Surprising proton–proton data from CERN
DOI: 10.1063/1.3022876
Although the CERN Intersecting Storage Rings have barely been turned on, exciting experimental data are already pouring out. Carlo Rubbia (Harvard) reported, first at the Washington APS meeting and more recently, with additional data, at the Amsterdam International Conference on Elementary Particles on 2 July, surprising results from elastic proton–proton scattering. The experiment was done by a collaboration from Aachen, CERN, Harvard, Genoa and Torino. They measured the scattering for center‐of‐mass energies of 30.4, 45.0 and, more recently at 56 GeV (which is equivalent to performing a conventional high‐energy scattering experiment at about 1400 GeV). Their determination of the slope parameter is in complete contradiction with the predictions of a naive formulation of Regge theory.
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