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Charged Higgs bosons in minimal supersymmetry: updated constraints and experimental prospects

David Eriksson, Farvah Mahmoudi and Oscar Stål

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We discuss the phenomenology of charged Higgs bosons in the MSSM with minimal flavor violation. In addition to the constrained MSSM (CMSSM) with universal soft supersymmetry breaking mass parameters at the GUT scale, we explore non-universal Higgs mass models (NUHM) where this universality condition is relaxed. To identify the allowed parameter space regions, we apply constraints from direct searches, low energy observables, and cosmology. We find that values of the charged Higgs mass as low as mH+ simeq  135 GeV can be accommodated in the NUHM models, but that several flavor physics observables disfavor large H+ contributions, associated with high tan β, quite independently of MSSM scenario. We confront the constrained scenarios with the discovery potentials reported by ATLAS and CMS, and find that the current exclusion by indirect constraints is similar to the expected LHC discovery reach with 30 fb−1 of data. Finally, we evaluate the sensitivity of the presented discovery potential to the choice of MSSM benchmark scenario. This sensitivity is found to be higher in the case of a light (mH+ < mt) charged Higgs.

Keywords

Higgs Physics

Hadronic Colliders

Supersymmetric Standard Model

PACS

12.60.Jv Supersymmetric models

14.80.Bn Standard-model Higgs bosons

98.80.Cq Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.)

11.30.Pb Supersymmetry

11.30.Qc Spontaneous and radiative symmetry breaking

13.20.He Decays of bottom mesons

Subjects

Gravitation and cosmology

Particle physics and field theory

Astrophysics and astroparticles

Dates

Issue 11 (November 2008)

Received 23 September 2008, accepted for publication 28 October 2008

Published 12 November 2008



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