Total cross section for p + p r arrow p + p +. pi. sup 0 near threshold measured with the Indiana Cooler

Journal Article · Mon Dec 03 00:00:00 EST 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.65.2846· OSTI ID:6200959

Meyer, H O; Ross, M A; Pollock, R E; Berdoz, A; Dohrmann, F; Goodwin, J E; Minty, M G; Nann, H; Pancella, P V; Pate, S F; Przewoski, B v; Rinckel, T; Sperisen, F ^[1]

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1. Department of Physics, Indiana University, Bloomington, IN (USA) Indiana University Cyclotron Facility, Indiana University, Bloomington, IN (USA)

The total cross section for the reaction {ital pp}{r arrow}{ital pp}{pi}{sup 0} was measured at nine center-of-mass energies from 1.5 to 23 MeV above threshold. The experiment was carried out with the Indiana Cooler, a recently constructed storage ring. The experimental advantages of an electron-cooled proton beam were utilized. The data cover an energy range where only the lowest possible angular momentum state contributes in the exit channel. The measured energy dependence of the total cross section is not compatible with that predicted by models of {ital s}-wave pion production and rescattering.

• OSTI ID: 6200959
• Journal Information: Physical Review Letters; (USA), Vol. 65:23; ISSN 0031-9007
• Country of Publication: United States
• Language: English

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