Light sterile neutrino and low scale left-right symmetry in a D-brane inspired S U ( 4 ) C × S U ( 2 ) L × S U ( 2 ) R model

Leontaris, George K.; Shafi, Qaisar

doi:10.1103/PhysRevD.99.035032

Title: Light sterile neutrino and low scale left-right symmetry in a D-brane inspired $S U (4)_{C} \times S U (2)_{L} \times S U (2)_{R}$ model

Journal Article · Wed Feb 20 00:00:00 EST 2019 · Physical Review. D.

DOI:https://doi.org/10.1103/PhysRevD.99.035032· OSTI ID:1495233

Leontaris, George K.; Shafi, Qaisar

Motivated by the ongoing searches for new physics at the LHC, we explore the low energy consequences of a D-brane inspired SU(4)_C × SU(2)_L × SU(2)_R (4-2-2) model. The Higgs sector consists of an SU(4) adjoint, a pair H + H¯ in (4,1,2) + (4¯,1,2), and a bidoublet field in h(1,2,2). With the SU(4) adjoint, the symmetry breaks to a left-right symmetric SU(3)_C × U(1)_B–L × SU(2)_L× SU(2)_R model. A missing partner mechanism protects the SU(2)_R Higgs doublets in H, H¯, which subsequently break this latter symmetry at around to 10⁴ – 10⁶ GeV to the Standard Model. An inverse seesaw mechanism generates masses for the observed neutrinos and also yields a keV sterile neutrino that can play the role of dark matter if its mass lies in the keV range. Other phenomenological implications, including proton decay, are briefly discussed.

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Research Organization:: Univ. of Delaware, Newark, DE (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: SC0013880

OSTI ID:: 1495233

Alternate ID(s):: OSTI ID: 1612040; OSTI ID: 1656796

Journal Information:: Physical Review. D., Journal Name: Physical Review. D. Vol. 99 Journal Issue: 3; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Title: Light sterile neutrino and low scale left-right symmetry in a D-brane inspired S U ( 4 ) C × S U ( 2 ) L × S U ( 2 ) R model

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Title: Light sterile neutrino and low scale left-right symmetry in a D-brane inspired $S U (4)_{C} \times S U (2)_{L} \times S U (2)_{R}$ model