Hadronic production of charmed mesons
Thesis/Dissertation
·
OSTI ID:6407080
An experiment designed to study the associated production of two charmed particles in the hadronic interaction of 200 GeV/c negative pions with a beryllium target are described. A two arm magnetic spectrometer was triggered by a muon in an upper detector arm. Such muons can arise from the semi-leptonic decay of one of the charmed particles. The other charmed particle was detected by an open geometry, forward arm spectrometer. Based on a data sample of 1.18 million events, statistically significant signals for neutral charmed mesons are seen having the correct correlation with the trigger muon charge. The production distribution of these mesons in terms of standard kinematical variables is shown. Cross sections are calculated on the basis of a central production model and linear dependence on the mass number (A) of the target material. The inclusive cross section for charmed (C = +1) neutral mesons is 6.46 +/- 2.31 +/- 2.01 microbarns per nucleon, and the inclusive cross section for anti-charmed (C = -1) neutral mesons is 9.40 +/- 2.87 +/- 2.92 microbarns per nucleon. In both cases, the first error is statistical and the second error is systematic.
- Research Organization:
- Northwestern Univ., Evanston, IL (USA)
- OSTI ID:
- 6407080
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645104* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALKALINE EARTH METALS
BERYLLIUM
CHARGED-PARTICLE REACTIONS
CHARM PARTICLES
CROSS SECTIONS
DATA
DECAY
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
GEV RANGE
GEV RANGE 100-1000
HADRON REACTIONS
INFORMATION
LEPTONS
MASS NUMBER
MESON REACTIONS
METALS
MUONS
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE PRODUCTION
PION MINUS REACTIONS
PION REACTIONS
POSTULATED PARTICLES
SEMILEPTONIC DECAY
WEAK PARTICLE DECAY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALKALINE EARTH METALS
BERYLLIUM
CHARGED-PARTICLE REACTIONS
CHARM PARTICLES
CROSS SECTIONS
DATA
DECAY
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
GEV RANGE
GEV RANGE 100-1000
HADRON REACTIONS
INFORMATION
LEPTONS
MASS NUMBER
MESON REACTIONS
METALS
MUONS
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE PRODUCTION
PION MINUS REACTIONS
PION REACTIONS
POSTULATED PARTICLES
SEMILEPTONIC DECAY
WEAK PARTICLE DECAY