Scotogenic cobimaximal Dirac neutrino mixing from ∆ (27 ) and U (1_{) χ}
Abstract
In the context of S U (3_{) C}×S U (2_{) L}×U (1_{) Y}×U (1_{) χ} , where U (1_{) χ} comes from S O (10 ) →S U (5 ) ×U (1_{) χ} , supplemented by the nonAbelian discrete ∆ (27 ) symmetry for three lepton families, Dirac neutrino masses and their mixing are radiatively generated through dark matter. The gauge U (1_{) χ} symmetry is broken spontaneously. The discrete ∆ (27 ) symmetry is broken softly and spontaneously. Together, they result in two residual symmetries, a global U (1_{) L} lepton number and a dark symmetry, which may be Z_{2}, Z_{3}, or U (1_{) D} depending on what scalar breaks U (1_{) χ} . Cobimaximal neutrino mixing, i.e. θ_{13}≠0 , θ_{23}=π /4 , and δ_{CP}=±π /2 , may also be obtained.
 Publication:

European Physical Journal C
 Pub Date:
 November 2019
 DOI:
 10.1140/epjc/s100520197440x
 arXiv:
 arXiv:1905.01535
 Bibcode:
 2019EPJC...79..903M
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 11 pages, 1 figure, ref. added