Leading particles and diffraction dissociation in 150-GeV/c. pi. /sup -/p interactions

Journal Article · Tue Apr 01 04:00:00 EST 1980 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.21.1726· OSTI ID:5318713

Brick, D; Fong, D; Heller, M; Shapiro, A M; Widgoff, M; Bruyant, F; Lucas, P; Bogert, D; Johnson, M; Burnstein, R; Fu, C; Petersen, D; Robertson, D; Rubin, C; Sard, R; Snyder, A; Tortora, J; Alyea, Jr, E D; Chien, C; Pevsner, A ; Zdanis, R; Barriero, F; Benary, O; Brau, J F; Grunhaus, J; Hafen, A S; Hulsizer, R I; Karshon, U; Kistiakowsky, V; Levy, A; Napier, A; Pless, I A; Silvermann, J P; Trepagnier, P C; Wolfson, J; Yamamoto, R K; Cohn, H O; Jacques, P F; Ou, T C; Plano, R J; Watts, T L; Brucker, E; Koller, E L; Stamer, P E; Taylor, S; Bugg, W; Condo, G; Handler, T; Hart, E; Kraybill, H; Ljung, D; Ludlam, I; Taft, C D

Diffraction dissociation of both the beam and target particles has been observed in 150-GeV/c ..pi../sup -/p interactions in the Fermilab 30-in.-bubble-chamber--proportional-wire-chamber hybrid spectrometer. The dissociations are observed as recoil systems opposite leading particles, the signals of which are separated from background where appropriate by a variant of the Van Hove sector cut, thus allowing the high-mass portion of the spectrum to be observed. Pion dissociation has a cross section of 1758 +- 105 ..mu..b, divided among two-, four-, and six-prong events; some rho/sup 0/ production is seen and comes primarily from the ..pi../sup -/ ..-->.. 2..pi../sup -/..pi../sup +/ channel. The proton dissociation cross section is 1726 +- 100 ..mu..b, again divided among two-, four-, and six-prong events. The final state contains a neutron more frequently than a proton in the two- and six-prong events, a proton more frequently in the four-prong events. Production of ..delta../sup + +/ is observed in the p ..-->.. p..pi../sup +/..pi../sup -/ dissociations.

• Research Organization: Brown University, Providence, Rhode Island 02912
• OSTI ID: 5318713
• Journal Information: Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 21:7; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645104* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON RESONANCES
BARYONS
BOSONS
BUBBLE CHAMBERS
CROSS SECTIONS
DELTA-1236 RESONANCES
DIFFRACTION MODELS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GAS TRACK DETECTORS
GEV RANGE
GEV RANGE 100-1000
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
LEADING PARTICLES
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
MULTIPLICITY
MULTIWIRE PROPORTIONAL CHAMBERS
N RESONANCES
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PROPORTIONAL COUNTERS
QUANTUM NUMBERS
RADIATION DETECTORS
RECOILS
RESONANCE PARTICLES
RHO-765 RESONANCES
VECTOR MESONS