On Nuclear Matrix Element Uncertainties in Short Range 0νββ Decay Neutrinoless Double Beta Decay
نویسنده
چکیده
The evaluation of short range contributions to neutrinoless double beta decay has been challenged due to critics of the ansatz of the nuclear matrix element calculations. We comment on the critics and uncertainties of these calculations and the effect on the derived limits. A Z+2 X + 2e − (1) has been proven to be one of the most sensitive tools to search for particle physics beyond the standard model. Besides the most stringent limit on the effective neutrino Majorana mass and neutrino-mediated contributions from R-parity violating SUSY and leptoquarks also contributions due to heavy particle exchange (superheavy neutrinos and SUSY partners) have been discussed, and extremely stringent constraints on the effective superheavy neutrino mass m H and R-parity violating coupling λ ′ 111 have been derived (for an overview and recent limits see [1, 2]):
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