First Measurement of Proton-Proton Elastic Scattering at RHIC
Abstract
The first result of the pp2pp experiment at RHIC on elastic scattering of polarized protons at sqrts = 200 GeV is reported here. The exponential slope parameter b of the diffractive peak of the elastic cross section in the t range 0.010 <= |t| <= 0.019 (GeV/c)2 was measured to be b = 16.3 +- 1.6 (stat.) +- 0.9 (syst.) (GeV/c)-2 .
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