Observation of quasi two-body production in pion plus proton goes to neutron plus four charged pions at 8 GeV/c

Technical Report · Tue Jan 01 00:00:00 EST 1980

DOI:https://doi.org/10.2172/5635986· OSTI ID:5635986

Wroblicka, W T

The first observation of quasi 2-body production in the backward reaction ..pi../sup -/p ..-->.. n..pi../sup +/..pi../sup +/..pi../sup -/..pi../sup -/ is reported. Data were obtained with an 8-GeV/c pion beam incident on a liquid hydrogen target inside the University of Illinois/Argonne National Laboratory streamer chamber. The chamber was triggered by the interaction of a fast, forward neutral hadron in thick-plate optical spark chambers. Total backward cross sections were derived for the processes ..pi../sup -/p ..-->.. N*/sup 0/ (1520) + rho/sup 0//f/sup 0/, N*/sup 0/ (1670) + rho/sup 0//f/sup 0/, ..delta../sup 0/ (1890) + rho/sup 0//f/sup 0/, and ..delta../sup -/ (1236) + A/sub 2//sup +/. Evidence for a narrow A/sub 1//sup +/ resonance was not seen. Corrections for losses due to finite acceptance were made by Monte Carlo techniques based on a simple baryon exchange model. Comparison is made to another experiment regarding the energy dependence of certain cross sections, and a simple power law behavior is observed. 16 figures, 8 tables.

• Research Organization: Univ. of Illinois at Urbana-Champaign, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: EY-76-C-02-1195
• OSTI ID: 5635986
• Report Number(s): COO-1195-446; TRN: 80-005383
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
PION MINUS-PROTON INTERACTIONS
CROSS SECTIONS
STREAMER SPARK CHAMBERS
EFFICIENCY
F-1260 RESONANCES
MASS
N-1520 RESONANCES
N-1680 RESONANCES
PARTICLE WIDTHS
RHO-765 RESONANCES
DELTA-1890 RESONANCES
A2-1310 RESONANCES
PARTICLE PRODUCTION
DELTA-1236 RESONANCES
CORRECTIONS
EXPERIMENTAL DATA
GEV RANGE 01-10
GRAPHS
ISOLATED VALUES
LINEAR MOMENTUM
MASS SPECTRA
NEUTRONS
PIONS MINUS
PIONS PLUS
SCATTERPLOTS
A1-1070 RESONANCES
A RESONANCES
BARYON RESONANCES
BARYONS
BOSONS
DATA
DATA FORMS
DIAGRAMS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GAS TRACK DETECTORS
GEV RANGE
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
MEASURING INSTRUMENTS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
N RESONANCES
NUCLEONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PIONS
PSEUDOSCALAR MESONS
RADIATION DETECTORS
RESONANCE PARTICLES
SPARK CHAMBERS
SPECTRA
TENSOR MESONS
VECTOR MESONS
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