Inclusive study of 200 GeV/c pi-neon interactions

Technical Report · Tue Jan 01 04:00:00 EST 1980

DOI:https://doi.org/10.2172/7075740· OSTI ID:7075740

Band, H R

200 GeV/c pi-neon interactions are studied in the Fermilab 30 inch bubble chamber which was filled with a neon - hydrogen mixture (31 molar % neon). Scan results and measurements of a representative event sample yield proton, gamma and pion multiplicities and single particle spectra. R was measured to be 1.21 +- 0.05 for both pi +- and pi/sup 0/. Nearly identical to lower energy measurements, R is strongly dependent on the number of observed protons in the event. KNO scaling is observed for the corrected multiplicity distributions. Scaling, however, appears violated if events with a fixed number of protons are considered. Study of the pion single particle spectra show the excess particle production of the neon target over that of hydrogen is largest in the target fragmentation region and nearly constant (1.28 +- 0.02) in the central production region. The dependence of the pion rapidity distribution on the number of protons is consistent with collisions on either one or two nucleons. The s/sup - 1/2/ dependence of the P/sub parallel/ spectra is very similar to that seen in hydrogen, with limiting fragmentation reached only for beam energies much greater than 200 GeV/c. The proton momentum distribution is energy independent with the protons carrying proportionally less of the bombarding energy as s increases.

• Research Organization: Duke Univ., Durham, NC (USA). Dept. of Physics
• Sponsoring Organization: USDOE
• DOE Contract Number: AS05-76ER03065
• OSTI ID: 7075740
• Report Number(s): DOE/ER/03065-T1
• 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
BASIC INTERACTIONS
BREMSSTRAHLUNG
CHARGED-PARTICLE REACTIONS
DISTANCE
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY RANGE
FLUIDS
GASES
GEV RANGE
GEV RANGE 100-1000
HADRON REACTIONS
INCLUSIVE INTERACTIONS
INTERACTION RANGE
INTERACTIONS
INVARIANCE PRINCIPLES
MESON REACTIONS
MULTIPLE PRODUCTION
MULTIPLICITY
NEON
NONMETALS
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PION REACTIONS
RADIATIONS
RARE GASES
SCALE INVARIANCE
STRONG INTERACTIONS