%0 Journal Article
%T Fair scans of the seesaw. Consequences for predictions on LFV processes
%A Casas, J. A.
%A Moreno, J. M.
%A Rius, N.
%A Ruiz de Austri, R.
%A Zaldivar, B.
%J Journal of High Energy Physics
%D 2011
%V 03
%N 3
%I Springer
%@ 1126-6708
%G English
%F Casas_etal2011
%O ISI:000289295200034
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=612), last updated on Fri, 06 May 2011 11:28:37 +0000
%X 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).
%K Neutrino Physics
%K Supersymmetric Standard Model
%R 10.1007/JHEP03(2011)034
%U http://arxiv.org/abs/arXiv:1010.5751
%U https://doi.org/10.1007/JHEP03(2011)034
%P 034-22pp