Neutrinoless double {beta} decay with composite neutrinos

Journal Article · Sat Nov 01 04:00:00 EST 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.56.5766· OSTI ID:365343

Panella, O; Srivastava, Y N ^[1]; Carimalo, C ^[2]; Widom, A ^[3]

---

1. Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, Via A. Pascoli, I-06123 Perugia (Italy)
2. Laboratoire de Physique Corpusculaire, College de France, 11 Place Marcelin Berthelot, F-75231, Paris Cedex 05 (France)
3. Physics Department, Northeastern University, Boston, Massachusetts 02115 (United States)

We study in detail the contribution of heavy composite Majorana neutrinos to neutrinoless double beta decay (0{nu}{beta}{beta}). Our analysis confirms the result of a previous estimate by two of the authors. Excited neutrinos couple to the electroweak gauge bosons through a magnetic-type effective Lagrangian. The relevant nuclear matrix element is related to matrix elements available in the literature and current bounds on the half-life of 0{nu}{beta}{beta} are converted into bounds on the compositeness scale and/or the heavy neutrino mass. Our bounds are of the same order of magnitude as those available from accelerator experiments. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 365343
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 56; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COMPOSITE MODELS
DOUBLE BETA DECAY
HALF-LIFE
LAGRANGIAN FIELD THEORY
LAGRANGIAN FUNCTION
MAJORANA THEORY
MASS
MATRIX ELEMENTS
NEUTRINOS