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New Leptoquark Mechanism of Neutrinoless Double Beta Decay

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arxiv hep-ph/9603213 v1 pith:YCSVVCCD submitted 1996-03-04 hep-ph

M. Hirsch , H.V. Klapdor-Kleingrothaus , S.G. Kovalenko This is my paper · ORCID
classification hep-ph
keywords decayleptoquarkmechanismznbbbetadoubleneutrinolesscompared
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abstract

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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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Neutrinoless Double-Beta Decays from Operator Mixing

    hep-ph 2026-08 conditional novelty 6.0 of 10

    Renormalization-group mixing lets heavy-quark dimension-seven operators feed neutrinoless double-beta decay, giving some of the strongest current bounds on these new-physics operators.

  2. Positron-Emitting and Electron-Capturing Double-Beta Processes in the Standard Model and Beyond

    hep-ph 2026-06 unverdicted novelty 5.0 of 10

    Nuclear matrix elements and phase-space factors are computed for 2ν and 0ν positron-emitting double-beta modes in three isotopes, yielding sensitivity to SMEFT lepton-number-violating operators at 1-100 TeV and showin...

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