Inverse neutrinoless double beta decay revisited: Neutrinos, Higgs triplets, and a muon collider

2010/05/17 by Werner Rodejohann · 36 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Double beta decay #Higgs boson #Inverse #MAJORANA #Muon #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Seesaw mechanism #hep-ex #hep-ph

paper · pdf · doi:10.1103/physrevd.81.114001

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 81(11) (American Physical Society) · 19 pages, 6 figures

arxiv created 2010/05/17 · openalex publication_date 2010/06/01 · arxiv updated 2015/03/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We revisit the process of inverse neutrinoless double beta decay (e^\ensuremath-e^\ensuremath-\ensuremath→W^\ensuremath-W^\ensuremath-) at future linear colliders. The cases of Majorana neutrino and Higgs triplet exchange are considered. We also discuss the processes e^\ensuremath-\ensuremathμ^\ensuremath-\ensuremath→W^\ensuremath-W^\ensuremath- and \ensuremathμ^\ensuremath-\ensuremathμ^\ensuremath-\ensuremath→W^\ensuremath-W^\ensuremath-, which are motivated by the possibility of muon colliders. For heavy neutrino exchange, we show that masses up to 10⁶ (10⁵) GeV could be probed for ee and e\ensuremathμ machines, respectively. The stringent limits for mixing of heavy neutrinos with muons render \ensuremathμ^\ensuremath-\ensuremathμ^\ensuremath-\ensuremath→W^\ensuremath-W^\ensuremath- less promising, even though this process is not constrained by limits from neutrinoless double beta decay. If Higgs triplets are responsible for inverse neutrinoless double beta decay, observable signals are only possible if a very narrow resonance is met. We also consider unitarity aspects of the process in case both Higgs triplets and neutrinos are exchanged. An exact seesaw relation connecting low energy data with heavy neutrino and triplet parameters is found.

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