Andrey Guskov

Learn More
The COMPASS experiment at the CERN SPS has studied the diffractive dissociation of negative pions into the π- π- π+ final state using a 190  GeV/c pion beam hitting a lead target. A partial wave analysis has been performed on a sample of 420,000 events taken at values of the squared 4-momentum transfer t' between 0.1 and 1  GeV2/c2. The well-known(More)
The basic tasks of research administration are the registration and monitoring of projects execution. Currently, in Russia there are no centralized solutions for that purpose because of different requirements and regulations in national scientific foundations. The Ministry of Education and Science of Russian Federation initiated a pilot project for creating(More)
The currently existing webometric rankings and methods of their analysis are focused primarily on the quantitative measurement of the contents of websites and almost completely ignore the study of the user audience (web traffic). In a pilot project the traffic of ten websites of scientific organizations has been studied with the emphasis on web-traffic(More)
Research Board. The proposal consists of three main parts: 1) nucleon structure study via DrellYan process using a negative pion beam and transversely polarized proton target 2)nucleon structure study in exclusive positive and negative muon beam scattering off the unpolarized proton target 3)test of the chiral perturbative theory predictions via reactions(More)
A precision measurement of the double-differential production cross-section, dσ + /dpdΩ, for pions of positive charge, performed in the HARP experiment is presented. The incident particles are protons of 12.9 GeV/c momentum impinging on an aluminium target of 5% nuclear interaction length. The measurement of this cross-section has a direct application to(More)
The COMPASS Collaboration at CERN has investigated the π- γ → π- π- π+ reaction at center-of-momentum energy below five pion masses, sqrt[s]<5m(π), embedded in the Primakoff reaction of 190 GeV pions impinging on a lead target. Exchange of quasireal photons is selected by isolating the sharp Coulomb peak observed at smallest momentum transfers, t'<0.001 (More)
The COMPASS collaboration at CERN has investigated pion Compton scattering, π(-)γ→π(-)γ, at center-of-mass energy below 3.5 pion masses. The process is embedded in the reaction π(-)Ni→π(-)γNi, which is initiated by 190 GeV pions impinging on a nickel target. The exchange of quasireal photons is selected by isolating the sharp Coulomb peak observed at(More)
The double-differential production cross-section of positive pions, dσ + /dpdΩ, measured in the HARP experiment is presented. The incident particles are 8.9 GeV/c protons directed onto a beryllium target with a nominal thickness of 5% of a nuclear interaction length. The measured cross-section has a direct impact on the prediction of neutrino fluxes for the(More)
A method for automatic classification of scientific texts based on data compression is proposed. The method is implemented and investigated based on the data from an archive of scientific texts (arXiv.org) and in the CyberLeninka scientific electronic library (CyberLeninka.ru). Experiments showed that the method correctly identified the themes of scientific(More)