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Differential cross section for the reaction. pi. /sup -/p. -->. eta/sup 0/n at 3. 3 GeV/c

Journal Article · · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)
OSTI ID:6500396
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The differential cross section for the reaction ..pi../sup -/p..-->.. eta/sup 0/n, eta..--> gamma gamma.., has been measured for pions with momentum 3.3 GeV/c in the region of momentum transfers from t/sub min/ to 0.3 (GeV/c)/sup 2/. The experiment reveals an appreciable minimum in the forward direction, indicating a substantial role of the amplitude with helicity change. The experimental data were fitted by means of the formula dsigma/dt =A (1--g/sup -1/ct) e/sup c/t, where g is the ratio of the contributions of the scattering amplitudes with and without spin flip. The following values are found for the quantities A, g, and c: A=139 +- 22..mu..b/(GeV/c)/sup 2/, g= (18.6 +- 4.4) %, and c =5.86 +- 0.36 (GeV/c)/sup -2/.
Research Organization:
Joint Institute for Nuclear Research
OSTI ID:
6500396
Journal Information:
Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 27:2; ISSN SJNCA
Country of Publication:
United States
Language:
English

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Related Subjects

645104* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BARYONS
BOSONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
ETA MESONS
FERMIONS
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
HADRONS
HELICITY
INTERACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NEUTRONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PSEUDOSCALAR MESONS
SCATTERING AMPLITUDES