Probing minimal supergravity in the type-I seesaw mechanism with lepton flavor violation at the CERN LHC
- AHEP Group, Instituto de Fisica Corpuscular - C.S.I.C./Universitat de Valencia Edificio de Institutos de Paterna, Apartado 22085, E-46071 Valencia (Spain)
The most general supersymmetric seesaw mechanism has too many parameters to be predictive and thus can not be excluded by any measurements of lepton flavor violating (LFV) processes. We focus on the simplest version of the type I seesaw mechanism assuming minimal supergravity boundary conditions. We compute branching ratios for the LFV scalar tau decays, {tau}-tilde{sub 2}{yields}(e,{mu})+{chi}{sub 1}{sup 0}, as well as loop-induced LFV decays at low energy, such as l{sub i}{yields}l{sub j}+{gamma} and l{sub i}{yields}3l{sub j}, exploring their sensitivity to the unknown seesaw parameters. We find some simple, extreme scenarios for the unknown right-handed parameters, where ratios of LFV branching ratios correlate with neutrino oscillation parameters. If the overall mass scale of the left neutrinos and the value of the reactor angle were known, the study of LFV allows, in principle, to extract information about the so-far unknown right-handed neutrino parameters.
- OSTI ID:
- 21250202
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 78, Issue 1; Other Information: DOI: 10.1103/PhysRevD.78.013006; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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