Common origin of nonzero θ13 and dark matter in an S4 flavor symmetric model with inverse seesaw mechanism

Common origin of nonzero θ13 and dark matter in an S4 flavor symmetric model with inverse seesaw... We study an inverse seesaw model of neutrino mass within the framework of S4 flavor symmetry from the requirement of generating nonzero reactor mixing angle θ13 along with correct dark matter relic abundance. The leading order S4 model gives rise to tribimaximal-type leptonic mixing, resulting in θ13=0. Nonzero θ13 is generated at one-loop level by extending the model with additional scalar and fermion fields which take part in the loop correction. The particles going inside the loop are odd under an in-built Z2Dark symmetry such that the lightest Z2Dark odd particle can be a dark matter candidate. Correct neutrino and dark matter phenomenology can be achieved for such one-loop corrections either to the light neutrino mass matrix or to the charged lepton mass matrix, although the latter case is found to be more predictive. The predictions for neutrinoless double beta decay are also discussed, and inverted hierarchy in the charged lepton correction case is found to be disfavored by the latest KamLAND-Zen data. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Common origin of nonzero θ13 and dark matter in an S4 flavor symmetric model with inverse seesaw mechanism

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Common origin of nonzero θ13 and dark matter in an S4 flavor symmetric model with inverse seesaw mechanism

Abstract

We study an inverse seesaw model of neutrino mass within the framework of S4 flavor symmetry from the requirement of generating nonzero reactor mixing angle θ13 along with correct dark matter relic abundance. The leading order S4 model gives rise to tribimaximal-type leptonic mixing, resulting in θ13=0. Nonzero θ13 is generated at one-loop level by extending the model with additional scalar and fermion fields which take part in the loop correction. The particles going inside the loop are odd under an in-built Z2Dark symmetry such that the lightest Z2Dark odd particle can be a dark matter candidate. Correct neutrino and dark matter phenomenology can be achieved for such one-loop corrections either to the light neutrino mass matrix or to the charged lepton mass matrix, although the latter case is found to be more predictive. The predictions for neutrinoless double beta decay are also discussed, and inverted hierarchy in the charged lepton correction case is found to be disfavored by the latest KamLAND-Zen data.
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Publisher
The American Physical Society
Copyright
Copyright © © 2017 American Physical Society
ISSN
1550-7998
eISSN
1550-2368
D.O.I.
10.1103/PhysRevD.96.015014
Publisher site
See Article on Publisher Site

Abstract

We study an inverse seesaw model of neutrino mass within the framework of S4 flavor symmetry from the requirement of generating nonzero reactor mixing angle θ13 along with correct dark matter relic abundance. The leading order S4 model gives rise to tribimaximal-type leptonic mixing, resulting in θ13=0. Nonzero θ13 is generated at one-loop level by extending the model with additional scalar and fermion fields which take part in the loop correction. The particles going inside the loop are odd under an in-built Z2Dark symmetry such that the lightest Z2Dark odd particle can be a dark matter candidate. Correct neutrino and dark matter phenomenology can be achieved for such one-loop corrections either to the light neutrino mass matrix or to the charged lepton mass matrix, although the latter case is found to be more predictive. The predictions for neutrinoless double beta decay are also discussed, and inverted hierarchy in the charged lepton correction case is found to be disfavored by the latest KamLAND-Zen data.

Journal

Physical Review DAmerican Physical Society (APS)

Published: Jul 1, 2017

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