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Lepton Flavour Violation in charged leptons within SUSY-seesaw

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Title: Lepton Flavour Violation in charged leptons within SUSY-seesaw
Authors: Arganda, E.1, Herrero, M.2, Portolés, J.3, Rodriguez-Sanchez, A.2, Teixeira, A.4
Source: Nuclear Physics B Proceedings Supplement. Apr2009, Vol. 189 Issue 1, p134-139. 6p.
Subjects: Flavor in particle physics, Supersymmetry, Leptons (Nuclear physics), Particle decays, Constraints (Physics), Spectrum analysis, Standard model (Nuclear physics), Physics experiments
Abstract: In this paper we review our main results for Lepton Flavour Violating (LFV) semileptonic tau decays and muon-electron conversion in nuclei within the context of two Constrained SUSY-Seesaw Models, the CMSSM and the NUHM. The relevant spectrum is that of the Minimal Supersymmetric Standard Model extended by three right handed neutrinos, and their corresponding SUSY partners, , . We use the seesaw mechanism for neutrino mass generation and choose a parameterisation of this mechanism that allows us to incorporate the neutrino data in our analysis of LFV processes. In addition to the full one-loop results for the rates of these processes, we will also review the set of simple formulas, valid at large , which are very useful to compare with present experimental bounds. The sensitivity to SUSY and Higgs sectors in these processes will also be discussed. This is a very short summary of the works in Refs. [E. Arganda, M. J. Herrero and J. Portoles, JHEP 0806 (2008) 079 [arXiv:0803.2039 [hep-ph]]] and [E. Arganda, M. J. Herrero and A. M. Teixeira, JHEP 0710 (2007) 104 [arXiv:0707.2955 [hep-ph]]] to which we refer the reader for more details. [Copyright &y& Elsevier]
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Abstract:In this paper we review our main results for Lepton Flavour Violating (LFV) semileptonic tau decays and muon-electron conversion in nuclei within the context of two Constrained SUSY-Seesaw Models, the CMSSM and the NUHM. The relevant spectrum is that of the Minimal Supersymmetric Standard Model extended by three right handed neutrinos, and their corresponding SUSY partners, , . We use the seesaw mechanism for neutrino mass generation and choose a parameterisation of this mechanism that allows us to incorporate the neutrino data in our analysis of LFV processes. In addition to the full one-loop results for the rates of these processes, we will also review the set of simple formulas, valid at large , which are very useful to compare with present experimental bounds. The sensitivity to SUSY and Higgs sectors in these processes will also be discussed. This is a very short summary of the works in Refs. [E. Arganda, M. J. Herrero and J. Portoles, JHEP 0806 (2008) 079 [arXiv:0803.2039 [hep-ph]]] and [E. Arganda, M. J. Herrero and A. M. Teixeira, JHEP 0710 (2007) 104 [arXiv:0707.2955 [hep-ph]]] to which we refer the reader for more details. [Copyright &y& Elsevier]
ISSN:09205632
DOI:10.1016/j.nuclphysbps.2009.03.024