Fair scans of the seesaw. Consequences for predictions on LFV processes

22 páginas, 5 figuras.-- El Pdf es la versión pre-print: arXiv:1010.5751v1

Bibliographic Details
Authors: Casas, Alberto, Moreno, Jesús M., Rius, Nuria, Ruiz de Austri, Roberto, Zaldívar, Bryan
Format: article
Publication Date:2011
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/41745
Online Access:http://hdl.handle.net/10261/41745
Access Level:Open access
Keyword:Neutrino Physics
Supersymmetric standard model
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spelling Fair scans of the seesaw. Consequences for predictions on LFV processesCasas, AlbertoMoreno, Jesús M.Rius, NuriaRuiz de Austri, RobertoZaldívar, BryanNeutrino PhysicsSupersymmetric standard model22 páginas, 5 figuras.-- El Pdf es la versión pre-print: arXiv:1010.5751v1We give a straightforward procedure to scan the seesaw parameter-space, using the common “R-parametrization”, in a complete way. This includes a very simple rule to incorporate the perturbativity requirement as a condition for the entries of the R-matrix. As a relevant application, we show that the somewhat propagated belief that BR(μ → e, γ) in supersymmetric seesaw models depends strongly on the value of θ 13 is an “optical effect” produced by incomplete scans, and does not hold after a careful analytical and numerical study. When the complete scan is done, BR(μ → e, γ) gets very insensitive to θ 13. This holds even if the right-handed neutrino masses are kept constant or under control (as is required for succesful leptogenesis). In most cases the values of BR(μ → e, γ) are larger than the experimental upper bound. Including (unflavoured) leptogenesis does not introduce any further dependence on θ 13, although decreases the typical value of BR(μ → e, γ).This work has been partially supported by the MICINN, Spain, under contracts FPA-2007-60252 and FPA-2007-60323; Consolider- Ingenio PAU CSD2007-00060 and MULTIDARK CSD2009-00064. We thank as well the Generalitat Valenciana grants PROMETEO/2009/116 and PROMETEO/2008/069; the Comunidad de Madrid through Proyecto HEPHACOS ESP-1473 and the European Commission under contract PITN-GA-2009-237920. B. Zaldívar acknowledges the fi nancial support of a FPI (MICINN) grant, with reference BES-2008-004688.Peer reviewedSpringer NatureInstitute of Physics Publishing201120112011info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/41745reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1007/JHEP03(2011)034info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/417452026-05-22T06:33:51Z
dc.title.none.fl_str_mv Fair scans of the seesaw. Consequences for predictions on LFV processes
title Fair scans of the seesaw. Consequences for predictions on LFV processes
spellingShingle Fair scans of the seesaw. Consequences for predictions on LFV processes
Casas, Alberto
Neutrino Physics
Supersymmetric standard model
title_short Fair scans of the seesaw. Consequences for predictions on LFV processes
title_full Fair scans of the seesaw. Consequences for predictions on LFV processes
title_fullStr Fair scans of the seesaw. Consequences for predictions on LFV processes
title_full_unstemmed Fair scans of the seesaw. Consequences for predictions on LFV processes
title_sort Fair scans of the seesaw. Consequences for predictions on LFV processes
dc.creator.none.fl_str_mv Casas, Alberto
Moreno, Jesús M.
Rius, Nuria
Ruiz de Austri, Roberto
Zaldívar, Bryan
author Casas, Alberto
author_facet Casas, Alberto
Moreno, Jesús M.
Rius, Nuria
Ruiz de Austri, Roberto
Zaldívar, Bryan
author_role author
author2 Moreno, Jesús M.
Rius, Nuria
Ruiz de Austri, Roberto
Zaldívar, Bryan
author2_role author
author
author
author
dc.subject.none.fl_str_mv Neutrino Physics
Supersymmetric standard model
topic Neutrino Physics
Supersymmetric standard model
description 22 páginas, 5 figuras.-- El Pdf es la versión pre-print: arXiv:1010.5751v1
publishDate 2011
dc.date.none.fl_str_mv 2011
2011
2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/41745
url http://hdl.handle.net/10261/41745
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1007/JHEP03(2011)034
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer Nature
Institute of Physics Publishing
publisher.none.fl_str_mv Springer Nature
Institute of Physics Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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