We measured the differential cross section for p̄p and pp elastic scattering in the momentum-transfer range 0.01 <|t| < 1.0 GeV^2 at the CERN Intersecting Storage Rings with center-of-mass energy sqrt(s) = 52.8 GeV. Fitting the differential cross section with an exponential [A exp (bt)], we found b(p pbar) = 13.92 +- 0.59 GeV^(-2) for |t| < 0.05 GeV^2, whilst for |t| > 0.09 GeV2, b(p pbar) = 10.68 +- 0.26 GeV ^(-2). Using the optical theorem, we obtained for the total cross section View the MathML source and, by integrating the differential cross section, we obtained for the total elastic cross section σ_tot(p pbar) = 44.86 +- 0.78 mb. Calculations of σ_tot combining elastic-rate and total-rate measurements are also given. All of these measurements were also performed for pp scattering at the same energy, and the results for both reactions are compared.
Measurement of elastic scattering in antiproton-proton collisions at 52.8 GeV centre-of-mass energy
ANZIVINO, Giuseppina;VALDATA, Marisa
1982
Abstract
We measured the differential cross section for p̄p and pp elastic scattering in the momentum-transfer range 0.01 <|t| < 1.0 GeV^2 at the CERN Intersecting Storage Rings with center-of-mass energy sqrt(s) = 52.8 GeV. Fitting the differential cross section with an exponential [A exp (bt)], we found b(p pbar) = 13.92 +- 0.59 GeV^(-2) for |t| < 0.05 GeV^2, whilst for |t| > 0.09 GeV2, b(p pbar) = 10.68 +- 0.26 GeV ^(-2). Using the optical theorem, we obtained for the total cross section View the MathML source and, by integrating the differential cross section, we obtained for the total elastic cross section σ_tot(p pbar) = 44.86 +- 0.78 mb. Calculations of σ_tot combining elastic-rate and total-rate measurements are also given. All of these measurements were also performed for pp scattering at the same energy, and the results for both reactions are compared.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
