Analyzing-power measurement in rvec p n r arrow. pi. sup minus pp( sup 1 S sub 0 ): Pion absorption by quark clusters

Journal Article · Mon Oct 23 04:00:00 EDT 1989 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.63.1792· OSTI ID:5352631

Ponting, C; Hutcheon, D A; Moinester, M A; Walden, P L; Gill, D R; Johnson, R R; Duncan, F; Sheffer, G; Weber, P; Sossi, V; others, and

We have measured analyzing powers in {ital d}({ital {rvec p}},{pi}{sup {minus}}pp)p at a beam energy of 400 MeV and laboratory pion detector angles of 35{degree} and 43{degree}. The {pi}{sup {minus}} and two of the outgoing protons were detected in coincidence in a geometry which selected the quasifree two-body reaction {ital pn}{r arrow}{pi}{sup {minus}}pp({sup 1}S{sub 0}). The analyzing-power data combined with {sup 3}He({pi}{sup {minus}},{ital pn}){ital n} differential cross sections allow determination of the transition amplitudes. The results indicate a significant contribution from a very short-range part of the nucleon-nucleon interaction.

• OSTI ID: 5352631
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 63:17; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

645103 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
651220* -- Nuclear Properties & Reactions
A=1-5
Experimental
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION
AMPLITUDES
ANALYZING POWER
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
BEAMS
BOSONS
BREAKUP REACTIONS
CHARGED-PARTICLE REACTIONS
COINCIDENCE METHODS
COUNTING TECHNIQUES
CROSS SECTIONS
DATA
DEUTERIUM TARGET
DIFFERENTIAL CROSS SECTIONS
DIRECT REACTIONS
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
MESONS
MONTE CARLO METHOD
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEON-NUCLEON INTERACTIONS
NUMERICAL DATA
PARTIAL WAVES
PARTICLE INTERACTIONS
PIONS
POLARIZATION
POLARIZED BEAMS
PROTON REACTIONS
PROTON-NEUTRON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PSEUDOSCALAR MESONS
QUASI-FREE REACTIONS
S WAVES
TARGETS
TRANSITION AMPLITUDES