Investigation of higher-mass even-G states from 15-GeV/c. pi. /sup +/d collisions

Journal Article · Tue Apr 01 04:00:00 EST 1980 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.21.1744· OSTI ID:5459347

Bugg, W M; Condo, G T; Handler, T; Hart, E L; Cohn, H O; Hagopian, S; Hagopian, V; Lannutti, J E; Wind, B

From a study of 15-GeV/c ..pi../sup +/-deuterium interactions obtained in an 890 000-picture exposure in the SLAC 82-in. bubble chamber, evidence is presented for at least two broad dipion states beyond the g(1680) region. These states appear in the spectrum representing highly peripheral interactions, and in the spectra obtained by eliminating those interactions for which the transverse momentum of each pion is less than a specified minimum value. Further, examination of the ..pi../sup +/..pi../sup -/MM (missing mass) spectrum from the reaction ..pi../sup +/n ..-->.. p..pi../sup +/..pi../sup -/(MM) indicates that agreement with the previously obtained branching ratios is possible only if higher-mass dipion states are present. Evidence is also presented which suggests a finite decay probability of the g (or a state of similar mass) into ..pi../sup +/..pi../sup -/eta and/or ..pi../sup +/..pi../sup -/eta'.

• Research Organization: Department of Physics, University of Tennessee, Knoxville, Tennessee 37916
• OSTI ID: 5459347
• Journal Information: Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 21:7; ISSN PRVDA
• 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
BOSONS
BRANCHING RATIO
BUBBLE CHAMBERS
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
GAS TRACK DETECTORS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
LINEAR MOMENTUM
MASS
MEASURING INSTRUMENTS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESONS
MISSING MASS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PION-DEUTERON INTERACTIONS
PIONS
PIONS PLUS
PROBABILITY
PSEUDOSCALAR MESONS
RADIATION DETECTORS
RESONANCE PARTICLES
RHO-1670 RESONANCES
TRANSVERSE MOMENTUM