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Published December 2011 | Submitted
Journal Article Open

RvMDM and lepton flavor violation


A model relating radiative seesaw and minimal dark matter mass scales without beyond the standard model (SM) gauge symmetry (RνMDM) is constructed. In addition to the SM particles, the RνMDM contains, a Majorana fermion multiplet N _R and scalar multiplet χ that transform respectively as (1, 5, 0) and (1,6,−1/2) under the SM gauge group SU(3)_C × SU(2) _L × U(1)_Y . The neutral component N_R^0 plays the role of dark matter with a mass in the range of 9 to 10 TeV. This scale also sets the lower limit for the scale for the heavy degrees of freedom in N_R and χ which generate light neutrino masses through the radiative seesaw mechanism. The model predicts an N_R^0-nucleus scattering cross section that would be accessible with future dark matter direct detection searches as well as observable effects in present and searches for charged lepton flavor violating processes, such as l_i → l_j γ and μ − e conversion.

Additional Information

© 2011 SISSA. Received: August 16, 2011. Revised: November 1, 2011. Accepted: November 25, 2011. Published: December 13, 2011. Y.C, X.G.H and L.H.T were supported in part by NSC, NCTS, NNSF, SJTU Innovation Fund for Postgraduates and Postdocs. M.J.R-M was supported in part by Department of Energy contract DE-FG02-08ER41531 and by the Wisconsin Alumni Research Foundation.

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