Showing papers by "Alexander Pukhov published in 2002"
TL;DR: In this article, a code that calculates the relic density of the lightest supersymmetric particle (LSP) in the minimal supersymmymmetric standard model is presented, where all tree level processes for the annihilation of the LSP are included as well as all possible coannihilation processes with neutralinos, charginos, sleptons, squarks and gluinos.
642 citations
29 Jan 2002
TL;DR: In this paper, an integrated tool is proposed for simulation of (almost) arbitrary collision processes at the level of detectable particles. And the PEVLIB library of event generators for LHC processes is described.
Abstract: 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 (multiparticle) matrix elements, convolution with structure functions, decays, partons hadronization and (optionally) parton shower evolution are basic stages of calculations. The PEVLIB library of event generators for LHC processes is described.
36 citations
Posted Content•
TL;DR: In this paper, a lower bound on the neutralino mass was obtained for SUSY models with non-unified gaugino masses, where the authors concentrate on the slepton/gaugino sector.
Abstract: We discuss constraints on SUSY models with non-unified gaugino masses. We concentrate on the slepton/gaugino sector and obtain a lower limit on the neutralino mass combining direct limits, indirect limits as well as relic density measurements.
19 citations
16 Dec 2002
TL;DR: In this paper, a lower bound on the neutralino mass was obtained for SUSY models with non-unified gaugino masses, where the authors concentrate on the slepton/gaugino sector.
Abstract: We discuss constraints on SUSY models with non-unified gaugino masses. We concentrate on the slepton/gaugino sector and obtain a lower limit on the neutralino mass combining direct limits, indirect limits as well as relic density measurements.
3 citations
29 Jan 2002
TL;DR: In this article, a special polarization basis for spinor particles is constructed, which produces compact expressions for tensor products of basis spinors, and a method for symbolic evaluation of Feynman amplitudes is presented.
Abstract: We present a method for symbolic evaluation of Feynman amplitudes. We construct special polarization basis for spinor particles which produces compact expressions for tensor products of basis spinors.
2 citations