Higgs sector of the MSSM: lepton flavor violation at colliders and neutralino dark matter

TL;DR

This paper investigates the potential for detecting Higgs-mediated lepton flavor violation at colliders within the MSSM, considering experimental constraints and implications for dark matter and muon g-2 anomaly.

Contribution

It provides a detailed analysis of lepton flavor violation signals in the MSSM under experimental bounds, highlighting the challenges and prospects for detection at colliders.

Findings

Lepton flavor violation rates are likely too small for future detection if neutralino relic density and g-2 are simultaneously explained.

Neutralino-nucleon cross section is just below current experimental limits.

Gamma-ray signals from neutralino annihilation are strongly suppressed.

Abstract

We examine the prospects for the detection of Higgs mediated lepton flavor violation at LHC and at a photon collider in the minimal supersymmetric standard model with large lepton flavor violating mass insertions in the $\mu-\tau$ sector constraining the parameter space with several experimental bounds. We find rates probably too small to be observed at future experiments if models have to accommodate for a neutralino relic density as measured by WMAP and explain the $(g-2)_{\mu}$ anomaly: better prospects are found if these two constraints are applied only as upper bounds. The spin-independent neutralino-nucleon cross section in the studied constrained parameter space is just below the present CDMS limit while gamma rates from neutralino annihilation in the halo are strongly suppressed.