Scientific article
Open access

Total cross section in γγ collisions at LEP

ContributorsL3 Collaboration
Published inPhysics letters. B, vol. 519, no. 1-2, p. 33-45
Publication date2001

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.

Citation (ISO format)
L3 Collaboration. Total cross section in <em>γγ</em> collisions at LEP. In: Physics letters. B, 2001, vol. 519, n° 1-2, p. 33–45. doi: 10.1016/S0370-2693(01)01072-3
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Article (Published version)
ISSN of the journal0370-2693

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