Alexander Belyaev

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Simian immunodeficiency virus (SIV) is closely related to human immunodeficiency virus (HIV), their matrix antigens (MAs) sharing some 50% sequence identity. MA is a component of Pr55Gag, the sole protein required for assembly of the virion shell. MA targets Pr55 to the plasma membrane, and facilitates incorporation of the virus envelope protein and(More)
We perform a detail theoretical study including decays and jet fragmentation of all the important modes of the single top quark production and all basic background processes at the upgraded Tevatron and LHC colliders. Special attention was paid to the complete tree level calculation of the QCD fake background which was not considered in the previous(More)
Recently, refinements have been made on both the theoretical and experimental determinations of i.) the mass of the lightest Higgs scalar, ii.) the relic density of cold dark matter in the universe, iii.) the branching fraction for the radiative b → sγ decay, iv.) the muon anomalous magnetic moment, and v.) the flavor violating decay Bs → µ + µ −. In this(More)
Shape interrogation methods are of increasing interest in geometric modeling as well as in computer graphics. Originating 20 years ago from CAD/CAM applications where " class A " surfaces are required and no surface imperfections are allowed, shape interrogation has become recently an important tool for various other types of surface representations such as(More)
We evaluate the relic density of neutralinos in the minimal supergravity (mSUGRA) model. All 2 → 2 neutralino annihilation diagrams, as well as all processes involving sleptons, charginos, neutralinos and third generation squarks are included. Rel-ativistic thermal averaging of the velocity times cross sections is performed. We find that co-annihilation(More)
In supersymmetric models with gravity-mediated SUSY breaking, universality of soft SUSY breaking sfermion masses m 0 is motivated by the need to suppress unwanted flavor changing processes. The same motivation, however, does not apply to soft breaking Higgs masses, which may in general have independent masses from matter scalars at the GUT scale. We explore(More)
We present an updated assessment of the viability of t − b − τ Yukawa coupling unification in supersymmetric models. For the superpotential Higgs mass parameter µ > 0, we find unification to less than 1% is possible, but only for GUT scale scalar mass parameter m 16 ∼ 8 − 20 TeV, and small values of gaugino mass m 1/2 < ∼ 400 GeV. Such models require that a(More)
CompHEP, as a partonic event generator, and PYTHIA, as a generator of final states of detectable objects, are interfaced. Thus, integrated tool is proposed for simulation of (almost) arbitrary collision processes at the level of detectable particles. Exact (multiparti-cle) matrix elements, convolution with structure functions, decays, partons hadronization(More)