Results 1 to 10 of about 162 (74)

NEUTRINO COUPLING TO COSMOLOGICAL BACKGROUND: A REVIEW ON GRAVITATIONAL BARYO/LEPTOGENESIS [PDF]

International Journal of Modern Physics D, 2013
In this paper, we review the theories of origin of matter–antimatter asymmetry in the universe. The general conditions for achieving baryogenesis and leptogenesis in a CPT conserving field theory have been laid down by Sakharov. In this review, we discuss scenarios where a background scalar or gravitational field spontaneously breaks the CPT symmetry ...
G Lambiase, Subhendra Mohanty
exaly   +4 more sources

Cosmological CPT-violation, baryo/leptogenesis and CMB polarization [PDF]

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2007
The version appears in ...
Mingzhe Li, Jun-Qing Xia, Hong Li
exaly   +3 more sources

Neutrino mass and leptogenesis in a hybrid seesaw model with a spontaneously broken CP

Journal of High Energy Physics, 2023
We introduce a novel hybrid framework combining type I and type II seesaw models for neutrino mass where a complex vacuum expectation value of a singlet scalar field breaks CP spontaneously.
Rohan Pramanick, Avirup Shaw, Ray Tirtha Sankar   +2 more
exaly   +2 more sources

Leptogenesis in SO(10) models with A4 modular symmetry

Journal of High Energy Physics, 2022
We study the prediction for leptogenesis in two renormalizable supersymmetric SO(10) × A 4 modular models in which the neutrino mass is dominantly generated by the type I seesaw mechanism. The evolution of the lepton asymmetries are described in terms of
Gui-Jun Ding, Stephen F KING, Jun-Nan Lu   +2 more
exaly   +2 more sources

Common origin of dark matter and leptogenesis in U(1)B−L

Journal of High Energy Physics
In 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, Feng-Lan Shao, Zhi-Long Han
exaly   +2 more sources

Second leptogenesis: Unraveling the baryon-lepton asymmetry discrepancy

Journal of High Energy Physics
We 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, Kazuki Enomoto, Yechan Kim   +2 more
exaly   +2 more sources

Leptogenesis in five-dimensional asymptotic grand unification models

Journal of High Energy Physics
Asymptotic grand unification models can be constructed in five dimensions compactified on an orbifold. We demonstrate that the parameter space of such models admit solutions that naturally achieve the baryon asymmetry via leptogenesis, these solutions ...
Giacomo Cacciapaglia, Aldo Deandrea, Deandrea Aldo   +2 more
exaly   +2 more sources

New benchmark scenarios of electroweak baryogenesis in aligned two Higgs double models

Journal of High Energy Physics, 2022
We discuss electroweak baryogenesis in aligned two Higgs doublet models. It is known that in this model the severe constraint from the experimental results for the electron electric dipole moment can be avoided by destructive interference among CP ...
Kazuki Enomoto, Shinya Kanemura, Yushi Mura   +2 more
doaj   +1 more source

Type II Seesaw leptogenesis

Journal of High Energy Physics, 2022
The Type II Seesaw Mechanism provides a minimal framework to explain the neutrino masses involving the introduction of a single triplet Higgs to the Standard Model.
Neil D. Barrie, Chengcheng Han, Hitoshi Murayama   +2 more
doaj   +1 more source

Doubly peaked induced stochastic gravitational wave background: testing baryogenesis from primordial black holes

Journal of High Energy Physics, 2022
Hawking evaporation of primordial black holes (PBHs) can facilitate the generation of matter-antimatter asymmetry. We focus on ultra-low mass PBHs that briefly dominate the universe and evaporate before the big bang nucleosynthesis.
Nilanjandev Bhaumik, Anish Ghoshal, Marek Lewicki   +2 more
doaj   +1 more source