Threshold effects on renormalization group running of neutrino parameters in the low-scale seesaw model
2011 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 698, no 4, 297-305 p.Article in journal (Refereed) Published
We show that, in the low-scale type-I seesaw model, renormalization group running of neutrino parameters may lead to significant modifications of the leptonic mixing angles in view of so-called seesaw threshold effects. Especially, we derive analytical formulas for radiative corrections to neutrino parameters in crossing the different seesaw thresholds, and show that there may exist enhancement factors efficiently boosting the renormalization group running of the leptonic mixing angles. We find that, as a result of the seesaw threshold corrections to the leptonic mixing angles, various flavor symmetric mixing patterns (e.g., bi-maximal and tri-bimaximal mixing patterns) can be easily accommodated at relatively low energy scales, which is well within the reach of running and forthcoming experiments (e.g., the LHC).
Place, publisher, year, edition, pages
Elsevier B.V. , 2011. Vol. 698, no 4, 297-305 p.
Renormalization group equations, Threshold effects, TeV seesaw models
IdentifiersURN: urn:nbn:se:kth:diva-33701DOI: 10.1016/j.physletb.2011.03.028ISI: 000290077000007ScopusID: 2-s2.0-79953161892OAI: oai:DiVA.org:kth-33701DiVA: diva2:418375
FunderSwedish Research Council, 621-2008-4210
QC 201105232011-09-262011-05-162013-08-30Bibliographically approved