Constraints on fourth generation Majorana neutrinos

Abstract

We investigate the possibility of a fourth sequential generation in the lepton sector. Assuming neutrinos to be Majorana particles and starting from a recent - albeit weak - evidence for a non-zero admixture of a fourth generation neutrino from fits to weak lepton and meson decays we discuss constraints from neutrinoless double beta decay, radiative lepton decay and like-sign di-lepton production at hadron colliders.

6 pages, Proceedings of the 16th International Symposium on Particles, Strings and Cosmology (PASCOS2010), Valencia (Spain), July 19th - 23rd, 2010

References in corpus (14)

• Precision Electroweak Measurements on the Z Resonance
• Searches for Lepton Flavor Violation in the Decays tau -> e gamma and tau -> mu gamma
• New Limit for the Family-Number Non-conserving Decay mu+ to e+_gamma
• Theoretical update of Bs-Bs-bar mixing
• Four Generations and Higgs Physics
• The Igex 76ge Neutrinoless Double-Beta Decay Experiment: Prospects for Next Generation Experiments
• Quarks and Leptons Beyond the Third Generation
• Four Statements about the Fourth Generation
• Double beta decay in left-right symmetric models
• Electroweak scale seesaw and heavy Dirac neutrino signals at LHC
• Majorana Neutrinos and Same-Sign Dilepton Production at LHC and in Rare Meson Decays
• The discovery of the fourth family at the LHC: what if?
• Minimal SU(5) Resuscitated by Long-Lived Quarks and Leptons
• Once more on extra quark-lepton generations and precision measurements

Cited by in corpus (6)

• Long Lived Fourth Generation and the Higgs
• An A_5 Model of Four Lepton Generations
• On the nature of the fourth generation neutrino and its implications
• Status of the Fourth Generation - A Brief Summary of B3SM-III Workshop in Four Parts
• Fourth Generation Majorana Neutrinos
• Neutrino Masses and a Fourth Generation of Fermions