A.V. Belyaev
Joint Institute for Nuclear Research
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Featured researches published by A.V. Belyaev.
Physics Letters B | 2010
G. Agakichiev; A. Balanda; D. Belver; A.V. Belyaev; A. Blanco; M. Böhmer; J. L. Boyard; P. Braun-Munzinger; P. Cabanelas; E. Castro; S. Chernenko; T. Christ; M. Destefanis; J. Diaz; F. Dohrmann; A. Dybczak; L. Fabbietti; O. Fateev; P. Finocchiaro; P. Fonte; J. Friese; I. Fröhlich; T. Galatyuk; J. A. Garzón; R. Gernhäuser; A. Gil; C. Gilardi; K. Göbel; M. Golubeva; D. González-Díaz
Abstract We report measurements of electron pair production in elementary p + p and d + p reactions at 1.25 GeV / u with the HADES spectrometer. For the first time, the electron pairs were reconstructed for n + p reactions by detecting the proton spectator from the deuteron breakup. We find that the yield of electron pairs with invariant mass M e + e − > 0.15 GeV / c 2 is about an order of magnitude larger in n + p reactions as compared to p + p . A comparison to model calculations demonstrates that the production mechanism is not sufficiently described yet. The electron pair spectra measured in C + C reactions are compatible with a superposition of elementary n + p and p + p collisions, leaving little room for additional electron pair sources in such light collision systems.
European Physical Journal A | 2014
G. Agakishiev; O. W. Arnold; A. Balanda; D. Belver; A.V. Belyaev; J.C. Berger-Chen; A. Blanco; M. Böhmer; J. L. Boyard; P. Cabanelas; S. Chernenko; A. Dybczak; E. Epple; L. Fabbietti; O. Fateev; P. Finocchiaro; P. Fonte; J. Friese; I. Fröhlich; T. Galatyuk; J. A. Garzón; R. Gernhäuser; K. Göbel; M. Golubeva; D. González-Díaz; F. Guber; M. Gumberidze; T. Heinz; T. Hennino; R. Holzmann
Abstract.Results on
Physical Review Letters | 2015
G. Agakishiev; A. Lebedev; L. Naumann; M. Palka; F. Guber; H. Kuc; B. Spruck; S. Lang; H. Tsertos; A. Sadovsky; L. Fabbietti; A. Blanco; I. Fröhlich; J. Wüstenfeld; V. Pechenov; A.V. Belyaev; O. W. Arnold; J. Stroth; O. Pechenova; M. Traxler; Y. Parpottas; A. Rustamov; K. Göbel; B. Ramstein; A. Reshetin; V. Metag; A. Tarantola; B. Michalska; V. Wagner; C. Müntz
Lambda
HADRON 2009: Proceedings of the XIII International Conference on Hadron Spectroscopy | 2010
A. Kugler; A. Balanda; D. Belver; A.V. Belyaev; A. Blanco; M. Böhmer; J. L. Boyard; P. Braun-Munzinger; P. Cabanelas; E. Castro; S. Chernenko; J. Díaz; A. Dybczak; E. Epple; L. Fabbietti; O. Fateev; P. Finocchiaro; P. Fonte; J. Friese; I. Fröhlich; T. Galatyuk; J. A. Garzón; R. Gernhäuser; A. Gil; M. Golubeva; D. González-Díaz; F. Guber; T. Hennino; R. Holzmann; P. Huck
hyperon production are reported for collisions of p(3.5 GeV) + Nb , studied with the High-Acceptance Di-Electron Spectrometer (HADES) at SIS18 at GSI Helmholtzzentrum for Heavy-Ion Research, Darmstadt. The transverse mass distributions in rapidity bins are well described by Boltzmann shapes with a maximum inverse slope parameter of about 90 MeV at a rapidity of y = 1.0, i.e. slightly below the center-of-mass rapidity for nucleon-nucleon collisions,
Nuclear Physics | 2009
A. Balanda; D. Belver; A.V. Belyaev; A. Blanco; M. Böhmer; J. L. Boyard; P. Braun-Munzinger; P. Cabanelas; E. Castro; S. Chernenko; J. Diaz; A. Dybczak; E. Epple; L. Fabbietti; O. Fateev; P. Finocchiaro; P. Fonte; J. Friese; I. Fröhlich; T. Galatyuk; J. A. Garzón; R. Gernhäuser; A. Gil; M. Golubeva; D. González-Díaz; F. Guber; T. Hennino; R. Holzmann; P. Huck; A. Ierusalimov
y_{cm}=1.12
Nuclear Physics | 2010
R. Holzmann; A. Balanda; D. Belver; A.V. Belyaev; A. Blanco; M. Böhmer; J. L. Boyard; P. Braun-Munzinger; P. Cabanelas; E. Castro; S. Chernenko; J. Diaz; A. Dybczak; E. Epple; L. Fabbietti; O. Fateev; P. Finocchiaro; P. Fonte; J. Friese; I. Fröhlich; T. Galatyuk; J. A. Garzón; R. Gernhäuser; A. Gil; M. Golubeva; D. González-Díaz; F. Guber; T. Hennino; P. Huck; A. Ierusalimov
. The rapidity density decreases monotonically with increasing rapidity within a rapidity window ranging from 0.3 to 1.3. The
