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Title

Total cross section in γγ collisions at LEP

CollaborationWith : Achard, Pablo / Ambrosi, Giovanni / Bourquin, Maurice / Braccini, Saverio / Chamizo Llatas, Maria / Deglon, Patrick / Delmeire, Evelyne / Extermann, Pierre / Field, John / Kienzle, Maria-Novella / Malgeri, Luca / Pohl, Martin
Published in Physics Letters. B. 2001, vol. 519, no. 1-2, p. 33-45
Abstract The reaction e+e-→e+e-γ*γ*→e+e- hadrons for quasi-real photons is studied using data from √s=183 GeV up to 202 GeV. Results on the total cross sections σ(e+e-→e+e- hadrons) and σ(γγ→hadrons) are given for the two-photon centre-of-mass energies 5 GeV⩽Wγγ⩽185 GeV. The total cross section of two real photons is described by a Regge parametrisation. We observe a steeper rise with the two-photon centre-of-mass energy as compared to the hadron–hadron and the photon–proton cross sections. The data are also compared to the expectations of different theoretical models.
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L3 COLLABORATION. Total cross section in γγ collisions at LEP. In: Physics Letters. B, 2001, vol. 519, n° 1-2, p. 33-45. https://archive-ouverte.unige.ch/unige:43901

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Deposited on : 2014-12-19

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