Suppression of lepton number violation mediated by ΔI = 0 mass fermions

F. del Aguila, M. J. Bowick

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

We add a lepton doublet with ΔI = 0 mass M to the minimal Weinberg-Salam model. We then calculate the transition rate for μ → eγ for all M as a function of an arbitrary mixing parameter δ of order a normal lepton mass. For δ {less-than or approximate} 0.4 GeV, M can be as low as 20 GeV. We show that heavy gDI = 0 fermions decouple throught their highly but naturally suppressed mixing angles with normal fermions and not through diagrammatic cancellations. Models with heavy ΔI = 0 fermions evade the commonly used conditions for natural suppression of rare processes in gauge theories.

Original languageEnglish (US)
Pages (from-to)144-150
Number of pages7
JournalPhysics Letters B
Volume119
Issue number1-3
DOIs
StatePublished - Dec 16 1982

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint Dive into the research topics of 'Suppression of lepton number violation mediated by ΔI = 0 mass fermions'. Together they form a unique fingerprint.

Cite this