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77 research outcomes, page 4 of 8
  • publication . Preprint . Other literature type . Article . 2016
    Open Access English
    Authors:
    Bari, Pasquale Di; Ludl, Patrick Otto; Palomares-Ruiz, Sergio;
    Project: FCT | PEst-OE/FIS/UI0777/2013 (132985), EC | ELUSIVES (674896), RCUK | Exploring the limits of t... (ST/L000296/1), EC | InvisiblesPlus (690575)

    We revisit a model in which neutrino masses and mixing are described by a two right-handed (RH) neutrino seesaw scenario, implying a strictly hierarchical light neutrino spectrum. A third decoupled RH neutrino, $N_{\rm DM}$ with mass $M_{\rm DM}$, plays the role of cold...

  • publication . Article . Preprint . 2018
    Open Access English
    Authors:
    Stephen F. King; George K. Leontaris; Miguel Crispim Romão;
    Project: RCUK | Exploring the limits of t... (ST/L000296/1), EC | ELUSIVES (674896), EC | InvisiblesPlus (690575)

    We make a first systematic study of non-universal TeV scale neutral gauge bosons $Z'$ arising naturally from a class of F-theory inspired models broken via $SU(5)$ by flux. The phenomenological models we consider may originate from semi-local F-theory GUTs arising from ...

  • publication . Article . Preprint . 2019
    Open Access
    Authors:
    Stephen F. King; Ivo de Medeiros Varzielas;
    Publisher: American Physical Society (APS)
    Project: RCUK | Exploring the limits of t... (ST/L000296/1), FCT | UID/FIS/00777/2013 (147214), EC | InvisiblesPlus (690575), EC | ELUSIVES (674896)

    We propose a model in which the Yukawa couplings of Higgs doublets are related to the couplings of the chiral fermions to a scalar leptoquark triplet. This is due to their common origin via mixing with a vector-like family distinguished by a discrete $Z_5$ symmetry, und...

  • publication . Preprint . Article . 2018
    Open Access English
    Authors:
    Francisco J. de Anda; Stephen F. King;
    Project: RCUK | Exploring the limits of t... (ST/L000296/1), EC | ELUSIVES (674896), EC | InvisiblesPlus (690575)

    Comment: 23 pages, 6 figures. v3: Version published in JHEP

  • publication . Preprint . 2019
    Open Access English
    Authors:
    King, Stephen F;
    Project: RCUK | Exploring the limits of t... (ST/L000296/1), EC | ELUSIVES (674896), EC | InvisiblesPlus (690575)

    Although the measurement of the reactor angle has killed tribimaximal lepton mixing, its descendants survive with charged lepton corrections, or in less constrained forms such as trimaximal mixing and/or mu-tau symmetry, each with characteristic predictions. Such patter...

  • publication . Article . Other literature type . Preprint . 2018
    Open Access English
    Authors:
    Adam Falkowski; Elena Perdomo; Mathias Pierre; Stephen F. King;
    Publisher: HAL CCSD
    Project: RCUK | Exploring the limits of t... (ST/L000296/1), EC | ELUSIVES (674896), EC | InvisiblesPlus (690575)

    International audience; We discuss a flavourful Z′ portal model with a coupling to fourth-family singlet Dirac neutrino dark matter. In the absence of mixing, the Z′ is fermiophobic, having no couplings to the three chiral families, but does couple to a fourth vector-li...

  • publication . Article . Preprint . 2019
    Open Access English
    Authors:
    A. E. Cárcamo Hernández; Stephen F. King;
    Project: RCUK | Exploring the limits of t... (ST/L000296/1), EC | ELUSIVES (674896), EC | InvisiblesPlus (690575)

    Comment: 38 pages, 3 figures. Published version

  • publication . Preprint . 2019
    Open Access English
    Authors:
    Varzielas, Ivo de Medeiros; Levy, Miguel; Zhou, Ye-Ling;
    Project: RCUK | Exploring the limits of t... (ST/L000296/1), FCT | UID/FIS/00777/2013 (147214), EC | ELUSIVES (674896), EC | InvisiblesPlus (690575)

    We explore the concept of effective alignments: contractions of multiple flavour symmetry breaking flavon fields. These contractions give rise to directions that are hard or impossible to obtain directly by breaking the flavour symmetry. Within this context, and using $...

  • publication . Preprint . Article . Other literature type . 2019
    Open Access English
    Authors:
    Xiang-Gan Liu; Stephen F. King; Gui-Jun Ding; Jun-Nan Lu;
    Project: EC | ELUSIVES (674896), RCUK | Exploring the limits of t... (ST/L000296/1), EC | InvisiblesPlus (690575)

    In the modular symmetry approach to neutrino models, the flavour symmetry emerges as a finite subgroup $\Gamma_N$ of the modular symmetry, broken by the vacuum expectation value (VEV) of a modulus field $\tau$. If the VEV of the modulus $\tau$ takes some special value, ...

  • publication . Preprint . 2020
    Open Access English
    Authors:
    Balaji, Shyam; Ramirez-Quezada, Maura; Zhou, Ye-Ling;
    Project: EC | InvisiblesPlus (690575), EC | ELUSIVES (674896), RCUK | Exploring the limits of t... (ST/L000296/1)

    Comment: 15 pages, 3 figures

77 research outcomes, page 4 of 8