Enlarging regions of the MSSM parameter space for large tan$\beta$ via SUSY decays of the heavy Higgs bosons - Archive ouverte HAL Access content directly
Journal Articles Journal of High Energy Physics Year : 2017

## Enlarging regions of the MSSM parameter space for large tan$\beta$ via SUSY decays of the heavy Higgs bosons

Anibal D. Medina
• Function : Correspondent author
• PersonId : 1013191

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Michael A. Schmidt
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#### Abstract

In the Minimal Supersymmetric Standard Model (MSSM) searches for the heaviest CP-even and CP-odd Higgs $H$, $A$ to tau-lepton pairs severely constrain the parameter region for large values of $\tan\beta$ and light Higgs bosons $H$, $A$. We demonstrate how the experimental constraint can be avoided by new decays to light third-generation sfermions, whose left-right couplings to $H$ can be maximised in regions of large trilinear couplings $A_{b}$, $A_{\tau}$ for sbottoms and staus, or large supersymmetric (SUSY) Higgs mass $\mu$ for stops. Due to the $\tan\beta$-enhancement in the production cross-sections via gluon-fusion and in association with bottom-quark pairs for $H$ and $A$, we find that down-type sfermions, in particular, sbottoms perform a better job in allowing more parameter space than up-type sfermions such as stops, which require much larger values of $\mu$ to compensate for $\tan\beta$. Vacuum stability as well as flavour observables constraints and direct searches for SUSY particles are imposed. We also associate the lightest CP-even Higgs with the observed 125 GeV SM-like Higgs and impose the experimental constraints from the LHC.

#### Domains

Physics [physics]

### Dates and versions

cea-01565662 , version 1 (20-07-2017)
cea-01565662 , version 2 (07-10-2022)

### Identifiers

• HAL Id : cea-01565662 , version 2
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### Cite

Anibal D. Medina, Michael A. Schmidt. Enlarging regions of the MSSM parameter space for large tan$\beta$ via SUSY decays of the heavy Higgs bosons. Journal of High Energy Physics, 2017, 2017, pp.95. ⟨cea-01565662v2⟩

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