Total hadronic cross-section for photon-photon interactions at LEP

✍ Scribed by Frank Wäckerle

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 520 KB
• Volume: 71
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(98)00369-7

✦ Synopsis

The total hadronic cross-section aT~ for the interaction of real photons, 7V --r hadrons, is extracted from a measurement of the cross-section of the process e+e ---+ e+e--y*-y * --~ (e+e -+ hadrons) using a luminosity function for the photon flux and form factors for extrapolating to Q2 = 0. The data was taken with the OPAL detector at LEP at e+e -centre-of-mass energies V~ee = 161 GeV and 172 GeV. In the energy range 10 g W < 110 GeV the total hadronic TY cross-section a77 is consistent with the Regge behaviour of the total cross-section observed in "yp and hadron-hadron interactions.