Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Eijima, Shintaro"'
Publikováno v:
JHEP 05 (2023) 010
The gauged $U(1)_{L_{\mu}-L_{\tau}}$ symmetry is the simplest possibility to explain the observed muon $g-2$, while being consistent with the neutrino oscillations through the seesaw mechanism. In this paper, we investigate if leptogenesis can work a
Externí odkaz:
http://arxiv.org/abs/2303.09751
Publikováno v:
Phys. Rev. D 106, 103513 (2022)
We reexamine sterile neutrino dark matter in gauged $U(1)_{B-L}$ model. Improvements have been made by tracing and careful evaluation of the evolution of the number densities of sterile neutrinos $N$ and extra neutral gauge bosons $Z'$. As a result,
Externí odkaz:
http://arxiv.org/abs/2207.01775
Publikováno v:
JCAP04(2022)049
The $\nu$MSM -- an extension of the Standard Model by three relatively light singlet Majorana fermions $N_{1,2,3}$ -- allows for the generation of lepton asymmetry which is several orders of magnitude larger than the observed baryon asymmetry of the
Externí odkaz:
http://arxiv.org/abs/2011.12637
The simplest possibility to explain the baryon asymmetry of the Universe is to assume that radiation is created asymmetrically between baryons and anti-baryons after the inflation. We propose a new mechanism of this kind where CP-violating flavor osc
Externí odkaz:
http://arxiv.org/abs/1908.11864
Autor:
Boiarska, Iryna, Bondarenko, Kyrylo, Boyarsky, Alexey, Eijima, Shintaro, Ovchynnikov, Maksym, Ruchayskiy, Oleg, Timiryasov, Inar
The origin of the baryon asymmetry of the Universe (BAU) is one of the major puzzles beyond the Standard Model. Detecting the particles responsible for the generation of the BAU would enormously boost our understanding of physics of the early Univers
Externí odkaz:
http://arxiv.org/abs/1902.04535
Publikováno v:
JHEP 1907 (2019) 077
The Standard Model accompanied with two right-handed neutrinos with the masses below the weak scale can explain the observed baryon asymmetry of the Universe. Moreover, this model is at least partially testable in the forthcoming experiments such as
Externí odkaz:
http://arxiv.org/abs/1808.10833
Publikováno v:
Phys. Rev. D 96, 083010 (2017)
We consider a baryogenesis scenario via the oscillation of right-handed neutrinos with Majorana masses of the order of GeV, which are also responsible for neutrino masses by the seesaw mechanism. We study how the initial condition alters the predicti
Externí odkaz:
http://arxiv.org/abs/1704.02692
Publikováno v:
Phys.Lett.B771 (2017) 288-296
The existence of baryon asymmetry and dark matter in the Universe may be related to CP-violating reactions of three heavy neutral leptons (HNLs) with masses well below the Fermi scale. The dynamical description of the lepton asymmetry generation, whi
Externí odkaz:
http://arxiv.org/abs/1703.06085
We consider the neutrinoless double beta ($0\nu \beta \beta$) decay in the so-called $\nu$MSM, in which three right-handed neutrinos with masses below the electroweak scale are additionally introduced to the Standard Model. In this model there appear
Externí odkaz:
http://arxiv.org/abs/1606.06686
Autor:
Drewes, Marco, Eijima, Shintaro
Publikováno v:
Phys.Lett.B763 (2016) 72-79
The extension of the Standard Model by right handed neutrinos with masses in the GeV range can simultaneously explain the observed neutrino masses via the seesaw mechanism and the baryon asymmetry of the universe via leptogenesis. It has previously b
Externí odkaz:
http://arxiv.org/abs/1606.06221