Study of charm production in 205-GeV/c hadronic interactions

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5946561

Sarmiento, M V

Hadronic charm production was investigated with a two arm magnetic spectrometer. The experimental strategy was to trigger on the muon from the semileptonic decay of a charm particle in one arm while reconstructing the mass of its associatively produced partner in the other arm. Evidence of charm meson production through several charged particle decay modes is described and model dependent cross sections are obtained. An excess of 184 +/- 57 combinations above background for the D/sup 0/ ..-->.. K/sup -/..pi../sup +/ mode was observed and corresponds to a D/sup 0/ production cross section of 22.3 +/- 6.9 ..mu..b per nucleon. The K..pi pi.. mass plot failed to reveal a significant signal for the D/sup +/-/ ..-->.. K/sup -/+/..pi../sup +/-/..pi../sup +/-/ decay mode. Based on the K..pi pi.. mass plot, the 95% confidence upper limit on the DD vector production cross section is found to be less than 30.5 ..mu..b per nucleon. An effect was observed in the psi..pi.. mass plot. If the authors interpret this effect as the D/sub s/ ..-->.. psi..pi.. decay mode, the ratio of inclusive D/sub s/ to inclusive D/sup 0/ production cross section as a function of the branching ratio D/sub s/ ..-->.. psi..pi.. is also presented.

• Research Organization: Notre Dame Univ., IN (USA)
• OSTI ID: 5946561
• Country of Publication: United States
• Language: English

Related Subjects

645102 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESONS
CROSS SECTIONS
D MESONS
DATA
DECAY
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
KAONS
MESONS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHI-1019 RESONANCES
PIONS
PSEUDOSCALAR MESONS
SEMILEPTONIC DECAY
STRANGE MESONS
STRANGE PARTICLES
WEAK HADRONIC DECAY
WEAK PARTICLE DECAY