arXiv subjects

Vitaliy Beylin

Publications and source records attributed to Vitaliy Beylin.

3 recordsLinked to original sources

arXiv2018

Dark Matter in the Standard Model Extension with Singlet Quark

We analyze the possibility of hadron Dark Matter carriers consisting of singlet quark and the light standard one. It is shown that stable singlet quarks generate effects of new physics which do not contradict to restrictions from precision electroweak data. The neutral and charged pseudoscalar low-lying states are interpreted as the Dark Matter particle and its mass-degenerated partner. We evaluated their masses and lifetime of the charged component, and describe asymptotics of the potential of low-energy interactions of these particles with nucleons and with each other. Some peculiarities of Sommerfeld enhancement effect in the annihilation process are also discussed.

hep-ph↗

arXiv2005

Higgsinos as carriers of SUSY residual effects

New version of the MSSM scales is discussed. In this version mu << M_{SUSY} ~ M_0 ~ M_{1/2}, where mu is the Higgsino mass, M_0 is the mass scale of sleptons and squarks, M_{1/2} is the mass scale of gaugino. Renormalization group motivation of this MSSM version is proposed. The radiation corrections give main contribution to the splitting of neutralino and chargino masses if M_{SUSY} > 10^7 GeV. Calculation of the mass difference has led to the value M_{chi_1^\pm}-M_{chi_{1,2}^0} ~ 360 MeV at M_{chi} ~ mu ~ 3 TeV. The mean life time of charged Higgsino in this model is tau_{chi_1^\pm} ~ 0.4 * 10^{-9} s. The analysis of the residual neutralino concentration in the cosmological plasma is developed and the value of Higgsino mass is estimated: M_{chi} ~ 3 TeV. Formation of the residual neutralino concentration occurs in the high symmetric phase of the cosmological plasma. Problems of the relic Higgsinos searches at the underground laboratory NUSEL and Galactic neutralino annihilation radiation at the satellite detector GLAST are discussed.

hep-ph↗

arXiv2005

Split Light Higgsino from Split Supersymmetry

New version of MSSM scales is discussed. In this version mu << M_{SUSY} ~ M_0 \~ M_{1/2}, where mu is the Higgsino mass, M_0 is the mass scale of sleptons and squarks, M_{1/2} is the mass scale of gaugino. Renormalization group motivation of this MSSM version is proposed. Analysis of Split Supersymmetry ideas in this case together with the Dark Matter arguments results in the statement that the formation of residual neutralino concentration occurs in the high symmetric phase of cosmological plasma. The value of Higgsino mass is estimated. The recharging process for high energy neutralinos in the neutralino-nucleus scattering is considered. There has been reported the possibility to check-up of the model predictions at modern experimental facilities NUSEL and GLAST.

hep-ph↗