Reference : Radiative accidental matter
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/201609
Radiative accidental matter
English
Da Silva Simoes, Catarina mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Inter. fondamentales en physique et astrophysique (IFPA) >]
Aristizabal Sierra, Diego mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Inter. fondamentales en physique et astrophysique (IFPA) >]
Wegman Ostrosky, Daniel mailto [Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Inter. fondamentales en physique et astrophysique (IFPA) >]
Jul-2016
Journal of High Energy Physics [=JHEP]
Institute of Physics Publishing (IOP)
Yes (verified by ORBi)
International
1126-6708
1029-8479
Bristol
United Kingdom
[en] Beyond Standard Model ; Neutrino Physics
[en] Accidental matter models are scenarios where the beyond-the-standard model physics preserves all the standard model accidental and approximate symmetries up to a cutoff scale related with lepton number violation. We study such scenarios assuming that the new physics plays an active role in neutrino mass generation, and show that this unavoidably leads to radiatively induced neutrino masses. We systematically classify all possible models and determine their viability by studying electroweak precision data, bigbang nucleosynthesis and electroweak perturbativity, fi nding that the latter places the most stringent constraints on the mass spectra. These results allow the identi fication of minimal radiative accidental matter models for which perturbativity is lost at high scales. We calculate radiative charged-lepton flavor violating processes in these setups, and show that mu -> e gamma has a rate well within MEG sensitivity provided the lepton-number violating scale is at or below 5 105 GeV, a value (naturally) assured by the radiative suppression mechanism. Sizeable tau -> mu gamma branching fractions within SuperKEKB sensitivity are possible for lower lepton-number breaking scales. We thus point out that these scenarios can be tested not only in direct searches but also in lepton flavor-violating experiments.
http://hdl.handle.net/2268/201609
10.1007/JHEP07(2016)124

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