2005/04/26 by A. B. Arbuzov, A.B. Arbuzov, G. V. Fedotovich +7 · 2 citations
Physics and Astronomy · #Annihilation #Bhabha scattering #Event generator #Formalism (music) #Hadron #Lepton #Neutrino Physics Research #Particle physics theoretical and experimental studies #Photon #Quantum Chromodynamics and Particle Interactions #Radiative transfer #hep-ph
paper · pdf · doi:10.1140/epjc/s2006-02532-8
published as Eur.Phys.J.C46:689-703,2006 · LaTeX, 23 pages with 18 figures
arxiv created 2005/04/26 · openalex publication_date 2006/04/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 pi+pi- channel a systematic uncertainty of 0.6% has been achieved. A Monte-Carlo Generator Photon Jets (MCGPJ) was developed to simulate events of the 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 alpha 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 comparison with other MC generators and CMD-2 experimental data are presented.