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Measurement of the Cross-Section for the Process $\gamma-\gamma$ to Proton-Antiproton at $\sqrt{s_{ee}}$ = 183 - 189 GeV with the OPAL Detector at LEP
The exclusive production of proton-antiproton pairs in the collisions of two quasi-real photons has been studied using data taken at sqrt(s_ee) = 183 GeV and 189 GeV with the OPAL detector at LEP. Results are presented for proton-antiproton invariant masses, W, in the range 2.15 < W < 3.95 GeV...
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| Lenguaje: | eng |
| Publicado: |
2003
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| Acceso en línea: | https://dx.doi.org/10.1016/j.nuclphysbps.2003.11.051 http://cds.cern.ch/record/630346 |
| Sumario: | The exclusive production of proton-antiproton pairs in the collisions of two quasi-real photons has been studied using data taken at sqrt(s_ee) = 183 GeV and 189 GeV with the OPAL detector at LEP. Results are presented for proton-antiproton invariant masses, W, in the range 2.15 < W < 3.95 GeV. The cross-section measurements are compared with previous data and with recent analytic calculations based on the quark-diquark model. |
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