Results 41 to 50 of about 68,432 (208)
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
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b Physics beyond the standard model [PDF]
Nuclear Physics B - Proceedings Supplements, 2003 10 pages, LaTeX, 1 figure, ps file included.
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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
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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
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Outstanding questions: physics beyond the Standard Model [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2012 The Standard Model of particle physics agrees very well with experiment, but many important questions remain unanswered, among them are the following. What is the origin of particle masses and are they due to a Higgs boson? How does one understand the number of species of matter particles and how do they mix?
John Ellis, John Ellis
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Physics Beyond the Standard Model
arXiv: High Energy Physics - Phenomenology, 2016 In these three lectures I review the need to go beyond the Standard Glashow- Weinberg-Salam Model and discuss some of the approaches that are explored in this direction.
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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
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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
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Exotic sterile neutrinos and pseudo-Goldstone phenomenology
Journal of High Energy Physics, 2019 We study the phenomenology of a light (GeV scale) sterile neutrino sector and the pseudo-Goldstone boson (not the majoron) associated with a global symmetry in this sector that is broken at a high scale.
Bibhushan Shakya, James D. Wells
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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
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