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An extension of the Standard Model by three right-handed neutrinos with masses smaller than the electroweak scale (the $\nu$MSM) can explain simultaneously dark matter and baryon asymmetry of the Universe, being consistent with the data on…

天体物理学 · 物理学 2016-11-15 Mikhail Shaposhnikov

We describe an extention of the Standard Model (the $\nu$MSM) by three light singlet Majorana fermions -- sterile neutrinos, which allows to address simultaneously the problem of neutrino oscillations and the problems of dark matter and…

高能物理 - 唯象学 · 物理学 2007-06-14 Mikhail Shaposhnikov

We present a comprehensive overview of an extension of the Standard Model that contains three right-handed (sterile) neutrinos with masses below the electroweak scale [the Neutrino Minimal Standard Model, (nuMSM)]. We consider the history…

高能物理 - 唯象学 · 物理学 2009-12-15 Alexey Boyarsky , Oleg Ruchayskiy , Mikhail Shaposhnikov

We show that, leaving aside accelerated cosmic expansion, all experimental data in high energy physics that are commonly agreed to require physics beyond the Standard Model can be explained when completing it by three right handed neutrinos…

高能物理 - 唯象学 · 物理学 2013-09-03 Laurent Canetti , Marco Drewes , Tibor Frossard , Mikhail Shaposhnikov

We show that the extension of the standard model by three right-handed neutrinos with masses smaller than the electroweak scale (the $\nu$MSM) can explain simultaneously dark matter and baryon asymmetry of the universe and be consistent…

高能物理 - 唯象学 · 物理学 2010-04-06 Takehiko Asaka , Mikhail Shaposhnikov

A right-handed neutrino is a promising candidate for dark matter (DM) which has no interaction with nuclei. Since two right-handed neutrinos explain neutrino oscillation data and baryon number asymmetry through both the seesaw mechanism and…

高能物理 - 唯象学 · 物理学 2026-02-17 Daijiro Suematsu

Joint analysis of the results of the Neutrino-4 experiment and the data of the GALLEX, SAGE and BEST experiments confirms the parameters of neutrino oscillations declared by the Neutrino-4 experiment $(\Delta m_{14}^2= 7.3 \text{eV}^2$ and…

高能物理 - 唯象学 · 物理学 2024-04-22 A. P. Serebrov , R. M. Samoilov , O. M. Zherebtsov , N. S. Budanov

We consider neutrino Minimal extension of the Standard Model ($\nu$MSM), which by introducing only three sterile neutrinos in sub electroweak region can explain active neutrino oscillations (via seesaw type I mechanism), baryon asymmetry of…

高能物理 - 唯象学 · 物理学 2015-08-12 Dmitry Gorbunov , Inar Timiryasov

We investigate an extension of the Minimal Standard Model by right-handed neutrinos (the $\nu$MSM) to incorporate neutrino masses consistent with oscillation experiments. Within this theory, the only candidates for dark matter particles are…

高能物理 - 唯象学 · 物理学 2008-11-26 Takehiko Asaka , Steve Blanchet , Mikhail Shaposhnikov

A number of observed phenomena in high energy physics and cosmology lack their resolution within the Standard Model of particle physics. These puzzles include neutrino oscillations, baryon asymmetry of the universe and existence of dark…

高能物理 - 唯象学 · 物理学 2008-12-18 Mikhail Shaposhnikov

We explore the range of parameters for dark-matter sterile neutrinos in an extention of the Minimal Standard Model by three singlet fermions with masses below the electroweak scale (the $\nu$MSM). This simple model can explain a wide range…

高能物理 - 唯象学 · 物理学 2008-11-26 Takehiko Asaka , Mikhail Shaposhnikov , Alexander Kusenko

We analyze the role of sterile neutrinos in the framework of the $\mu\nu$SSM, where the presence of right-handed neutrinos provides a simultaneous solution to $\mu$- and $\nu$-problems in supersymmetry. We adopt a minimalistic approach,…

高能物理 - 唯象学 · 物理学 2023-06-07 Paulina Knees , Daniel E. Lopez-Fogliani , C. Munoz

We demonstrate for the first time that three sterile neutrinos alone can simultaneously explain neutrino oscillations, the observed dark matter and the baryon asymmetry of the Universe without new physics above the Fermi scale. The key new…

高能物理 - 唯象学 · 物理学 2013-03-01 Laurent Canetti , Marco Drewes , Mikhail Shaposhnikov

Extending the Standard Model with three right-handed neutrinos and a simple QCD axion sector can account for neutrino oscillations, dark matter and baryon asymmetry; at the same time, it solves the strong CP problem, stabilizes the…

高能物理 - 唯象学 · 物理学 2021-09-24 Alberto Salvio , Simone Scollo

A number of short baseline neutrino oscillation experiments have observed an anomalous excess of neutrinos in the low energy range. This may hint towards the existence of additional neutrino mass splittings. If true, additional sterile…

高能物理 - 实验 · 物理学 2018-02-22 Alejandro Diaz

We study sterile neutrino dark matter (DM) in a classically conformal U(1)' extension of the Standard Model with three right-handed neutrinos and a Majoron-like singlet scalar that generate the observed pattern of active neutrino masses and…

高能物理 - 唯象学 · 物理学 2026-02-13 João Gonçalves , Danny Marfatia , António P. Morais , Vinícius Oliveira , Roman Pasechnik

The super-weak model is a U(1) extension of the Standard Model. In addition to a mediator $Z'$, a singlet scalar field $\chi$ is added to deal with the meta-stability of the SM vacuum, and right-handed neutrinos are introduced to account…

高能物理 - 唯象学 · 物理学 2022-10-31 Károly Seller

The sterile neutrino solutions to different irregular results and observations in neutrino physics are studied. It is pointed out that introducing sterile neutrinos helps to solve simultaneously the observed anomalies. It is argued that…

高能物理 - 唯象学 · 物理学 2007-05-23 Juha T. Peltoniemi

A sterile neutrino in addition to the three known neutrinos seems unavoidable if one wants a simultaneous understanding of the results of the LSND experiment indicating $\nu_{\mu}-\nu_e$ oscillation together with other evidences for…

高能物理 - 唯象学 · 物理学 2009-10-31 R. N. Mohapatra

To explain the dark matter and the baryon asymmetry of the Universe, the parameters of the $\nu$MSM (an extension of the Minimal Standard Model by three singlet neutrinos with masses smaller than the electroweak scale) must be fine-tuned:…

高能物理 - 唯象学 · 物理学 2008-11-26 Mikhail Shaposhnikov
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