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High Energy Physics - Phenomenology

arXiv:1503.04825 (hep-ph)
[Submitted on 16 Mar 2015 (v1), last revised 11 Sep 2015 (this version, v2)]

Title:Falsifying High-Scale Baryogenesis with Neutrinoless Double Beta Decay and Lepton Flavor Violation

Authors:Frank F. Deppisch, Julia Harz, Martin Hirsch, Wei-Chih Huang, Heinrich Päs
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Abstract:Interactions that manifest themselves as lepton number violating processes at low energies in combination with sphaleron transitions typically erase any preexisting baryon asymmetry of the Universe. In this article, we discuss the constraints obtained from an observation of neutrinoless double beta decay in this context. If a new physics mechanism of neutrinoless double beta decay other than the standard light neutrino exchange is observed, typical scenarios of high-scale baryogenesis will be excluded unless the baryon asymmetry is stabilized via some new mechanism. We also sketch how this conclusion can be extended beyond the first lepton generation by incorporating lepton flavor violating processes.
Comments: 5 pages, 2 figures; minor additions, matches published version
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)
Report number: LCTS/2015-05
Cite as: arXiv:1503.04825 [hep-ph]
  (or arXiv:1503.04825v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1503.04825
Journal reference: Phys. Rev. D 92, 036005 (2015)
Related DOI: https://doi.org/10.1103/PhysRevD.92.036005

Submission history

From: Julia Harz [view email]
[v1] Mon, 16 Mar 2015 20:04:08 UTC (78 KB)
[v2] Fri, 11 Sep 2015 18:12:31 UTC (81 KB)
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