Leptonic Radiative Decay in Supersymmetry without R parity

Abstract

We present a detailed analysis together with exact numerical calculations on one-loop contributions to the branching ratio of the radiative decay of $\mu$ and $\tau$, namely $\mu \to e\gamma$, $\tau \to e\gamma$, and $\tau \to \mu \gamma$ from supersymmetry without R parity, focusing on contributions involving bilinear couplings. A numerical study is performed to obtain explicit bounds on the parameters under the present experimental limit. We present, and use in the calculation, formulas for exact mass eigenstate effective couplings. In this sense, we present an exact analysis free from approximation for the first time. After comparing our results against the closest early analysis, we discovered a major difference in resulted constraints on some ${\mu }_i^{\ast }{B}_j$ combinations. Constraints from neutrino masses on the parameters were considered. Our result indicates that the branching ratio measurement on $\mu \to e\gamma$ down to $10^{-13}-10^{-14}$ and beyond, as targeted by the MEG experiment, has a chance of observing decay from the R-parity violating scenario.

Comments: 24 pages, 12 figures, 3 table, RevTex; Corrected typos, 2 added references for section 1. The proof-read version to be published in Phys. Rev. D

References in corpus (22)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• New Limit for the Family-Number Non-conserving Decay mu+ to e+_gamma
• Search for Lepton Flavor Violation in the Decay tau -> mu gamma
• Lepton Flavour Violation from SUSY--GUTs: Where do we stand for MEG, PRISM/PRIME and a Super Flavour factory
• Search for Lepton Flavor Violation in the Decay tau -> electron gamma
• Charged Lepton Flavour Violation and (g-2)_mu in the Littlest Higgs Model with T-Parity: a clear Distinction from Supersymmetry
• Neutrino Oscillations and Flavor Structure of Supersymmetry without R-Parity
• Lepton flavour violation in The Little Higgs model
• A Simple Phenomenological Parametrization of Supersymmetry without R-Parity
• Supersymmetry without R-parity : Constraints from Leptonic Phenomenology
• R-parity Violating Contribution to Neutron EDM at One-loop Order
• $\mu \to e\gamma$ from Supersymmetry without R parity
• Fermion Electric Dipole Moments in Supersymmetric Models with R-parity Violation
• Lepton Flavor Violation and Bilinear R-parity Violation
• One-loop Neutron Electric Dipole Moment from Supersymmetry without R-parity
• LR Scalar Mixings and One-loop Neutrino Masses
• A Detailed Analysis of One-loop Neutrino Masses from the Generic Supersymmetric Standard Model
• Running $U_{e3}$ and BR($\mu \to e+\gamma$) in SUSY-GUTs
• On the Formulation of the Generic Supersymmetric Standard Model (or Supersymmetry without R parity)
• Quark Loop Contributions to Neutron, Deuteron, and Mercury EDMs from Supersymmetry without R parity
• Radiative B decays in Supersymmetry without R-parity
• Some Novel Contributions to Radiative B Decay in Supersymmetry without R-parity

Cited by in corpus (4)

• Comprehensive Analysis on Lepton Flavor Violating Higgs Boson to mu tau Decay in Supersymmetry without R Parity
• Higgs to mu tau Decay in Supersymmetry without R Parity
• Updating Bounds on $R$-Parity Violating Supersymmetry from Meson Oscillation Data
• R-Parity Violating Supersymmetry and the 125 GeV Higgs signals