Study of a Neutrino Mass Texture Generated in Supergravity with Bilinear R-Parity Violation

Abstract

We study a particular texture of the neutrino mass matrix generated in supergravity with bilinear R-Parity violation. The relatively high value of $\tan \beta$ makes the one-loop contribution to the neutrino mass matrix as important as the tree-level one. The atmospheric angle is nearly maximal, and its deviation from maximal mixing is related to the smallness of the ratio between the solar and atmospheric mass scales. There is also a common origin for the small values of the solar and reactor angles, but the later is much smaller due the large mass ratio between the lightest two neutrinos. There is a high dependence of the neutrino mass differences on the scalar mass $m_0$ and the gaugino mass $M_{1/2}$, but a smaller one of the mixing angles on the same sugra parameters. Measurements of branching ratios for the neutralino decays can give important information on the parameters of the model. There are good prospects at a future Linear Collider for these measurements, but a more detailed analysis is necessary for the LHC.

21 pages, 9 figures

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Cited by in corpus (9)

• Neutrino Mass and Mixing with Discrete Symmetry
• Flavour physics of leptons and dipole moments
• Physics at a future Neutrino Factory and super-beam facility
• Unified Models of Neutrinos, Flavour and CP Violation
• Search for R-parity Violating Decays of tau Sneutrinos to emu, mutau, and etau Pairs in ppbar Collisions at sqrt(s) = 1.96 TeV
• Neutrino Masses in Split Supersymmetry
• Searching supersymmetry at the LHCb with displaced vertices
• Bilinear R-parity violating supersymmetry under the light of neutrino oscillation, higgs and flavor data
• Status of R-parity violating SUSY