Study of direct single photons and correlated particles in proton-proton collisions at. sqrt. s = 62. 4 GeV
Conference
·
OSTI ID:5055948
As part of a study of large p/sub T/ phenomena in proton-proton collisions at the CERN ISR, a search for direct single photon production has been performed. A statistical division of the data sample into the fraction consistent with single photon production and the fraction due to multiphoton decays of neutral hadrons is accomplished by measuring the average conversion probability for the sample in a one radiation length thick converter. The fraction of the sample attributable to direct single photon production is < ..gamma../all > = 0.074 +- 0.012 for 6 GeV/c < p/sub T/ < 10 GeV/C, and < ..gamma../all > = 0.26 +- 0.04 for p/sub T/ > 10 GeV/c, with an additional systematic uncertainty of +- 0.05 for both values. It is found that single photons are produced preferentially with no accompanying particles on the same side. The ratio of positive to negative particles on the away side is found to be 3.7 +- 1.2 at high x/sub E/ and p/sub T/ for the single photon events.
- Research Organization:
- European Organization for Nuclear Research, Geneva (Switzerland); Columbia Univ., New York (USA); Oxford Univ. (UK); Rockefeller Univ., New York (USA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76ER02232
- OSTI ID:
- 5055948
- Report Number(s):
- DOE/ER/02232-90; CONF-800724-17
- Country of Publication:
- United States
- Language:
- English
Similar Records
Study of direct single photons and correlated particles in proton-proton collisions at. sqrt. s = 62. 4 GeV (CCOR collaboration)
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Measurement of the transverse momenta of partons and of jet fragmentation as a function of. sqrt. s in p-p collisions: CCOR Collaboration. [31 to 62 GeV]
Conference
·
Mon Dec 31 23:00:00 EST 1979
·
OSTI ID:6788648
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
·
Mon Dec 31 23:00:00 EST 1979
·
OSTI ID:6847690
Measurement of the transverse momenta of partons and of jet fragmentation as a function of. sqrt. s in p-p collisions: CCOR Collaboration. [31 to 62 GeV]
Conference
·
Mon Dec 31 23:00:00 EST 1979
·
OSTI ID:6848216
Related Subjects
645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
CERN ISR
DATA
DATA FORMS
EMISSION
ENERGY RANGE
EXPERIMENTAL DATA
FIELD THEORIES
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
INFORMATION
INTERACTIONS
NUCLEON-NUCLEON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PHOTON EMISSION
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
STORAGE RINGS
TABLES
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
CERN ISR
DATA
DATA FORMS
EMISSION
ENERGY RANGE
EXPERIMENTAL DATA
FIELD THEORIES
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
INFORMATION
INTERACTIONS
NUCLEON-NUCLEON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PHOTON EMISSION
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
STORAGE RINGS
TABLES