Neutralino dark matter and Higgs mediated lepton flavor violation in the minimal supersymmetric standard model

作者：Cannoni M^*; Panella O

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2010, 81(3): 036009.

DOI：10.1103/PhysRevD.81.036009

We reexamine the prospects for the detection of Higgs-mediated lepton flavor violation at LHC, at a photon collider and in tau decays such as tau -> mu eta, tau -> mu gamma. We allow for the presence of a large, model independent, source of lepton flavor violation in the slepton mass matrix in the tau -> mu sector by the mass insertion approximation and constrain the parameter space using the tau lepton flavor violating decays together with the B-mesons physics observables, the anomalous magnetic moment of the muon, and the dark matter relic density. We further impose the exclusion limit on spin-independent neutralino-nucleon scattering from CDMS and the CDF limits from direct search of the heavy neutral Higgs at the TEVATRON. We find rates probably too small to be observed at future experiments if models have to accommodate for the relic density 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 and the running XENON100 experiment will cover the region of the parameter space where the lightest neutralino has large gaugino-Higgsino mixing.

• 出版日期2010-2-1