Results 1 to 10 of about 2,521 (215)

Electroweak baryogenesis in 2HDM without EDM cancellation

Journal of High Energy Physics
We study two Higgs doublet models with successful electroweak baryogenesis but without cancellations of electric dipole moments (EDMs). For the baryogenesis, additional scalar bosons are favored to couple mainly with the top quark with CP violations ...
Masashi Aiko, Motoi Endo, Shinya Kanemura, Yushi Mura   +3 more
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Baryon asymmetry from higher-order matter contributions in gravity

Physics Letters B
We investigate the observed asymmetry between matter and antimatter by incorporating higher-order matter contributions in gravity, specifically analyzing gravitational baryogenesis within the framework of f(R,T2) gravity, where R is the Ricci scalar and ...
David S. Pereira, Francisco S.N. Lobo, José P. Mimoso   +2 more
doaj   +1 more source

Baryogenesis via leptogenesis in multi-field inflation

European Physical Journal C: Particles and Fields, 2018
In multi-field reheating after modular j-inflation we investigate the conditions under which baryogenesis via non-thermal leptogenesis can be successfully realized.
Grigoris Panotopoulos, Nelson Videla
doaj   +1 more source

Benchmarking a fading window: electroweak baryogenesis in the C2HDM, LHC constraints after Run 2 and prospects for LISA

Journal of High Energy Physics
The origin of the baryon asymmetry of the universe remains one of the most pressing open questions in particle physics and cosmology. Electroweak baryogenesis offers an experimentally testable explanation, requiring new sources of CP violation and a ...
Thomas Biekötter, María Olalla Olea-Romacho   +1 more
doaj   +1 more source

THE MYSTERY OF ANTIMATTER: WHAT WE KNOW SO FAR

Worldwide Journal of Physics
Antimatter, the mirror counterpart of ordinary matter, continues to intrigue physicists due to its profound implications for cosmology, particle physics, and the fundamental laws of the universe.
Kashif Sabeeh, Waqar Mahmood
doaj  

High scale electroweak phase transition: baryogenesis & symmetry non-restoration

Journal of High Energy Physics, 2018
We explore the possibility that the electroweak phase transition happens at a scale much higher than the electroweak scale today. In this context, high scale CP-violating sources for electroweak baryogenesis are not constrained by low-energy experiments.
Iason Baldes, Géraldine Servant
doaj   +1 more source

Varying constants driven baryogenesis

European Physical Journal C: Particles and Fields, 2019
We study the spontaneous baryogenesis scenario in the early universe for three different frameworks of varying constants theories. We replace the constants by dynamical scalar fields playing the role of thermions.
Katarzyna Leszczyńska, Mariusz P. Da̧browski, Tomasz Denkiewicz   +2 more
doaj   +1 more source

Scalar–tensor baryogenesis: a scalar–tensor completion of gravitational baryogenesis

Physics Letters B
We propose Scalar–Tensor Baryogenesis (STB), in which the CP-violating bias needed for baryogenesis is sourced by the gravitational scalars that appear in scalar–tensor representations of modified gravity.
David S. Pereira
doaj   +1 more source

Gaugino portal baryogenesis

Journal of High Energy Physics, 2019
We study baryogenesis via a gaugino portal, the supersymmetric counterpart to the widely studied kinetic mixing portal, to a hidden sector. CP and baryon number violating decays of a hidden sector gaugino into the visible sector can produce the observed ...
Aaron Pierce, Bibhushan Shakya
doaj   +1 more source

Excited lepton baryogenesis

EPJ Web of Conferences, 2017
The excited leptons that share the quantum numbers with the Standard Model leptons but have larger masses are widespread in many promising new physics theories.
Zhuridov Dmitry
doaj   +1 more source