Results 11 to 20 of about 168 (75)
Interplay between dark matter and leptogenesis in a common framework
Journal of High Energy Physics, 2023 We consider the interplay between dark matter and leptogenesis in a common framework, where three right-handed neutrinos, one fermionic dark matter and two singlet scalars are introduced into the Standard Model.
XinXin Qi, Hao Sun
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Reheating and Supersymmetric Flat-Direction Baryogenesis [PDF]
, 1999 We re-examine Affleck-Dine baryo/leptogenesis from the oscillation of condensates along flat directions of the supersymmetric standard model, which attained large vevs at the end of inflationary epoque.
Rouzbeh Allahverdi +8 more
core +1 more source
Advances in High Energy Physics, Volume 2012, Issue 1, 2012., 2012 Standard Model fails to explain neutrino oscillations, dark matter, and baryon asymmetry of the Universe. All these problems can be solved with three sterile neutrinos added to SM. Quite remarkably, if sterile neutrino masses are well below the electroweak scale, this modification—Neutrino Minimal Standard Model (νMSM)—can be tested experimentally.
S. N. Gninenko +3 more
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Electroweak baryogenesis via top-charm mixing
Journal of High Energy Physics, 2023 We investigate a scenario of electroweak baryogenesis in the two Higgs doublet model with quark flavor mixing. In general, off-diagonal components of quark Yukawa interactions with additional Higgs bosons are strongly constrained by the data for flavor ...
Shinya Kanemura, Yushi Mura
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Observable r, gravitino dark matter, and non-thermal leptogenesis in no-scale supergravity
Journal of High Energy Physics, 2023 We analyse the shifted hybrid inflation in a no-scale supersymmetric SU(5) GUT model which naturally circumvents the monopole problem. The no-scale framework is derivable as the effective field theory of the supersymmetric (SUSY) compactifications of ...
Waqas Ahmed +3 more
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Journal of High Energy Physics, 2022 We propose a new mechanism to simultaneously explain the observed dark matter abundance and the baryon asymmetry of the Universe. The mechanism is based on the Filtered Dark Matter scenario, where dark matter particles acquire a large mass during a first-
Michael J. Baker +4 more
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Scalar-singlet assisted leptogenesis with CP violation from the vacuum
Journal of High Energy Physics, 2023 In the vanilla type-I seesaw leptogenesis scenario, CP violation required to generate the lepton asymmetries in the heavy Majorana neutrino decays stem from complex Dirac-type Yukawa couplings. In this paper we explore the case in which that CP violation
D. M. Barreiros +3 more
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Leptonic CP asymmetry and Light flavored scalar
Journal of High Energy Physics, 2023 We consider a situation where right-handed neutrinos couple to a light scalar which is possibly a Nambu-Goldstone boson resulting from high-energy symmetry breaking. Its coupling is typically complex-valued and flavor-dependent.
Yoshihiko Abe +2 more
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The Exact WKB analysis for asymmetric scalar preheating
Journal of High Energy Physics, 2023 Using the exact WKB analysis of the higher-order differential equations, we analyze the asymmetry in dynamical particle production of a complex scalar field. The solution requires the Stokes phenomena of the fourth-order differential equation.
Seishi Enomoto, Tomohiro Matsuda
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Leptogenesis in automatic Nelson-Barr models
Journal of High Energy PhysicsIn this study, we numerically show that automatic Nelson-Barr models with new chiral fermions can simultaneously solve the strong CP problem and generate the observed baryon asymmetry via high-scale leptogenesis.
C. Murgui, S. Patrone
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