Neutrinoless Double Beta Decay: Low Left-Right Symmetry Scale?

Experiments in progress may confirm a nonzero neutrinoless double beta decay rate in conflict with the cosmological upper limit on neutrino masses and thus require new physics beyond the Standard Model. A natural candidate is the Left-Right symmetric theory, which led originally to neutrino mass and the seesaw mechanism. In the absence of cancelations of large Dirac Yukawa couplings, we show how such a scenario would require a low scale of Left-Right symmetry breaking roughly below 10 TeV, tantalizingly close to the LHC reach.

Titolo: Neutrinoless Double Beta Decay: Low Left-Right Symmetry Scale?
Autori: 
NESTI, FABRIZIO
mostra contributor esterni 
Data di pubblicazione: 2011
Abstract: Experiments in progress may confirm a nonzero neutrinoless double beta decay rate in conflict with the cosmological upper limit on neutrino masses and thus require new physics beyond the Standard Model. A natural candidate is the Left-Right symmetric theory, which led originally to neutrino mass and the seesaw mechanism. In the absence of cancelations of large Dirac Yukawa couplings, we show how such a scenario would require a low scale of Left-Right symmetry breaking roughly below 10 TeV, tantalizingly close to the LHC reach.
Handle: http://hdl.handle.net/11368/2900810
Appare nelle tipologie:7.12 Altro

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