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  Neutrino mass and μ → e + γ from a mini-seesaw

Duerr, M., George, D. P., & McDonald, K. L. (2011). Neutrino mass and μ → e + γ from a mini-seesaw. Journal of high energy physics: JHEP, JHEP07: 103. doi:10.1007/JHEP07(2011)103.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-1297-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-129E-E
Genre: Journal Article

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http://arxiv.org/abs/1105.0593v2 (Preprint)
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 Creators:
Duerr, Michael1, Author              
George, Damien P.2, Author
McDonald, Kristian L.1, Author              
Affiliations:
1Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society, ou_904549              
2Nikhef Theory Group, Science Park 105, 1098 XG Amsterdam, The Netherlands, ou_persistent22              

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 Abstract: The recently proposed “mini-seesaw mechanism” combines naturally suppressed Dirac and Majorana masses to achieve light Standard Model neutrinos via a lowscale seesaw. A key feature of this approach is the presence of multiple light (order GeV) sterile-neutrinos that mix with the Standard Model. In this work we study the bounds on these light sterile-neutrinos from processes like μ → e + γ, invisible Z-decays, and neutrinoless double beta-decay. We show that viable parameter space exists and that, interestingly, key observables can lie just below current experimental sensitivities. In particular, a motivated region of parameter space predicts a μ → e + γ branching fraction within the range to be probed by MEG.

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 Dates: 2011-072011-07
 Publication Status: Published in print
 Pages: 28
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000293741500039
DOI: 10.1007/JHEP07(2011)103
 Degree: -

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Title: Journal of high energy physics : JHEP
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Springer
Pages: - Volume / Issue: JHEP07 Sequence Number: 103 Start / End Page: - Identifier: ISSN: 1126-6708
CoNE: https://pure.mpg.de/cone/journals/resource/111021927548002