A Scan for Models of Neutrino Mixing from Non-Abelian Discrete Symmetries
| Autor: | Akin Wingerter, Krishnamohan Parattu |
|---|---|
| Přispěvatelé: | Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Vernay, Emmanuelle |
| Rok vydání: | 2011 |
| Předmět: |
Tribimaximal mixing
Physics Group (mathematics) Pontecorvo–Maki–Nakagawa–Sakata matrix FOS: Physical sciences Symmetry (physics) [PHYS.HPHE] Physics [physics]/High Energy Physics - Phenomenology [hep-ph] Standard Model (mathematical formulation) Theoretical physics High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] Homogeneous space Abelian group Mixing (physics) |
| Zdroj: | PoS-Proceedings of Science International Europhysics Conference on High Energy Physics (HEP 2011) International Europhysics Conference on High Energy Physics (HEP 2011), Jul 2011, Grenoble, France. pp.092 |
| DOI: | 10.48550/arxiv.1110.6762 |
| Popis: | The structure of the neutrino mixing matrix is indicative of an underlying family symmetry that interrelates the three generations of fermions in the Standard Model. We systematically scan the parameter space of 76 discrete non-Abelian family symmetries and construct all models with the Standard Model particle content and up to three flavon fields where we include non-renormalizable interactions of mass dimension five and six. We find that of the 76 groups that we considered, 44 groups can accommodate models that are consistent with experiment at 3sigma, and 38 groups can have models that are tribimaximal. One immediate consequence is that A4 is not "special", but should be considered on equal footing with other groups such as T7 that is the smallest group for which we find tribimaximal mixing, and T13 that has the largest fraction of TBM models. We present the details of a model with theta12=33.9, theta23=49.1, theta13=5.1 to show that a non-zero theta13 can easily be accommodated. Comment: Contribution to the proceedings of "The 2011 Europhysics Conference on High Energy Physics-HEP 2011", July 21-27, 2011, Grenoble, France |
| Databáze: | OpenAIRE |
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