Study of the energy dependence of certain single particle inclusive cross sections at beam momenta between 4 and 20 GeV/c
An experiment to measure the energy dependence of hadronic single particle inclusive processes a + b ..-->.. c + X,X = all additional secondaries, using a magnetic, single-arm, multiwire proportional chamber spectometer is described. Cross sections integrated over secondary momenta between 300 MeV/c and 600 MeV/c and laboratory production angles in delta theta = 62-3.2/p3/sup 0/ are presented from reactions initiated by projectiles a = ..pi../sup + -/, P/sup + -/, p, and anti p. Proton fragment secondaries detected and identified include c = ..pi../sup + -/, K+, and p. Data at projectile (beam) momenta 4, 6, 8, 10, 12, 15, and 20 GeV/c were acquired at the Brookhaven National Laboratory (BNL) Alternating Gradient Synchroron. Cross sections for p+p..--> pi../sup + -/+X rise as energy increases, suggesting study of scaling variables other than s/sup -//sup 1/2/. Data on these reactions produced at the ISR by Capiluppi et al., with s /sup 1/2/ = 23.3 GeV, fall below the fits to A + Bs/sup -//sup 1/2/, when integrated over the acceptance employed in this dissertation. Thus, asymptotic cross section values A deduced from BNL data employing the linear (energy)/sup -1/ dependence above are inaccurate for reactions with B not equivalent to O. Ratios of asymptotic energy inclusive cross section do not agree with 200 GeV/c total cross section ratios, in general. If the ISR data are used as estimates of the asymptotic limits of proton-induced inclusive pion production, it is found that A(p+p..--> pi../sup -/+X)/A(..pi../sup +/+p..--> pi../sup -/+X)=sigma/sub TOT/(p, p)/sigma/sub TOT/(..pi../sup +/, p) since in this experiment ..pi../sup +/+p..--> pi../sup -/+X displays no energy dependence.
- Research Organization:
- Pennsylvania Univ., Philadelphia (USA)
- OSTI ID:
- 5468563
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
645104 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BARYON-BARYON INTERACTIONS
BARYONS
BOSONS
BROOKHAVEN AGS
CROSS SECTIONS
CYCLIC ACCELERATORS
DATA
ELEMENTARY PARTICLES
ENERGY DEPENDENCE
EXPERIMENTAL DATA
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
INCLUSIVE INTERACTIONS
INFORMATION
INTERACTIONS
KAON MINUS-PROTON INTERACTIONS
KAON PLUS-PROTON INTERACTIONS
KAON-NUCLEON INTERACTIONS
KAON-PROTON INTERACTIONS
KAONS
KAONS PLUS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NUCLEON-ANTINUCLEON INTERACTIONS
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PION MINUS-PROTON INTERACTIONS
PION PLUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PIONS
PIONS MINUS
PIONS PLUS
PROTON-ANTIPROTON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
PROTONS
PSEUDOSCALAR MESONS
STRANGE PARTICLES
SYNCHROTRONS