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Investigation of the reaction. pi. /sup -/p. -->. eta'n in the momentum region from 15 to 40 GeV/c

Journal Article · · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)
OSTI ID:5470635
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The cross sections of the reaction ..pi../sup -/p..-->..eta'(958)n, eta'--2..gamma.. were measured at the momenta 15, 20, 25, 30, and 40 GeV/c. The experiments were performed on the 70-GeV IHEP accelerator using the NICE 648-channel hodoscopic spectrometer. A total of 6000 eta' mesons were registered. The observed dip of the differential cross sections of the reactions ..pi..'p..-->..eta'n and ..pi../sup -/p..-->..etan as functions of t are identical. The ratio R(eta'/eta)/sub t/=0=0.55 +- 0.06 of the cross sections of these reactions yields the angle ..beta..=-(18.2 +- 1.4)/sup 0/ of the singlet-octet mixing of the pseudoscalar mesons.
Research Organization:
Joint Experiment of Institute of High Energy Physics (Serpukhov, USSR) and CERN (Geneva, Switzerland)
OSTI ID:
5470635
Journal Information:
Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 30:2; 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
BOSONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
ETA-958 RESONANCES
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
MIXING RATIO
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PSEUDOSCALAR MESONS
RESONANCE PARTICLES