Results 21 to 30 of about 168 (75)

Type II see-saw dominance in SO(10)

, 2010
Grand unified theories where the neutrino mass is given by Type II seesaw have the potential to provide interesting connections between the neutrino and charged fermion sectors.
Goran Senjanović, Alejandra Melfo, Alba Ramírez, Ramirez, Alba, Senjanovic, Goran, Melfo, Alejandra   +5 more
core   +1 more source

Distinct signatures of spinning PBH domination and evaporation: doubly peaked gravitational waves, dark relics and CMB complementarity

Journal of High Energy Physics, 2023
Ultra-low mass primordial black holes (PBH), which may briefly dominate the energy density of the universe but completely evaporate before the big bang nucleosynthesis (BBN), can lead to interesting observable signatures. In our previous work, we studied
Nilanjandev Bhaumik, Anish Ghoshal, Rajeev Kumar Jain, Marek Lewicki   +3 more
doaj   +1 more source

Dark matter transport in the early universe

, 2023
Dark matter is indispensable for explaining cosmological observations from the small to the large scale. Although the nature of dark matter remains elusive, the hypothesis of unidentified dark matter particle(s) persists as the most compelling ...
Ala-Mattinen, Kalle
core  

Leptogenesis in SO(10) with minimal Yukawa sector

Journal of High Energy Physics
In prior studies, a very minimal Yukawa sector within the SO(10) Grand Unified Theory framework has been identified, comprising of Higgs fields belonging to a real 10 H , a real 120 H , and a 126 ¯ H $$ {\overline{126}}_H $$ dimensional representations ...
K. S. Babu, Pasquale Di Bari, Chee Sheng Fong, Shaikh Saad   +3 more
doaj   +1 more source

The scalar singlet extension of the Standard Model: gravitational waves versus baryogenesis

Journal of High Energy Physics, 2023
We study the possible gravitational wave signal and the viability of baryogenesis arising from the electroweak phase transition in an extension of the Standard Model (SM) by a scalar singlet field without a ℤ2 symmetry.
John Ellis, Marek Lewicki, Marco Merchand, José Miguel No, Mateusz Zych   +4 more
doaj   +1 more source

Baryogenesis from cosmological CP breaking

Journal of High Energy Physics
We show that baryogenesis can arise from the cosmological evolution of a scalar field that governs CP-violating parameters, such as the Yukawa couplings and the theta terms of the Standard Model.
Mateusz Duch, Alessandro Strumia, Arsenii Titov   +2 more
doaj   +1 more source

Spontaneous CP violation and leptogenesis in SO(10)

Journal of High Energy Physics
We present a renormalizable SO(10) grand unified theory with a minimal Yukawa sector consisting of a 126 H , a real 10 H and a real 120 H , where CP violation has a spontaneous origin.
K. S. Babu, Chee Sheng Fong, Shaikh Saad
doaj   +1 more source

Baryogenesis and dark matter in the mirror twin Higgs

Journal of High Energy Physics, 2023
We consider a natural asymmetric dark matter (ADM) model in the mirror twin Higgs (MTH). We show that it is possible to obtain the correct dark matter (DM) abundance when a twin baryon is the DM without the need of explicit breaking of the MTH ℤ2 ...
Pedro Bittar, Gustavo Burdman, Larissa Kiriliuk   +2 more
doaj   +1 more source

Asymmetric dark matter from leptogenesis in type-III seesaw framework with modular S 4 symmetry

Journal of High Energy Physics
We present a unified framework for neutrino masses, baryogenesis, and dark matter based on a modular S 4 symmetry combined with a type-III seesaw mechanism.
Abhishek, V. Suryanarayana Mummidi
doaj   +1 more source

Z2 non-restoration and composite Higgs: singlet-assisted baryogenesis w/o topological defects

Journal of High Energy Physics, 2022
Simple scalar-singlet extensions of the Standard Model with a (spontaneously broken) Z 2 symmetry allow for a strong first order electroweak phase transition, as sought in order to realize electroweak baryogenesis.
Andrei Angelescu, Florian Goertz, Aika Tada   +2 more
doaj   +1 more source