(. pi. /sup + -/,. pi. /sup + -/p) reaction at 245 MeV

Journal Article · Sat May 01 04:00:00 EDT 1982 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.25.2687· OSTI ID:5017012

Piasetzky, E; Ashery, D; Altman, A; Yavin, A I; Schlepuetz, F W; Powers, R J; Bertl, W; Felawka, L; Walter, H K; Winter, R G; Pluym, J V.D.

The inclusive (..pi../sup + -/,..pi../sup + -/p) reactions on C, Fe, and Bi were studied at 245 MeV in a broad kinematic range by means of coincidence measurement of the outgoing particles. The ..pi..-p angular correlations and proton-energy spectra show features consistent with those expected from quasifree scattering. It is observed that about 80% of the inclusive inelastic scattering cross section at backward pion angles may be attributed to nucleon knockout mechanisms. The results allow identification of the direct quasifree process, unperturbed by higher order effects, which accounts for 30, 20, and 15% of the C, Fe, and Bi inclusive (..pi../sup +/,..pi../sup +/) differential cross sections, respectively. The ratio of positive to negative pion cross sections for quasifree scattering, integrated over the proton energy and angle, are in agreement with the ratio for free ..pi..-p scattering. Such is not the case for various proton angles. The deviation of the positive to negative ratio at the peak of the proton angular correlation from the free scattering ratio is most pronounced for more forward pion angles.

• Research Organization: Physic Department, Tel Aviv University, Tel Aviv, Israel
• OSTI ID: 5017012
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 25:5; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR CORRELATION
BARYONS
BISMUTH
CARBON
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
CORRELATIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
DIRECT REACTIONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
HADRON REACTIONS
HADRONS
INCLUSIVE INTERACTIONS
INELASTIC SCATTERING
INFORMATION
INTERACTIONS
IRON
KNOCK-OUT REACTIONS
MESON REACTIONS
METALS
MEV RANGE
MEV RANGE 100-1000
NONMETALS
NUCLEAR REACTIONS
NUCLEONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PION MINUS REACTIONS
PION PLUS REACTIONS
PION REACTIONS
PROTONS
QUASI-FREE REACTIONS
SCATTERING
TRANSITION ELEMENTS