On neutrino masses in the MSSM with BRpV

One-loop corrections to the neutrino mass matrix within the MSSM with bilinear R-parity violation are calculated, paying attention to the approach in which an effective 3×3 neutrino mass matrix is used. The full mass matrix is block-diagonalized, it is found that second and third order terms can be...

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Bibliographic Details
Published inNuclear physics. B Vol. 887; no. C; pp. 338 - 357
Main Authors Díaz, Marco A., Rivera, Maximiliano A., Rojas, Nicolás
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.10.2014
Elsevier
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Summary:One-loop corrections to the neutrino mass matrix within the MSSM with bilinear R-parity violation are calculated, paying attention to the approach in which an effective 3×3 neutrino mass matrix is used. The full mass matrix is block-diagonalized, it is found that second and third order terms can be numerically important, and this is analytically understood. Top–stop loops do not contribute to the effective 3×3 approach at the first order, nevertheless they contribute at the third. An improved 3×3 approach that includes these effects is proposed. A scan over parameter space is made supporting the conclusions.
ISSN:0550-3213
1873-1562
DOI:10.1016/j.nuclphysb.2014.08.012