Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-06-20
Phys.Rev.D78:093004,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
25 pages, 14 figures, references and appendix added, minor corrections; final version published in Phys.Rev.D
Scientific paper
10.1103/PhysRevD.78.093004
We study the supersymmetric version of the type-II seesaw mechanism assuming minimal supergravity boundary conditions. We calculate branching ratios for lepton flavour violating (LFV) scalar tau decays, potentially observable at the LHC, as well as LFV decays at low energy, such as $l_i \to l_j + \gamma$ and compare their sensitivity to the unknown seesaw parameters. In the minimal case of only one triplet coupling to the standard model lepton doublets, ratios of LFV branching ratios can be related unambigously to neutrino oscillation parameters. We also discuss how measurements of soft SUSY breaking parameters at the LHC can be used to indirectly extract information of the seesaw scale.
Hirsch Manfred
Kaneko Satoru
Porod Werner
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