H^+H^- Pair Production at the Large Hadron Collider

TL;DR

This paper investigates charged Higgs boson pair production at the LHC within the MSSM, highlighting the roles of qq-bar annihilation, gg fusion, and the impact of squark loops on production rates.

Contribution

It provides a comparative analysis of different production mechanisms and emphasizes the significance of squark loop contributions in charged Higgs pair production.

Findings

bb-bar annihilation dominates at extreme tan(beta) values

Squark loops can significantly enhance gg fusion contributions

Charged Higgs pair production mechanisms vary with model parameters

Abstract

We study the pair production of charged Higgs bosons at the CERN Large Hadron Collider in the context of the minimal supersymmetric extension of the standard model. We compare the contributions due to qq-bar annihilation at the tree level and gg fusion, which proceeds at one loop. At small or large values of tan(beta), H^+H^- production proceeds dominantly via bb-bar annihilation, due to Feynman diagrams involving neutral CP-even Higgs bosons and top quarks, which come in addition to the usually considered Drell-Yan diagrams. In the case of gg fusion, the squark loop contributions may considerably enhance the well-known quark loop contributions.