Monte Carlo generator photon jets used for luminosity at e^+e^- colliders  

作　　者：G.V.Fedotovich E.A.Kuraev A.L.Sibidanov 

机构地区：[1]Budker Institute of Nuclear Physics [2]Novosibirsk State University [3]Joint Institute of Nuclear Research

出　　处：《Chinese Physics C》2010年第6期877-882,共6页中国物理C（英文版）

基　　金：Supported by INTAS Ref.Nr 05-1000008-8328,INTAS YSF Ref. Nr 06-1000014-6464;the Slovak Grant Agency for Sciences VEGA,Grant Nr 2/7116/27

摘　　要：A Monte-Carlo Generator Photon Jets （MCGPJ） to simulate Bhabha scattering as well as production of two charged muons and two photons events is discussed. The theoretical precision of the cross sections with radiative corrections （RC） is estimated to be smaller than 0.2%. The Next Leading Order （NLO） radiative corrections proportional to α are treated exactly, whereas the all logarithmically enhanced contributions, related to photon jets emitted in the collinear region, are taken into account in frame of the Structure Function approach. Numerous tests of the MCGPJ as well as a detailed comparison with other MC generators are presented.A Monte-Carlo Generator Photon Jets （MCGPJ） to simulate Bhabha scattering as well as production of two charged muons and two photons events is discussed. The theoretical precision of the cross sections with radiative corrections （RC） is estimated to be smaller than 0.2%. The Next Leading Order （NLO） radiative corrections proportional to α are treated exactly, whereas the all logarithmically enhanced contributions, related to photon jets emitted in the collinear region, are taken into account in frame of the Structure Function approach. Numerous tests of the MCGPJ as well as a detailed comparison with other MC generators are presented.

关 键 词：LUMINOSITY e^＋e^- HADRONS detectors 

分 类 号：O572.214[理学—粒子物理与原子核物理]