Lepton number and flavour violation in TeV-scale left-right symmetric theories with large left-right mixing

By J. Barry, W. Rodejohann. 2013

148 citations recorded by the source corpus.

A bstractThe various diagrams leading to neutrinoless double beta decay in the left-right symmetric model have different relative magnitudes, depending on the scale of new physics. Neutrinos acquire mass from both type I and/or type II seesaw terms, making an unambiguous analysis difficult. We study the half-life for double beta decay in the case of type II and type I dominance, in the former case including interference terms. If the heavy neutrinos of the type I seesaw model are at the TeV scale, certain processes can be enhanced. In particular, there are regions of parameter space in which the so-called λ-and η-diagrams can give sizable contributions to the half-life for the decay. We perform a detailed study of one such scenario, paying careful attention to constraints from lepton flavour violation.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/f109c4121e3730b0e6475648203403b3e7a3f82c

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In Nuclear and High Energy Physics

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Citations in the corpus

• Neutrinoless double beta decay versus other probes of heavy sterile neutrinos (2019, methodology): “In this section we will first review the treatment of 0νββ decay in the presence of sterile neutrinos, having previously been covered in detail in the literature in the context of the type-I seesaw [21, 181], inverse and extended seesaws [182, 183] and left-right symmetric models [184–192].”
• Flavor structures of charged fermions and massive neutrinos (2019, methodology): “If one goes beyond the SM framework by incorporating the seesaw scenarios with some supersymmetric theories, for example, it will certainly be possible to achieve much richer phenomenology of lepton flavor violation in the charged-lepton sector [569, 583, 586, 587, 588, 589, 590, 591, 592, 593, 594,”
• Lepton Number Violation: Seesaw Models and Their Collider Tests (2017, background): “We emphasize that the discovery of TeV-scale LRSM could have profound implications on high-scale baryo- and leptogenesis [10, 389– 392] as well as searches for 0νββ [129, 162, 385, 393, 394].”
• Present and Future K and B Meson Mixing Constraints on TeV Scale Left-Right Symmetry (2014, background): “hr number of authors to investigate both direct and indirect signatures of a TeV scale RH gauge interaction as well as constraints from flavor changing processes [18–36].”