Results 31 to 40 of about 72,340 (313)
MeV-scale seesaw and leptogenesis
Journal of High Energy Physics, 2021 We study the type-I seesaw model with three right-handed neutrinos and Majorana masses below the pion mass. In this mass range, the model parameter space is not only strongly constrained by the requirement to explain the light neutrino masses, but also ...
Valerie Domcke +3 more
doaj +1 more source
Electroweak-Skyrmion as asymmetric dark matter
Journal of High Energy Physics, 2022 We propose a scenario that the Electroweak-Skyrmion, a solitonic object made of the Higgs field and the electroweak gauge fields, is identified as an asymmetric dark matter.
Yu Hamada +2 more
doaj +1 more source
Cosmology with a very light L μ − L τ gauge boson
Journal of High Energy Physics, 2019 In this paper, we explore in detail the cosmological implications of an abelian L μ − L τ gauge extension of the Standard Model featuring a light and weakly coupled Z′.
Miguel Escudero +3 more
doaj +1 more source
Search for physics beyond the standard model [PDF]
AIP Conference Proceedings, 1994 We survey some recent ideas and progress in looking for particle physics beyond the Standard Model, connected by the theme of Supersymmetry (SUSY). We review the success of SUSY-GUT models, the expected experimental signatures and present limits on SUSY partner particles, and Higgs phenomenology in the minimal SUSY model.
Barger, V., Phillips, R. J. N.
openaire +2 more sources
Assessing perturbativity and vacuum stability in high-scale leptogenesis
Journal of High Energy Physics, 2018 We consider the requirements that all coupling constants remain perturbative and the electroweak vacuum metastable up to the Planck scale in high-scale thermal leptogenesis, in the context of a type-I seesaw mechanism. We find a large region of the model
Seyda Ipek +2 more
doaj +1 more source
Impact of Beyond the Standard Model physics in the detection of the Cosmic Neutrino Background
Journal of High Energy Physics, 2017 We discuss the effect of Beyond the Standard Model charged current interactions on the detection of the Cosmic Neutrino Background by neutrino capture on tritium in a PTOLEMY-like detector.
Martín Arteaga +3 more
doaj +1 more source
Relaxing cosmological neutrino mass bounds with unstable neutrinos
Journal of High Energy Physics, 2020 At present, cosmological observations set the most stringent bound on the neutrino mass scale. Within the standard cosmological model (ΛCDM), the Planck collaboration reports ∑m v < 0.12 eV at 95 % CL.
Miguel Escudero +3 more
doaj +1 more source
Cosmological relaxation through the dark axion portal
Journal of High Energy Physics, 2022 The dark axion portal is a coupling of an axion-like particle to a dark photon kinetically mixed with the visible photon. We show how this portal, when applied to the relaxion, can lead to cosmological relaxation of the weak scale using dark photon ...
Valerie Domcke, Kai Schmitz, Tevong You
doaj +1 more source
Journal of High Energy Physics, 2021 Many minimal models of dark matter (DM) or canonical solutions to the hierarchy problem are either excluded or severely constrained by LHC and direct detection null results. In particular, Higgs Portal Dark Matter (HPDM) features a scalar coupling to the
David Curtin, Shayne Gryba
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Ongoing evidence indicates increased risk of sarcopenic obesity among children and young people (CYP) with acute lymphoblastic leukemia (ALL), often beginning early in treatment, persisting into survivorship. This review evaluates current literature on body composition in CYP with ALL during and after treatment.
Lina A. Zahed +5 more
wiley +1 more source