Novel constraints on [Formula Presented] interactions from neutrino masses

Francesca Borzumati, Jae Sik Lee

Research output: Contribution to journalArticle

Abstract

We reanalyze the constraints imposed on lepton-number violating interactions by radiative contributions to neutrino masses at the one- and two-loop levels in supersymmetric models without R parity. The interactions considered are the (Formula presented) superpotential operators (Formula presented) and (Formula presented) and the (Formula presented) soft terms (Formula presented) and (Formula presented) The two-loop contributions analyzed are those induced by the radiatively generated mass splitting between the (Formula presented)-even and (Formula presented)-odd sneutrino states. It is shown how the constraints on the couplings (Formula presented) and (Formula presented) coming from the one-loop analysis can be evaded. In such a case, the two-loop contributions to neutrino masses become important. The combined one- and two-loop analysis yields constraints on the couplings (Formula presented) and (Formula presented) that are rather difficult to escape. The two-loop analysis yields also constraints on (Formula presented) and (Formula presented) which are not bounded at the one-loop level. More freedom remains for the couplings (Formula presented) (Formula presented) and (Formula presented) (Formula presented) when j and k are first- or second-generation indices.

Original languageEnglish
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume66
Issue number11
DOIs
Publication statusPublished - 2002 Jan 1
Externally publishedYes

Fingerprint

neutrinos
interactions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

@article{c4e5262053f74da28b15e4a8f9818cfd,
title = "Novel constraints on [Formula Presented] interactions from neutrino masses",
abstract = "We reanalyze the constraints imposed on lepton-number violating interactions by radiative contributions to neutrino masses at the one- and two-loop levels in supersymmetric models without R parity. The interactions considered are the (Formula presented) superpotential operators (Formula presented) and (Formula presented) and the (Formula presented) soft terms (Formula presented) and (Formula presented) The two-loop contributions analyzed are those induced by the radiatively generated mass splitting between the (Formula presented)-even and (Formula presented)-odd sneutrino states. It is shown how the constraints on the couplings (Formula presented) and (Formula presented) coming from the one-loop analysis can be evaded. In such a case, the two-loop contributions to neutrino masses become important. The combined one- and two-loop analysis yields constraints on the couplings (Formula presented) and (Formula presented) that are rather difficult to escape. The two-loop analysis yields also constraints on (Formula presented) and (Formula presented) which are not bounded at the one-loop level. More freedom remains for the couplings (Formula presented) (Formula presented) and (Formula presented) (Formula presented) when j and k are first- or second-generation indices.",
author = "Francesca Borzumati and Lee, {Jae Sik}",
year = "2002",
month = "1",
day = "1",
doi = "10.1103/PhysRevD.66.115012",
language = "English",
volume = "66",
journal = "Physical review D: Particles and fields",
issn = "1550-7998",
publisher = "American Institute of Physics Publising LLC",
number = "11",

}

TY - JOUR

T1 - Novel constraints on [Formula Presented] interactions from neutrino masses

AU - Borzumati, Francesca

AU - Lee, Jae Sik

PY - 2002/1/1

Y1 - 2002/1/1

N2 - We reanalyze the constraints imposed on lepton-number violating interactions by radiative contributions to neutrino masses at the one- and two-loop levels in supersymmetric models without R parity. The interactions considered are the (Formula presented) superpotential operators (Formula presented) and (Formula presented) and the (Formula presented) soft terms (Formula presented) and (Formula presented) The two-loop contributions analyzed are those induced by the radiatively generated mass splitting between the (Formula presented)-even and (Formula presented)-odd sneutrino states. It is shown how the constraints on the couplings (Formula presented) and (Formula presented) coming from the one-loop analysis can be evaded. In such a case, the two-loop contributions to neutrino masses become important. The combined one- and two-loop analysis yields constraints on the couplings (Formula presented) and (Formula presented) that are rather difficult to escape. The two-loop analysis yields also constraints on (Formula presented) and (Formula presented) which are not bounded at the one-loop level. More freedom remains for the couplings (Formula presented) (Formula presented) and (Formula presented) (Formula presented) when j and k are first- or second-generation indices.

AB - We reanalyze the constraints imposed on lepton-number violating interactions by radiative contributions to neutrino masses at the one- and two-loop levels in supersymmetric models without R parity. The interactions considered are the (Formula presented) superpotential operators (Formula presented) and (Formula presented) and the (Formula presented) soft terms (Formula presented) and (Formula presented) The two-loop contributions analyzed are those induced by the radiatively generated mass splitting between the (Formula presented)-even and (Formula presented)-odd sneutrino states. It is shown how the constraints on the couplings (Formula presented) and (Formula presented) coming from the one-loop analysis can be evaded. In such a case, the two-loop contributions to neutrino masses become important. The combined one- and two-loop analysis yields constraints on the couplings (Formula presented) and (Formula presented) that are rather difficult to escape. The two-loop analysis yields also constraints on (Formula presented) and (Formula presented) which are not bounded at the one-loop level. More freedom remains for the couplings (Formula presented) (Formula presented) and (Formula presented) (Formula presented) when j and k are first- or second-generation indices.

UR - http://www.scopus.com/inward/record.url?scp=85038302151&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85038302151&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.66.115012

DO - 10.1103/PhysRevD.66.115012

M3 - Article

AN - SCOPUS:85038302151

VL - 66

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 11

ER -