Measurement of the cross-section for the process γγ → pp at √See = 183 – 189 GeV with the OPAL Detector at LEP

✍ Scribed by T. Barillari

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 557 KB
• Volume: 126
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(03)02348-x

✦ Synopsis

The exclusive production of proton-antiproton pairs in the collisions of two quasi-real photons has been studied using data taken at 6 = 183 GeV and 189 GeV with the OPAL detector at LEP. Results are presented for p@ invariant masses, W, in the range 2.15 < W < 3.95GeV. The cross-section measurements are compared with previous data and with recent analytic calculations based on the quark-diquark model.