A New Extensions of MSSM: FMSSM
S. Nandi, Zurab Tavartkiladze

TL;DR
The paper introduces FMSSM, an extension of the MSSM with vector-like matter fields, enabling radiative mass generation for bottom quark and tau lepton, and predicts distinctive LHC signals.
Contribution
It proposes FMSSM, a novel MSSM extension with vector-like matter that naturally explains mass hierarchies and predicts unique Higgs sector phenomenology.
Findings
Radiative generation of m_b and m_τ in FMSSM.
Heavy Higgs bosons can be fermiophobic and gaugephobic.
Distinctive LHC signals for the Higgs sector.
Abstract
We propose an extension of the MSSM by adding vector like `matter' fields with masses near the TeV scale. This extension allows us to generate the masses of the bottom quark and tau lepton via radiative corrections such that only up type Higgs doublet couples with quarks and leptons. In addition to providing a natural explanation of the hierarchies between m_{b, \tau} and m_t, this new extension, which we call FMSSM, allows the heavy sector of the MSSM Higgs bosons to be essentially fermiophobic as well as gaugephobic. Moreover, in this scenario there is no upper bound for the parameter \tan \beta . FMSSM can be distinguished from the MSSM, and has peculiar and unorthodox signals at the LHC, especially for the Higgs sector.
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