Study of charged particles associated with high P/sub T/ photons and. pi. /sup o/'s

Conference · Wed Jul 01 04:00:00 EDT 1981

OSTI ID:5195885

Anassontzis, E; Karabarbounis, A; Kourkoumelis, C

We report on measurements of charged particles associated with high P/sub T/ photons and neutral pions produced in pp collisions at ..sqrt..s = 63 GeV. The experiment was done in the Axial Field Spectrometer at the CERN ISR and used lead-liquid argon shower counters to trigger on and identify photons and ..pi../sup o/'s. We give preliminary results on the angular correlation of charged particles with the trigger particle, on two particle rapidity correlations, and on the relative density of positive and negative particles opposite the trigger particle. We show evidence that high P/sub To/..gamma..'s are produced with significantly fewer nearby charged particles than are ..pi../sup o/'s, and that there is an enhancement of positive particles associated with ..gamma.. events.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5195885
• Report Number(s): BNL-31121; CONF-810760-18; ON: DE82013847
• 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
BARYON-BARYON INTERACTIONS
BOSONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
GAMMA RADIATION
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
IONIZING RADIATIONS
LINEAR MOMENTUM
MASSLESS PARTICLES
MESONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHOTONS
PIONS
PIONS NEUTRAL
PROMPT GAMMA RADIATION
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
PSEUDOSCALAR MESONS
RADIATIONS
TRANSVERSE MOMENTUM