Results 31 to 40 of about 147 (76)
Second leptogenesis: Unraveling the baryon-lepton asymmetry discrepancy
Journal of High Energy PhysicsWe propose a novel scenario to explain the matter-antimatter asymmetry by twofold leptogenesis, wherein heavy Majorana neutrinos exhibit temperature-dependent masses and engage in CP-violating decays.
YeolLin ChoeJo +3 more
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A predictive and testable unified theory of fermion masses, mixing and leptogenesis
Journal of High Energy Physics, 2022 We consider a minimal non-supersymmetric SO(10) Grand Unified Theory (GUT) model that can reproduce the observed fermionic masses and mixing parameters of the Standard Model.
Bowen Fu +5 more
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Common origin of dark matter and leptogenesis in U(1) B−L
Journal of High Energy PhysicsIn this paper, we investigate the common parameter space of dark matter and leptogenesis in the U(1) B−L symmetry. This model involves a complex scalar ϕ, sterile neutrinos N, and Majorana dark matter χ, where only dark matter χ is charged under the Z 2 ...
Ang Liu +4 more
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Magnetic helicity, magnetic monopoles, and Higgs winding
Journal of High Energy PhysicsChanges in magnetic helicity are often discussed across a variety of fields, from condensed matter physics to early universe cosmology. It is frequently stated that the helicity change is given by the integral of the gauge field strength tensor and its ...
Hajime Fukuda +4 more
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Journal of High Energy PhysicsThe origin of neutrino masses can be simply attributed to a new scalar beyond the Standard Model. We demonstrate that leptogenesis can explain the baryon asymmetry of the universe already in such a minimal framework.
Shinya Kanemura, Shao-Ping Li
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Leptogenesis in realistic flipped SU(5)
Journal of High Energy PhysicsWe study thermal leptogenesis in realistic supersymmetric flipped SU(5) × U(1) unification. As up-type quarks and neutrinos are arranged in the same multiplets, they exhibit strong correlations, and it is commonly believed that the masses of right-handed
Stephen F. King +3 more
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Baryogenesis via QCD preheating with nonadiabatic baryon chemical potential
Journal of High Energy PhysicsThe chiral phase transition in QCD can be supercooled in the thermal history of the universe to be instantaneously out-of equilibrium, if QCD is coupled to a dark QCD sector exhibiting the dark chiral phase transition of the first order. In that case the
Jimin Wang +2 more
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Unified origin of curvature perturbation and baryon asymmetry of the universe
Journal of High Energy PhysicsWe propose a unified framework that describes both the curvaton mechanism for generating primordial density fluctuations and the Affleck-Dine (AD) mechanism for baryogenesis.
Anish Ghoshal +2 more
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Affleck-Dine leptoflavorgenesis
Journal of High Energy PhysicsWe propose a scenario to produce large primordial lepton flavor asymmetries with vanishing total lepton asymmetry, based on the Affleck-Dine mechanism with Q-ball formation.
Kensuke Akita +2 more
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Revisiting the minimal Nelson-Barr model
Journal of High Energy PhysicsWe revisit the minimal Nelson-Barr model for solving the strong CP problem through the idea of spontaneous CP breaking. The minimal model suffers from the quality problem, which means that the strong CP angle is generated by higher-dimensional operators ...
Kai Murai, Kazunori Nakayama
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