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Compton scattering of quasi-real virtual photons at LEP

CollaborationWith : Achard, Pablo / Bourquin, Maurice / Braccini, Saverio / Chamizo Llatas, Maria / Deglon, Patrick / Delmeire, Evelyne / Echenard, Bertrand / Extermann, Pierre / Field, John / Kienzle, Maria-Novella / Natale, Sonia / Pohl, Martin / Straessner, Arno
Published in Physics letters. B. 2005, vol. 616, no. 3-4, p. 145-158
Abstract Compton scattering of quasi-real virtual photons, γe±→γe±γe±→γe±, is studied with 0.6 fb−1 of data collected by the L3 detector at the LEP e+e−e+e− collider at centre-of-mass energies √s=189-209 GeVs=189–209 GeV. About 4500 events produced by the interaction of virtual photons emitted by e±e± of one beam with e∓e∓ of the opposite beam are collected for effective centre-of-mass energies of the photon–electron and photon–positron systems in the range from √s'=35 GeV up to √s′=175 GeV, the highest energy at which Compton scattering was ever probed. The cross sections of the γe±→γe±γe±→γe± process as a function of √s′ and of the rest-frame scattering angle are measured, combined with previous L3 measurements down to √s′≃20 GeV, and found to agree with the QED expectations
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L3 COLLABORATION. Compton scattering of quasi-real virtual photons at LEP. In: Physics letters. B, 2005, vol. 616, n° 3-4, p. 145-158. doi: 10.1016/j.physletb.2005.04.054 https://archive-ouverte.unige.ch/unige:42203

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Deposited on : 2014-11-27

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