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

Journal Article · Tue Jan 31 23:00:00 EST 1978 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6500396

Astvatsaturov, R G; Arkhipov, V V; Boitsova, L S; Zanevskii, Y V; Ivanov, V I; Knapik, E; Kramarenko, V A; Malakhov, A I; Melkumov, G L; Plyashkevich, S N; Peshekhonov, V D; Senner, A E; Smirnov, V A; Starchenko, B M; Khachaturyan, M N

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

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