Production of hadrons at large transverse momentum in 200-, 300-, and 400-GeV p-p and p-nucleus collisions
Measurements of the invariant cross section Ed/sup 3/sigma/d/sup 3/p are presented for the production of hadrons (..pi.., K, p, and p-bar) at large transverse momentum (p/sub perpendicular/) by 200-, 300-, and 400-GeV protons incident on H/sub 2/, D/sub 2/, Be, Ti, and W targets. The measurements were made at a laboratory angle of 77 mrad, which corresponds to angles near 90/sup 0/ in the c.m. system of the incident proton and a single nucleon at rest. The range in p/sub perpendicular/ for the data is 0.77 < or = p/sub perpendicular/ < or = 6.91 GeV/c, corresponding to values of the scaling variable x/sub perpendicular/ = 2p/sub perpendicular//..sqrt..s from 0.06 to 0.64. For p-p collisions, the pion cross sections can be represented in the region x/sub perpendicular/ > 35 by the form (1/p/sub perpendicular//sup tsn/)(1 - x/sub perpendicular/)/sup b/, with n = 8 and b = 9. The ratio of ..pi../sup +/ to ..pi../sup -/ production grows as a function of x/sub perpendicular/ to a value larger than 2 at x/sub perpendicular/ > or approx. = 0.5. The ratios of the production of K/sup +/ and protons to ..pi../sup +/ and of K/sup -/ and antiprotons to ..pi../sup -/ also scale with x/sub perpendicular/ for p-p collisions. The K/sup + -/, p, and p-bar fitted values for n and b are given. Particle ratios are also presented for D/sub 2/, Be, Ti, and W targets and the dependences on atomic weight (A) are discussed.
- Research Organization:
- The Enrico Fermi Institute and Department of Physics, University of Chicago, Chicago, Illinois 60637
- OSTI ID:
- 6461198
- Journal Information:
- Phys. Rev., D; (United States), Vol. 19:3
- Country of Publication:
- United States
- Language:
- English
Similar Records
Production of. pi. /sup +/ and. pi. /sup -/ at large transverse momentum in p--p and p--d collisions at 200, 300, and 400 GeV
pi. /sup +/-, K/sup +/-, pp, and p-barp elastic scattering from 50 to 175 GeV/c. [Differential cross sections]
Related Subjects
ANTIPROTONS
PARTICLE PRODUCTION
BERYLLIUM 9 TARGET
PROTON REACTIONS
DEUTERIUM TARGET
KAONS
PIONS
PROTON-PROTON INTERACTIONS
PROTONS
TITANIUM
TUNGSTEN
ANGULAR DISTRIBUTION
CROSS SECTIONS
EXPERIMENTAL DATA
GEV RANGE 100-1000
ISOLATED VALUES
PARTICLE IDENTIFICATION
QUANTUM CHROMODYNAMICS
SCINTILLATION COUNTERS
TRANSVERSE MOMENTUM
ANTIBARYONS
ANTIMATTER
ANTINUCLEI
ANTINUCLEONS
ANTIPARTICLES
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
BARYONS
BOSONS
CHARGED-PARTICLE REACTIONS
DATA
DATA FORMS
DISTRIBUTION
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FERMIONS
FIELD THEORIES
GEV RANGE
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
LINEAR MOMENTUM
MEASURING INSTRUMENTS
MESONS
METALS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PSEUDOSCALAR MESONS
QUANTUM FIELD THEORY
RADIATION DETECTORS
REFRACTORY METALS
STRANGE PARTICLES
TARGETS
TRANSITION ELEMENTS
645103* - High Energy Physics- Particle Interactions & Properties-Experimental- Strong Interactions & Baryon & Meson Properties