Results 51 to 60 of about 172 (75)

Leptogenesis in realistic flipped SU(5)

Journal of High Energy Physics
We 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, George K. Leontaris, Luca Marsili, Ye-Ling Zhou   +3 more
doaj   +1 more source

Baryogenesis via QCD preheating with nonadiabatic baryon chemical potential

Journal of High Energy Physics
The 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, Xin-Ru Wang, Shinya Matsuzaki   +2 more
doaj   +1 more source

Unified origin of curvature perturbation and baryon asymmetry of the universe

Journal of High Energy Physics
We 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, Abhishek Naskar, Nobuchika Okada   +2 more
doaj   +1 more source

From B c mesons to the baryon asymmetry: a unified B mesogenesis framework

Journal of High Energy Physics
B mesogenesis offers an interesting mechanism to generate the baryon asymmetry of the universe by converting the CP violation of the Standard Model into a net baryon number asymmetry.
M. Burgos Marcos, A. Verheyden, K. K. Vos   +2 more
doaj   +1 more source

Affleck-Dine leptoflavorgenesis

Journal of High Energy Physics
We 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, Koichi Hamaguchi, Maksym Ovchynnikov   +2 more
doaj   +1 more source

Baryogenesis in SU(2) L multiplet models

Journal of High Energy Physics
We investigate baryogenesis in Standard Model (SM) extensions with new SU(2) L multiplet fields. We focus on sphalerogenesis, in which the baryon asymmetry of the Universe (BAU) is generated through the gradual decoupling of CP-violating electroweak ...
Kiyoto Ogawa, Masanori Tanaka
doaj   +1 more source

Impact of dim-6 νSMEFT operators on low-scale leptogenesis

Journal of High Energy Physics
We investigate the impact of higher-dimensional operators on low-scale leptogenesis (LG) via oscillations of right-handed neutrinos within the neutrino-extended Standard Model Effective Field Theory (νSMEFT) and discuss the connection to neutrinoless ...
Kaori Fuyuto, Julia Harz, Sascha Weber
doaj   +1 more source

Revisiting the minimal Nelson-Barr model

Journal of High Energy Physics
We 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
doaj   +1 more source

Electroweak symmetry non-restoration and suppressed dark radiation in supersymmetric Twin Higgs model

Journal of High Energy Physics
We investigate a possibility of electroweak symmetry non-restoration (SNR) below the Twin electroweak scale (~ TeV) within the Twin Higgs model. We focus on supersymmetric extensions with light sfermions where SNR is driven by mirror symmetry breaking in
Marcin Badziak, Keisuke Harigaya, Ignacy Nałęcz   +2 more
doaj   +1 more source

Bounds from D/H on baryogenesis models

Journal of High Energy Physics
We review the constraints on baryon inhomogeneities derived from measurements of the deuterium abundance, D/H, and apply them to a range of baryogenesis models.
Aleksandr Azatov, Bruno Missoni
doaj   +1 more source