Hard pair production in large-angle Bhabha scattering |
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| Affiliation: | 1. Centre for Automation and Robotics (CAR UPM-CSIC), Universidad Politecnica de Madrid, Spain;2. VTT - Technical Research Centre of Finland Ltd, Oulu, Finland;3. Faculty of Engineering and Science, University of Agder, Grimstad, Norway;4. Fraunhofer-Institut für Produktionsanlagen und Konstruktionstechnik IPK, Berlin, Germany;5. Comau s.p.a., Robotics and Automation Products, Italy;6. EasyRob, Germany;1. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, China;2. University of Chinese Academy of Sciences, Beijing, China;3. Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, PA;4. Carnegie Mellon University Africa, Kigali, Rwanda;5. Dept. of Computing, The Hong Kong Polytechnic University, Hong Kong, China;1. Hawaiʻi Institute of Geophysics and Planetology, University of Hawaiʻi at Mānoa, Honolulu, Hawaiʻi, United States;2. Astromaterials Research and Exploration Science (ARES) Division, XI3, NASA Johnson Space Center, Houston, TX, United States;3. Département de Géomatique appliquée, Université de Sherbrooke, Québec, Canada;4. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States |
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| Abstract: | The cross section of hard pair production in large-angle Bhabha scattering is calculated in the leading and next-to-leading logarithmic approximations. Eight regions of the collinear kinematics, when the final particles imitate a process of the 2 → 2 type, and three semicollinear regions, when the final particles imitate a process of the 2 → 3 type, are considered. Analytical formulae for differential cross sections are presented. |
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