Results 11 to 20 of about 369,328 (174)
Cogenesis of Baryon asymmetry and gravitational dark matter from primordial black holes [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 We propose a scenario where dark matter (DM) with a wide mass range from a few keV to PeV can be produced solely from evaporating primordial black holes (PBH), while being consistent with the required free streaming length for structure formation.
Basabendu Barman +3 more
semanticscholar +1 more source
Baryon Asymmetry of the Universe from Lepton Flavor Violation. [PDF]
Physical Review Letters, 2021 Charged-lepton flavor violation (CLFV) is a smoking-gun signature of physics beyond the standard model. The discovery of CLFV in upcoming experiments would indicate that CLFV processes must have been efficient in the early Universe at relatively low ...
K. Mukaida, K. Schmitz, Masaki Yamada
semanticscholar +1 more source
Imprint of the Seesaw Mechanism on Feebly Interacting Dark Matter and the Baryon Asymmetry. [PDF]
Physical Review Letters, 2021 We show that the type-I seesaw, responsible for generating the light neutrino mass, itself is capable of accommodating one of the three right handed neutrinos as a freeze-in type of dark matter where the required smallness of the associated coupling is ...
A. Datta, R. Roshan, A. Sil
semanticscholar +1 more source
BSMPT v2 a tool for the electroweak phase transition and the baryon asymmetry of the universe in extended Higgs Sectors [PDF]
Computer Physics Communications, 2020 We present the C++ code BSMPT v2 which is an extension of the previous code BSMPT for the calculation of the strength of the electroweak phase transition in extended Higgs sectors.
P. Basler +2 more
semanticscholar +1 more source
Leptogenesis in the minimal gauged U(1)Lμ−Lτ model and the sign of the cosmological baryon asymmetry [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 The minimal gauged U(1)Lμ−Lτ model is a simple extension of the Standard Model and has a strong predictive power for the neutrino sector. In particular, the mass spectrum and couplings of heavy right-handed neutrinos are determined as functions of three ...
K. Asai +3 more
semanticscholar +1 more source
WIMP cogenesis for asymmetric dark matter and the baryon asymmetry [PDF]
Journal of High Energy Physics, 2020 We propose a new mechanism where asymmetric dark matter (ADM) and the baryon asymmetry are both generated in the same decay chain of a metastable weakly interacting massive particle (WIMP) after its thermal freezeout.
Yanou Cui, M. Shamma
semanticscholar +1 more source
Dark matter from baryon asymmetry [PDF]
Physical Review D, 2005 The measured densities of dark and baryonic matter are surprisingly close to each other, even though the baryon asymmetry and the dark matter are usually explained by unrelated mechanisms. We consider a scenario where the dark matter S is produced non-thermally from the decay of a messenger particle X, which carries the baryon number and compensates ...
Kitano, Ryuichiro, Low, Ian
openaire +2 more sources
Neutrino Cosmology and Baryon Asymmetry
Anais do Congresso de Iniciação Científica da Unicamp, 2015 A. D. Souza, P. Holanda
semanticscholar +3 more sources
Baryon asymmetry and neutrino mixing [PDF]
Physics Letters B, 1996 In theories where $B-L$ is a spontaneously broken local symmetry, the cosmological baryon asymmetry can be generated by the out-of-equilibrium decay of heavy Majorana neutrinos. We study this mechanism assuming a similar pattern of mixings and masses for leptons and quarks, as suggested by SO(10) unification.
Buchmuller, Wilfried, Plumacher, M.
openaire +3 more sources
Annalen der Physik, Volume 535, Issue 7, July 2023., 2023 Implications for the cosmological model are explored of the assumption that the cosmic microwave background is subject to an SU(2) Yang– Mills theory of scale 10−4 eV rather than U(1) quantum thermodynamics. This concerns zeroth‐order (changes at high redshifts) and first‐order cosmological perturbations (changes at high and low redshifts).
Ralf Hofmann +2 more
wiley +1 more source