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51 research outcomes, page 1 of 6
  • publication . Other literature type . Article . 2016
    Open Access
    Authors:
    Ivo de Medeiros Varzielas; Stephen F King;
    Publisher: American Physical Society (APS)
    Project: EC | SIFT (327195), RCUK | Exploring the Limits of t... (ST/J000396/1), EC | ELUSIVES (674896), EC | INVISIBLES (289442)

    CP-odd invariants provide a basis independent way of studying the CP properties of Lagrangians. We propose powerful methods for constructing basis invariants and determining whether they are CP odd or CP even, then systematically construct all of the simplest CP-odd inv...

  • publication . Article . Preprint . 2019
    Open Access English
    Authors:
    Heinrich, Lukas; Schulz, Holger; Turner, Jessica; Zhou, Ye Ling;
    Publisher: SpringerOpen
    Project: NSF | Elementary Particle Physi... (1505463), EC | ELUSIVES (674896), NSF | Collaborative Research: S... (1450310), RCUK | Exploring the limits of t... (ST/L000296/1), EC | InvisiblesPlus (690575)

    The observed pattern of mixing in the neutrino sector may be explained by the presence of a non-Abelian, discrete flavour symmetry broken into residual subgroups at low energies. Many flavour models require the presence of Standard Model singlet scalars which can prompt...

  • publication . Article . Preprint . Other literature type . 2017
    Open Access English
    Authors:
    Jose Miguel No; Veronica Sanz; Ilaria Brivio; Luca Merlo; Ken Mimasu;
    Publisher: Springer/Società Italiana di Fisica
    Project: EC | DARKHORIZONS (648680), NSF | Programs on Critical Prob... (1066293), EC | EWBGANDLHC (625809), EC | ELUSIVES (674896), EC | INVISIBLES (289442), RCUK | Theoretical Particle Phys... (ST/L000504/1), EC | InvisiblesPlus (690575)

    We study the leading effective interactions between the Standard Model fields and a generic singlet CP-odd (pseudo)Goldstone boson. Two possible frameworks for electroweak symmetry breaking are considered: linear and non-linear. For the latter case, the basis of leading...

  • publication . Preprint . Article . 2017
    Open Access English
    Authors:
    Stephen F King;
    Project: EC | ELUSIVES (674896), EC | InvisiblesPlus (690575), RCUK | Exploring the limits of t... (ST/L000296/1)

    We propose supersymmetric Majoron inflation in which the Majoron field $\Phi$ responsible for generating right-handed neutrino masses may also be suitable for giving low scale "hilltop" inflation, with a discrete lepton number $Z_N$ spontaneously broken at the end of in...

  • publication . Preprint . Article . Other literature type . 2018
    Open Access English
    Authors:
    Fredrik Björkeroth; Eung Jin Chun; Stephen F. King;
    Project: EC | InvisiblesPlus (690575), RCUK | Exploring the limits of t... (ST/L000296/1), EC | ELUSIVES (674896)

    Comment: v1: 27 pages. v2: version to appear in JHEP. 31 pages. Extended discussion on axion basis, updated mixing bounds

  • publication . Article . Preprint . Other literature type . 2017
    Open Access
    Authors:
    Stephen F King;
    Publisher: Springer Nature
    Project: EC | ELUSIVES (674896), RCUK | Exploring the limits of t... (ST/L000296/1), EC | InvisiblesPlus (690575)

    We show how any flavour conserving $Z'$ model can be made flavour violating and non-universal by introducing mass mixing of quarks and leptons with a fourth family of vector-like fermions with non-universal $Z'$ couplings. After developing a general formalism, we focus ...

  • publication . Preprint . Article . 2020
    Open Access English
    Authors:
    Stephen Parke; Nick Prouse; Stephen F King; Susana Molina Sedgwick;
    Project: RCUK | Exploring the limits of t... (ST/L000296/1), EC | ELUSIVES (674896), EC | InvisiblesPlus (690575)

    This paper explores the effects of changes in matter density profiles on neutrino oscillation probabilities, and whether these could potentially be seen by the future Hyper-Kamiokande long-baseline oscillation experiment (T2HK). The analysis is extended to include the p...

  • publication . Article . Preprint . 2018
    Open Access
    Authors:
    Daniele Teresi; Bhupal Dev;
    Publisher: World Scientific Pub Co Pte Lt
    Project: RCUK | Exploring the limits of t... (ST/L000296/1), EC | InvisiblesPlus (690575), EC | ELUSIVES (674896)

    Comment: 69 pages, 8 figures. Chapter 1 of the review volume "Leptogenesis: Current Challenges for Model Building, Phenomenology and Non-Equilibrium Field Theory". Matches published version

  • publication . Preprint . Article . 2019
    Open Access English
    Authors:
    Shyam Balaji; Maura Ramirez-Quezada; Ye-Ling Zhou;
    Project: RCUK | Exploring the limits of t... (ST/L000296/1), EC | ELUSIVES (674896), EC | InvisiblesPlus (690575)

    The radiative decay of neutral fermions has been studied for decades but $CP$ violation induced within such a paradigm has evaded attention. $CP$ violation in these processes can produce an asymmetry between circularly polarised directions of the radiated photons and pr...

  • publication . Other literature type . Article . 2018
    Open Access
    Authors:
    Stephen F King;
    Publisher: Springer Science and Business Media LLC
    Project: RCUK | Exploring the limits of t... (ST/L000296/1), EC | InvisiblesPlus (690575), EC | ELUSIVES (674896)

    We propose a 6d model with a SUSY $SU(5)$ gauge symmetry. After compactification, it explains the origin of the $S_4$ Family Symmetry with CSD3 vacuum alignment, as well as $SU(5)$ breaking with doublet-triplet splitting. The model naturally accounts for all quark and l...

51 research outcomes, page 1 of 6
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