Comparison of low-P/sub T/ photon production in high- and low-multiplicity collisions at the CERN ISR

Journal Article · Tue Nov 01 04:00:00 EST 1988 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.38.2687· OSTI ID:6723038

Akesson, T; Albrow, M G; Almehed, S; Anassontzis, E; Batley, R; Benary, O; Boeggild, H; Botner, O; Breuker, H; Burkert, V; others, and

Low-transverse-momentum photon production at the CERN ISR is compared in high- and low-multiplicity events. High-transverse-energy pp collisions and low-multiplicity ..cap alpha cap alpha.. and pp collisions are studied. Relative photon-to-charged-track production is found to be the same in pp minimum bias, ..cap alpha cap alpha.. minimum bias, and pp high-transverse-energy collisions, to within 15%. No low-P/sub T/ excess is seen; the limits are dominated by systematic uncertainties.

• Research Organization: Brookhaven National Laboratory, Upton, New York 11973 Cambridge University, Cambridge, United Kingdom CERN, Geneva, Switzerland Institute of Moscow Engineering Physics, Moscow, Union of Soviet Socialist Republics Institute of Nuclear Physics, Novosibirsk, Union of Soviet Socialist Republics Niels Bohr
• OSTI ID: 6723038
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 38:9; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALPHA REACTIONS
BARYON-BARYON INTERACTIONS
BREMSSTRAHLUNG
CALORIMETERS
CESR STORAGE RING
CHARGED-PARTICLE REACTIONS
DRIFT CHAMBERS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
HADRON-HADRON INTERACTIONS
HELIUM 4 TARGET
INTERACTIONS
LINEAR MOMENTUM
MASSLESS PARTICLES
MEASURING INSTRUMENTS
MULTIPLICITY
MULTIWIRE PROPORTIONAL CHAMBERS
NUCLEAR REACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHOTONS
PROPORTIONAL COUNTERS
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
RADIATION DETECTORS
RADIATIONS
STORAGE RINGS
TARGETS
TRANSVERSE MOMENTUM