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

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

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dc.contributor.author	Casas González, Alberto
dc.contributor.author	Moreno Moreno, Jesús M.
dc.contributor.author	Rius Dionis, Nuria
dc.contributor.author	Ruiz de Austri Bazán, Roberto
dc.contributor.author	Zaldívar, Bryan
dc.date.accessioned	2015-03-03T08:17:01Z
dc.date.available	2015-03-03T08:17:01Z
dc.date.issued	2011
dc.identifier.citation	Casas González, Alberto Moreno Moreno, Jesús M. Rius Dionis, Nuria Ruiz de Austri Bazán, Roberto Zaldívar, Bryan 2011 Fair scans of the seesaw. Consequences for predictions on LFV processes. Journal of High Energy Physics 2011 3 034
dc.identifier.uri	http://hdl.handle.net/10550/42570
dc.description.abstract	We 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(mu -> e, gamma) in supersymmetric seesaw models depends strongly on the value of theta(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(mu -> e, gamma) gets very insensitive to theta(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(mu -> e, gamma) are larger than the experimental upper bound. Including (unflavoured) leptogenesis does not introduce any further dependence on theta(13), although decreases the typical value of BR(mu -> e, gamma).
dc.language.iso	eng
dc.relation.ispartof	Journal of High Energy Physics, 2011, vol. 2011, num. 3, p. 034
dc.subject	Física
dc.title	Fair scans of the seesaw. Consequences for predictions on LFV processes.
dc.type	journal article	es_ES
dc.date.updated	2015-03-03T08:17:02Z
dc.identifier.doi	10.1007/JHEP03(2011)034
dc.identifier.idgrec	063281
dc.rights.accessRights	open access	es_ES