Associated charged Higgs and W boson production in the MSSM at the CERN large hadron collider

Summary, in English

We investigate the viability of observing charged Higgs bosons ( H± ) produced in association with W bosons at the CERN large hadron collider, using the leptonic decay H⁺ → + ν τ and hadronic W decay, within different scenarios of the minimal supersymmetric standard model (MSSM) with both real and complex parameters. Performing a parton level study we show how the irreducible standard model background from W+2 jets can be controlled by applying appropriate cuts and find that the size of a possible signal depends on the cuts needed to suppress QCD backgrounds and misidentifications. In the standard maximal mixing scenario of the MSSM we find a viable signal for large tan β and intermediate H ± masses ( ∼ mt ) when using softer cuts ( p_⊥, p_τjet > ∈50 GeV), whereas for harder cuts ( p_⊥, p_⊥ τ jet> 100 GeV) we only find a viable signal for very large tan β (). We have also investigated a special class of MSSM scenarios with large mass splittings among the heavy Higgs bosons where the cross-section can be resonantly enhanced by factors up to one hundred, with a strong dependence on the CP -violating phases. Even so we find that the signal after cuts remains small except for small masses ( {} m_t) when using the softer cuts. Finally, in all the scenarios we have investigated we have only found small CP -asymmetries.

• Author: D. Eriksson; S. Hesselbach; J. Rathsman
• Publishing year: 2008-01
• Language: English
• Pages: 267-280
• Publication/Series: European Physical Journal C
• Volume: 53
• Issue: 2
• Links: http://dx.doi.org/10.1140/epjc/s10052-007-0453-x
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 1434-6044