Survival probability of large rapidity gaps in {bar p}p, pp, {gamma}p, and {gamma}{gamma} collisions
Using an eikonal analysis, we simultaneously fit a QCD-inspired parametrization of all accelerator data on forward proton-proton and antiproton-proton scattering amplitudes, together with cosmic ray data (using Glauber theory), to predict proton-air and proton-proton cross sections at energies near s{approx}30 TeV. The p-air cosmic ray measurements greatly reduce the errors in the high energy proton-proton and proton-air cross section predictions -- in turn, greatly reducing the errors in the fit parameters. From this analysis, we can then compute the survival probability of rapidity gaps in high energy {bar p}p and pp collisions, with high accuracy in a quasi-model-free environment. Using an additive quark model and vector meson dominance, we note that the survival probabilities are identical, at the same energy, for {gamma}p and {gamma}{gamma} collisions, as well as for nucleon-nucleon collisions. Significantly, our analysis finds large values for gap survival probabilities: {approx}30% at s=200 GeV, {approx}21% at s=1.8 TeV and {approx}13% at s=14 TeV.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40205133
- Journal Information:
- Physical Review D, Journal Name: Physical Review D Journal Issue: 11 Vol. 63; ISSN 0556-2821
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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