Results 61 to 70 of about 848,123 (320)
Shining light on the scotogenic model: interplay of colliders and cosmology
Journal of High Energy Physics, 2020 In the framework of the scotogenic model, which features radiative generation of neutrino masses, we explore light dark matter scenario. Throughout the paper we chiefly focus on keV-scale dark matter which can be produced either via freeze-in through the
Sven Baumholzer +3 more
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Phenomenology of the generalised scotogenic model with fermionic dark matter
Journal of High Energy Physics, 2018 We study a simple extension of the Standard Model that accounts for neutrino masses and dark matter. The Standard Model is augmented by two Higgs doublets and one Dirac singlet fermion, all charged under a new dark global symmetry.
Claudia Hagedorn +3 more
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Probing dark matter freeze-in with long-lived particle signatures: MATHUSLA, HL-LHC and FCC-hh
Journal of High Energy Physics, 2020 Collider searches for long-lived particles yield a promising avenue to probe the freeze-in production of Dark Matter via the decay of a parent particle.
J.M. No, P. Tunney, B. Zaldivar
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Physics Beyond the Standard Model [PDF]
, 2008 We review our expectations in the last year before the LHC commissioning.
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Minimally extended left-right symmetric model for dark matter with U(1) portal
Journal of High Energy Physics, 2018 A minimal extension of the left-right symmetric model for neutrino masses that includes a vector-like singlet fermion dark matter (DM) is presented with the DM connected to the visible sector via a gauged U(1) portal.
M. J. Neves +3 more
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Pseudo-majoron as light mediator of singlet scalar dark matter
Journal of High Energy Physics, 2017 In the singlet-triplet majoron model of neutrino mass, lepton number is spontaneously broken. If it is also softly broken, then a naturally light pseudoscalar particle η I exists.
Ernest Ma, Markos Maniatis
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Journal of High Energy Physics, 2020 I suggest a left-right mirror symmetric particle model as the natural and aes- thetic extension of the SM. As the left-right mirror symmetry breaking, the tiny neutrino mass is generated by the radiative mechanism, the baryon asymmetry through the lepto-
Wei-Min Yang
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Gravitational tests of electroweak relaxation
Journal of High Energy Physics, 2021 We consider a scenario in which the electroweak scale is stabilized via the relaxion mechanism during inflation, focussing on the case in which the back-reaction potential is generated by the confinement of new strongly interacting vector-like fermions ...
Daniele Barducci +2 more
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Universal Unitarity Triangle and Physics Beyond the Standard Model [PDF]
, 2000 We make the simple observation that there exists a universal unitarity triangle for all models, like the SM, the Two Higgs Doublet Models I and II and the MSSM with minimal flavour violation, that do not have any new operators beyond those present in the
Buras, A. J. +4 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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