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PublicationsOpen AccessELUSIVESExploring the limits of the standa...PT
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12 research outcomes, page 1 of 2
  • publication . Article . Preprint . 2017
    Minima of multi-Higgs potentials with triplets of Δ(3n2) and Δ(6n2)
    Open Access English
    Authors:
    Stephen F. King; Christoph Luhn; Ivo de Medeiros Varzielas; Ivo de Medeiros Varzielas; Thomas Neder; Thomas Neder;
    doi: 10.1016/j.physletb.2017.11.005
    Project: RCUK | Exploring the limits of t... (ST/L000296/1), EC | SIFT (327195), EC | ELUSIVES (674896), EC | InvisiblesPlus (690575)

    Comment: 15 pages

  • publication . Article . Preprint . 2018
    {R}_{K^{(*)}} with leptoquarks and the origin of Yukawa couplings
    Open Access English
    Authors:
    Ivo de Medeiros Varzielas; Stephen F. King;
    doi: 10.1007/jhep11(2018)100
    Project: FCT | UID/FIS/00777/2013 (147214), RCUK | Exploring the limits of t... (ST/L000296/1), EC | ELUSIVES (674896), EC | InvisiblesPlus (690575)

    We construct a model where the Yukawa couplings of the Standard Model (SM) fermions arise from the breaking of a $Z_2$ symmetry and through mixing with a fourth family of vector-like fermions. By adding a scalar leptoquark, which is an electroweak triplet and odd under ...

  • publication . Article . Preprint . Other literature type . 2018
    Dark side of the Seesaw
    Open Access English
    Authors:
    Biswajit Karmakar; Biswajit Karmakar; Stephen F. King; Ivo de Medeiros Varzielas; Ivo de Medeiros Varzielas; Arunansu Sil; Subhaditya Bhattacharya;
    doi: 10.1007/jhep12(2018)007
    Publisher: SpringerOpen
    Project: RCUK | Exploring the limits of t... (ST/L000296/1), FCT | UID/FIS/00777/2013 (147214), EC | InvisiblesPlus (690575), EC | ELUSIVES (674896)

    In an attempt to unfold (if any) a possible connection between two apparently uncorrelated sectors, namely neutrino and dark matter, we consider the type-I seesaw and a fermion singlet dark matter to start with. Our construction suggests that there exists a scalar field...

  • publication . Article . Preprint . 2016
    Neutrino mass from M Theory SO(10)
    Open Access English
    Authors:
    Chakrit Pongkitivanichkul; Miguel Crispim Romão; Bobby Samir Acharya; Bobby Samir Acharya; Krzysztof Bożek; Stephen F. King;
    doi: 10.1007/jhep11(2016)173
    Project: RCUK | Symmetry, supersymmetry, ... (ST/J002798/1), RCUK | Exploring the limits of t... (ST/L000296/1), FCT | SFRH/BD/84234/2012 (SFRH/BD/84234/2012), EC | ELUSIVES (674896), EC | InvisiblesPlus (690575)

    Comment: 32 pages, 12 figures

  • publication . Preprint . Other literature type . Article . 2016
    Unifying leptogenesis, dark matter and high-energy neutrinos with right-handed neutrino mixing via Higgs portal
    Open Access English
    Authors:
    Bari, Pasquale Di; Ludl, Patrick Otto; Palomares-Ruiz, Sergio;
    doi: 10.1088/1475-7516/2016/11/044
    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 . 2019
    Origin of Yukawa couplings for Higgs bosons and leptoquarks
    Open Access
    Authors:
    Stephen F. King; Ivo de Medeiros Varzielas;
    doi: 10.1103/physrevd.99.095029
    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 . 2019
    Effective alignments and the landscape of $S_4$ flavour models
    Open Access English
    Authors:
    Varzielas, Ivo de Medeiros; Levy, Miguel; Zhou, Ye-Ling;
    doi: 10.1103/physrevd.100.035027
    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 . Article . Preprint . 2016
    A to Z of the muon anomalous magnetic moment in the MSSM with Pati-Salam at the GUT scale
    Open Access English
    Authors:
    Steve F. King; José Eliel Camargo-Molina; David J. Miller; Alexander Belyaev; Alexander Belyaev; António P. Morais; António P. Morais; Patrick B. Schaefers;
    doi: 10.1007/jhep06(2016)142
    Publisher: Springer Nature
    Project: RCUK | Exploring the limits of t... (ST/L000296/1), EC | ELUSIVES (674896), EC | InvisiblesPlus (690575), FCT | UID/MAT/04106/2013 (147206), EC | StronGrHEP (690904), FCT | SFRH/BPD/97126/2013 (SFRH/BPD/97126/2013)

    Comment: 29 pages, 14 figures; [v2] added references, corrected minor typos

  • publication . Article . Preprint . 2017
    Starobinsky-like inflation in no-scale supergravity Wess-Zumino model with Polonyi term
    Open Access English
    Authors:
    Stephen F. King; Miguel Crispim Romão;
    doi: 10.1007/jhep07(2017)033
    Publisher: SpringerOpen
    Project: RCUK | Exploring the limits of t... (ST/L000296/1), FCT | SFRH/BD/84234/2012 (SFRH/BD/84234/2012), EC | ELUSIVES (674896), EC | InvisiblesPlus (690575)

    We propose a simple modification of the no-scale supergravity Wess-Zumino model of Starobinsky-like inflation to include a Polonyi term in the superpotential. The purpose of this term is to provide an explicit mechanism for supersymmetry breaking at the end of inflation...

  • publication . Article . Preprint . 2020
    Symmetries and stabilisers in modular invariant flavour models
    Open Access English
    Authors:
    Ivo de Medeiros Varzielas; Miguel Levy; Ye-Ling Zhou;
    doi: 10.1007/jhep11(2020)085
    Publisher: Springer
    Project: EC | ELUSIVES (674896), EC | InvisiblesPlus (690575), RCUK | Exploring the limits of t... (ST/L000296/1)

    The idea of modular invariance provides a novel explanation of flavour mixing. Within the context of finite modular symmetries $\Gamma_N$ and for a given element $\gamma \in \Gamma_N$, we present an algorithm for finding stabilisers (specific values for moduli fields $\...

12 research outcomes, page 1 of 2