections, but they generally efficiently reduce the dependence of the total cross sections on the renormalization/factorization scale. The magnitude of the NLO QCD corrections is about 10% in most of the parameter space and can reach 15% in some parameter regions. We also show the Monte Carlo simulation results for the $2j+\tau_{jet}+\not{p}_{T}$ signature from the $W^{\pm}$ and the $H^{\mp}$ decays including the NLO QCD effects, and find an observable signal at a $5\sigma$ level in some parameter region of the minimal supergravity model.