Confirmation of dip-bump structure in backward. pi. /sup -hyphen/d elastic scattering: Possible evidence for dibaryon resonances

Journal Article · Mon Feb 07 00:00:00 EST 1983 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.50.400· OSTI ID:6259747

Akemoto, M; Baba, K; Endo, I

The backward differential cross section for ..pi../sup -hyphen/d elastic scattering has been measured at incident momenta between 420 and 1160 MeV/c. The data show two bumps at around 670 and 1100 MeV/c, two dips near 630 and 980 MeV/c, and a break at 550 MeV/c. The result of a phenomenological fit is consistent with the existence of three dibaryon resonances in this energy region. A theoretical calculation of Kanai et al. agrees well with the data below 800 MeV/c, but the agreement becomes worse above 800 MeV/c.

• Research Organization: Department of Physics, Hiroshima University, Hiroshima 730, Japan
• OSTI ID: 6259747
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 50:6
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DEUTERIUM TARGET
PION MINUS REACTIONS
DIBARYON RESONANCES
PARTICLE IDENTIFICATION
ELASTIC SCATTERING
ANGULAR DISTRIBUTION
BACKSCATTERING
DIFFERENTIAL CROSS SECTIONS
EXPERIMENTAL DATA
GEV RANGE 01-10
MEV RANGE 100-1000
MULTIWIRE PROPORTIONAL CHAMBERS
BARYON RESONANCES
BARYONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
HADRON REACTIONS
HADRONS
INFORMATION
MEASURING INSTRUMENTS
MESON REACTIONS
MEV RANGE
NUCLEAR REACTIONS
NUMERICAL DATA
PION REACTIONS
PROPORTIONAL COUNTERS
RADIATION DETECTORS
RESONANCE PARTICLES
SCATTERING
TARGETS
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