PROTON-PROTON SCATTERING AT 970 Mev.

Journal Article · Mon Feb 24 04:00:00 EST 1964 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.133.B1017· OSTI ID:4102416

Bugg, D V; Oxley, A J; Zoll, J A; Rushbrooke, J G; Barnes, V E; Kinson, J B; Dodd, W P; Doran, G A; Riddiford, L

Proton-proton scattering was studied at 970 Mev using a 1-Bev synchrotron and a 9-in.-diam. liquid-hydrogen bubble chamber; 3945 events were analyzed and cross sections determined for the various reactions. The elastic scattering cross section of 24.8 plus or minus 0.9 mb is significantly higher than the result of Dowell et al. using counters. The two experiments agree on the shape of the angular distribution, but not on its normalization; possible reasons for this are discussed. The elastic scattering angular distribution is peaked strongly forward, but does not agree quantitatively with pure diffraction. Polarization effects observed in the elastic scattering agree with previous and more accurate counter experiments. Inelastic scattering is strongly influenced by the (3/2,3/2,) pi /sup +/ resonance and the peripheral mechanism. Theoretical predictions based on the single-pion exchange model are compared in detail with the experimental results and good quantitative agreement is obtained for small momentum transfers, particularly, for the reaction p + p yields n + p + pi / sup +/. Even for small momentum transfers, asymmetries in the Treiman-Yang test and departure from the expected (1 + 3 cos/sup 2/ theta ) pi /sup +/- P angular distribution indicate that other mechanisms may be important. The cross section for double-pion production at 970 Mev is less than 0.2 mb. (auth)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-18-009173
• OSTI ID: 4102416
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 133; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
BUBBLE CHAMBERS
COUNTERS
CROSS SECTIONS
DIFFRACTION
EFFICIENCY
ENERGY RANGE
HYDROGEN
INTERACTIONS
LIQUIDS
MEV RANGE
MOMENTUM
NEUTRONS
NUCLEAR REACTIONS
OPE MODEL
PARTICLE MODELS
PERIPHERAL COLLISIONS
PHYSICS
PIONS
POLARIZATION
PRODUCTION
PROTONS
REACTION KINETICS
RESONANCE
SCATTERING
SPIN
SYNCHROTRONS
TREIMAN-YANG TEST