Charged Lepton Flavor-violating Transitions in Color Octet Model

Abstract

We study charged lepton flavor-violating (LFV) transitions in the color octet model that generates neutrino mass and lepton mixing at one loop. By taking into account neutrino oscillation data and assuming octet particles of TeV scale mass, we examine the feasibility to detect these transitions in current and future experiments. We find that for general values of parameters the branching ratios for LFV decays of the Higgs and $Z$ bosons are far below current and even future experimental bounds. For LFV transitions of the muon, the present bounds can be satisfied generally, while future sensitivities could distinguish between the singlet and triplet color-octet fermions. The triplet case could be ruled out by future $\mu -e$ conversion in nuclei, and for the singlet case the conversion and the decays $\mu \to 3e,e\gamma$ play complementary roles in excluding relatively low mass regions of the octet particles.

arXiv commentv1: 18 pages, 11 figures, 2 tables; v2: added one ref and corrected a typo, with no other changes

References in corpus (19)

• Oscillating neutrinos and mu --> e, gamma
• Lepton-Flavor Violation via Right-Handed Neutrino Yukawa Couplings in Supersymmetric Standard Model
• Searches for Lepton Flavor Violation in the Decays tau -> e gamma and tau -> mu gamma
• Search for Lepton Flavor Violating Tau Decays into Three Leptons with 719 Million Produced Tau+Tau- Pairs
• Status of three-neutrino oscillation parameters, circa 2013
• The Physics of the B Factories
• Detailed calculation of lepton flavor violating muon-electron conversion rate for various nuclei
• Lepton-Flavor Violation in the Supersymmetric Standard Model with Seesaw-Induced Neutrino Masses
• Flavor Changing Neutral Currents, an Extended Scalar Sector, and the Higgs Production Rate at the LHC
• On the model discriminating power of mu -> e conversion in nuclei
• Search for pair-produced resonances decaying to jet pairs in proton-proton collisions at sqrt(s) = 8 TeV
• SUSY Simplified Models at 14, 33, and 100 TeV Proton Colliders
• Lepton flavor violation in the triplet Higgs model
• On the Origin of Neutrino Masses
• Lepton flavour violation in The Little Higgs model
• Unification of Gauge Couplings in Radiative Neutrino Mass Models
• Lepton Number and Lepton Flavor Violation through Color Octet States
• Lepton Number Violation from Colored States at the LHC
• Radiative and flavor-violating transitions of leptons from interactions with color-octet particles

Cited by in corpus (2)

• From the trees to the forest: a review of radiative neutrino mass models
• Naturally Small Dirac Neutrino Mass with Intermediate $SU(2{)}_L$ Multiplet Fields