New Leptoquark Mechanism of Neutrinoless Double Beta Decay

Details New Leptoquark Mechanism of Neutrinoless Double Beta Decay New Leptoquark Mechanism of Neutrinoless Double Beta Decay

1996-03-04

arxiv.org/abs/hep-ph/9603213v1

Phys.Rev.D54:4207-4210,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 6 pages, 1 figure

Scientific paper

10.1103/PhysRevD.54.R4207

A new mechanism for neutrinoless double beta ($\znbb$) decay based on leptoquark exchange is discussed. Due to the specific helicity structure of the effective four-fermion interaction this contribution is strongly enhanced compared to the well-known mass mechanism of $\znbb$ decay. As a result the corresponding leptoquark parameters are severely constrained from non-observation of $\znbb$-decay. These constraints are more stringent than those derived from other experiments.

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