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          Institute: MPI für Physik     Collection: MPI für Physik     Display Documents



ID: 544459.0, MPI für Physik / MPI für Physik
$\mu \to e \gamma$ and $\tau \to l \gamma$ decays in the fermion triplet seesaw model
Authors:Abada, A.; Biggio, C.; Bonnet, F.; Gavela, M. B.; Hambye, T.
Date of Publication (YYYY-MM-DD):2008
Title of Journal:Physical Review D
Journal Abbrev.:Phys.Rev.D
Issue / Number:78
Start Page:033007
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:In the framework of the seesaw models with triplets of fermions, we evaluate the decay rates of $\mu \to e \gamma$ and $\tau \to l \gamma$ transitions. We show that although, due to neutrino mass constraints, those rates are in general expected to be well under the present experimental limits, this is not necessarily always the case. Interestingly enough, the observation of one of those decays in planned experiments would nevertheless contradict bounds stemming from present experimental limits on the $\mu \to eee$ and $\tau \to 3 l$ decay rates. Such detection of radiative decays would therefore imply that there exist sources of lepton flavour violation not associated to triplet fermions.
Classification / Thesaurus:Phenomenology of High Energy Physics
Comment of the Author/Creator:Section on $\mu$-$e$ conversion in nuclei added, version to appear in PRD
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2008-11
URL:http://www.slac.stanford.edu/spires/find/hep/www?r...
URL:http://arxiv.org/PS_cache/arxiv/pdf/0803/0803.0481...
URL:http://arXiv.org/abs/arxiv:0803.0481
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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