Differential cross section for the reaction. pi. /sup -/p-italic. -->. eta/sup 0/. delta. /sup 0/(1232) at momentum 3. 3 GeV/c-italic

Journal Article · Tue Apr 01 04:00:00 EST 1986 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5137654

Arkhipov, V V; Aslanyan, P Z; Astvatsaturov, R G; Ioan, I; Knapik, E; Plyashkevich, S N; Khachaturyan, M N; Khudaverdyan, A G; Chvyrov, A S

The differential cross section for the reaction ..pi../sup -/p-italic..-->..eta/sup 0/..delta../sup 0/(1232) has been measured in the region of momentum transfer from t-italic/sub min/ up to 0.3 (GeV/c-italic)/sup 2/. An appreciable minimum in the differential cross section is observed in the forward direction, which indicates a substantial role of the amplitude with helicity change. The experimental data were fitted by the function d-italicsigma/d-italict-italic = A-italic(1-g-italicC-italict-italic)exp(C-italict-italic), where g-italic is the ratio of the contributions of the scattering amplitudes with and without spin flip. The following values were found for A-italic, g-italic, and C-italic: A-italic = 44.0 +- 1.5 ..mu..b x (GeV/c-italic)/sup -2/, g-italic = 7.6 +- 0.4, C-italic = 4.8 +- 0.6 (GeV/c-italic)/sup -2/. The total cross section for the reaction ..pi../sup -/p-italic..-->..eta/sup 0/..delta../sup 0/(1232) agrees within experimental error with the prediction of isotopic invariance.

• Research Organization: Joint Institute for Nuclear Research
• OSTI ID: 5137654
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 43:4; ISSN SJNCA
• 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
AMPLITUDES
BOSONS
CROSS SECTIONS
DATA
DELTA-1236 RESONANCES
DIFFERENTIAL CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
ETA MESONS
EXPERIMENTAL DATA
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PSEUDOSCALAR MESONS
SCATTERING AMPLITUDES
SPIN FLIP
TOTAL CROSS SECTIONS