| Title: | TOTAL CROSS SECTION IN TWO-PHOTON COLLISIONS AT LEP |
| DOI No: | 10.1142/9789812777157_0029 |
| Source: | PHOTON 2001 (pp 152-157)
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| Author(s): | M. N. KIENZLE-FOCACCI
DPNC, 24 quai Ansermet, 1211 GENEVE 4, Switzerland
on behalf of the L3 Collaboration |
| Abstract: | The reaction e+e- → e+e-γ* γ* → e+e- hadrons for quasi-real photons is studied at LEP by L3 and OPAL collaborations from  up to 202 GeV. Results on the total cross sections σ(e+e- → e+e- hadrons) and σ(γγ → hadrons) are obtained for the two-photon centre-of-mass energies 5 GeV ≤ Wγγ ≤ 185 GeV. The total cross section of two real photons can be described by a Regge parametrisation and compared to the expectations of different theoretical models. |
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