Search for narrow p-barp states in the reaction. pi. /sup +/p. -->. delta. /sub f/ /sup + +/p-barp

Journal Article · Mon Apr 07 04:00:00 EST 1980 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.44.909· OSTI ID:5448493

Bionta, R M; Carroll, A S; Edelstein, R M; Green, D R; Makuchowski, E J; Morrissey, S P; Russ, J S; Russell, J J; Sharfman, N; Sutton, R B

The results of a search for narrow p-barp states produced in the baryon-exchange reaction ..pi../sup +/p ..-->.. ..delta../sub f/ /sup + +/p-barp at 9.8 GeV/c are reported. This channel provides an enhanced sensitivity to such states compared with the reaction ..pi../sup -/p ..-->.. ..delta../sub f/ /sup 0/p-barp. We find no evidence for such states at the 20--30-nb level in the mass range 1.9--2.3 GeV/c/sup 2/. Assuming a nucleon-exchange production mechanism, the states which have been reported in ..pi../sup -/p interactions at 2.02 and 2.20 GeV/c/sup 2/ would appear as >5-standard-deviation peaks in this data.

• Research Organization: Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 5448493
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 44:14; ISSN PRLTA
• Country of Publication: United States
• Language: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
ANTIBARYONS
ANTIMATTER
ANTINUCLEI
ANTINUCLEONS
ANTIPARTICLES
ANTIPROTONS
BARYON-EXCHANGE MODELS
BARYONS
BROOKHAVEN AGS
CHERENKOV COUNTERS
CROSS SECTIONS
CYCLIC ACCELERATORS
EFFECTIVE MASS
ELASTIC SCATTERING
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MASS
MASS SPECTRA
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MONTE CARLO METHOD
MULTIWIRE PROPORTIONAL CHAMBERS
NUCLEI
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PERIPHERAL MODELS
PION PLUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PROPORTIONAL COUNTERS
PROTONS
RADIATION DETECTORS
SCATTERING
SCINTILLATION COUNTERS
SPECTRA
SYNCHROTRONS