Observed differences in event structures of high-p/sub T/. pi. /sup 0/ and single photon events produced in pp collisions at the CERN ISR. [. sqrt. s = 31 to 63 GeV, p/sub T/ up to 9 GeV]
Conference
·
OSTI ID:6847690
The direct photon production in pp collisions for c.m. energies 31 less than or equal to 63 GeV and transverse momenta of up to 9 GeV/c were measured at the ISR by use of a segmented lead/liquid argon calorimeter. The observed ..gamma../..pi../sup 0/ ratio was found to be a significantly larger than zero at 4 GeV/c in p/sub T/, increasing to 0.4 at 9 GeV/c. The average multiplicity on the trigger side for the single-photon events was found to be significantly lower than for ..pi../sup 0/ events. The correlations in ..delta..y and ..delta..phi between the trigger particle and an additional particle were found to differe mainly at small ..delta..y and ..delta..phi. 3 figures.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6847690
- Report Number(s):
- BNL-28452; CONF-800724-50
- Country of Publication:
- United States
- Language:
- English
Similar Records
Observed differences in event structures of high-p/sub T/. pi. /sup 0/ and single photon events produced in pp collisions in the CERN ISR
High p/sub T/. pi. /sup 0/ production with. cap alpha cap alpha. and. cap alpha. p beams at the CERN ISR
Study of charged particles associated with high P/sub T/ photons and. pi. /sup o/'s
Journal Article
·
Sat Jan 31 23:00:00 EST 1981
· AIP Conf. Proc.; (United States)
·
OSTI ID:6455272
High p/sub T/. pi. /sup 0/ production with. cap alpha cap alpha. and. cap alpha. p beams at the CERN ISR
Conference
·
Wed Jul 01 00:00:00 EDT 1981
·
OSTI ID:6246107
Study of charged particles associated with high P/sub T/ photons and. pi. /sup o/'s
Conference
·
Wed Jul 01 00:00:00 EDT 1981
·
OSTI ID:5195885
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
CORRELATIONS
DATA
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
MASSLESS PARTICLES
MEASURING INSTRUMENTS
MESONS
MULTIPLE PRODUCTION
MULTIPLICITY
NUCLEON-NUCLEON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHOTONS
PIONS
PIONS NEUTRAL
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
PSEUDOSCALAR MESONS
RADIATION DETECTORS
SHOWER COUNTERS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BOSONS
CORRELATIONS
DATA
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
MASSLESS PARTICLES
MEASURING INSTRUMENTS
MESONS
MULTIPLE PRODUCTION
MULTIPLICITY
NUCLEON-NUCLEON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHOTONS
PIONS
PIONS NEUTRAL
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
PSEUDOSCALAR MESONS
RADIATION DETECTORS
SHOWER COUNTERS