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Monte-Carlo generator for e+e- annihilation into lepton and hadron pairs with precise radiative corrections

  • A.B. Arbuzov
  • G.V. FedotovichEmail author
  • F.V. Ignatov
  • E.A. Kuraev
  • A.L. Sibidanov
Theoretical Physics

Abstract

Recently, various cross sections of e+e- annihilation into hadrons were accurately measured in the energy range from 0.37 to 1.39 GeV with the CMD-2 detector at the VEPP-2M collider. In the π+π- channel a systematic uncertainty of 0.6% has been achieved. A Monte-Carlo Generator Photon Jets (MCGPJ) was developed to simulate events of Bhabha scattering as well as production of two charged pions, kaons and muons. Based on the formalism of structure functions, the leading logarithmic contributions related to the emission of photon jets in the collinear region are incorporated into the MC generator. Radiative corrections (RC) in the first order of α are accounted for exactly. The theoretical precision of the cross sections with RC is estimated to be better than 0.2%. Numerous tests of the program as well as a comparison with other MC generators and CMD-2 experimental data are presented.

Keywords

Field Theory Elementary Particle Quantum Field Theory Energy Range Structure Function 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • A.B. Arbuzov
    • 1
  • G.V. Fedotovich
    • 2
    Email author
  • F.V. Ignatov
    • 2
  • E.A. Kuraev
    • 1
  • A.L. Sibidanov
    • 2
  1. 1.Bogoliubov Laboratory of Theoretical PhysicsJINRDubnaRussia
  2. 2.Budker Institute for Nuclear PhysicsNovosibirskRussia

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