Production of hadrons at large transverse momentum in 200-, 300-, and 400-GeV p-p and p-nucleus collisions

Journal Article · Thu Feb 01 00:00:00 EST 1979 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.19.764· OSTI ID:6461198

Antreasyan, D; Cronin, J W; Frisch, H J; Shochet, M J; Kluberg, L; Piroue, P A; Sumner, R L

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), Journal Name: Phys. Rev., D; (United States) Vol. 19:3; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645103* -- High Energy Physics-- Particle Interactions &amp; Properties-Experimental-- Strong Interactions &amp; Baryon &amp; Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
ANTIBARYONS
ANTIMATTER
ANTINUCLEI
ANTINUCLEONS
ANTIPARTICLES
ANTIPROTONS
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
BARYONS
BERYLLIUM 9 TARGET
BOSONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DATA FORMS
DEUTERIUM TARGET
DISTRIBUTION
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
FIELD THEORIES
GEV RANGE
GEV RANGE 100-1000
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
ISOLATED VALUES
KAONS
LINEAR MOMENTUM
MEASURING INSTRUMENTS
MESONS
METALS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
NUMERICAL DATA
PARTICLE IDENTIFICATION
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PIONS
PROTON REACTIONS
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
PROTONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RADIATION DETECTORS
REFRACTORY METALS
SCINTILLATION COUNTERS
STRANGE PARTICLES
TARGETS
TITANIUM
TRANSITION ELEMENTS
TRANSVERSE MOMENTUM
TUNGSTEN