Basis independent neutrino masses in the Rp violating minimal supersymmetric standard model

Sacha Davidson, Marta Losada

Research output: Contribution to journalArticlepeer-review


We calculate the neutrino mass matrix up to one loop order in the minimal supersymmetric standard model without R parity, including the bilinears in the mass insertion approximation. This introduces additional diagrams usually neglected in the literature. We systematically consider the possible new diagrams, and find a few missing from our previous work. We provide analytic expressions for the mass matrix elements in the neutrino flavor basis, which are independent of the Hd-Li basis choice in the Lagrangian. We compare the contributions from different diagrams, and make "Lagrangian-basis-independent" estimates of when the new diagrams need to be included. We briefly discuss the phenomenology of a toy model of bilinear R-parity violation.

Original languageEnglish (US)
Article number075025
Pages (from-to)750251-7502517
Number of pages6752267
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number7B
StatePublished - Apr 1 2002

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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