Pion dominance in RPV SUSY induced neutrinoless double beta decay

Details Pion dominance in RPV SUSY induced neutrinoless double beta decay Pion dominance in RPV SUSY induced neutrinoless double beta decay

2007-10-17

arxiv.org/abs/0710.3199v2

Phys.Rev.D77:113012,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 1 figure. Minor corrections, several comments and references added

Scientific paper

10.1103/PhysRevD.77.113012

At the quark level there are basically two types of contributions of R-parity violating SUSY (RPV SUSY) to neutrinoless double beta decay: the short-range contribution involving only heavy virtual superpartners and the long-range one with the virtual squark and neutrino. Hadronization of the effective operators, corresponding to these two types of contributions, may in general involve virtual pions in addition to the close on-mass-shell nucleons. It is known that the short-range contribution is dominated by the pion exchange. In the present paper we show that this is also true for the long-range RPV SUSY contribution and, therefore, the RPV SUSY contributes to the neutrinoless double beta decay dominantly via charged pion exchange between the decaying nucleons.

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