Search for charm production in 17 GeV/c PI p-interactions

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6210924

Crandall, E S

This dissertation reports a search for charm produced in 17 GeV/c PI-p interactions. The experiment was conducted at the Multiparticle Spectrometer facility of the Brookhaven National Laboratory. We looked for the following three final states: a ..lambda../sub c//sup +/ produced in association with a D/sup -/, D/sup 0/D/sup -/p and D + d/sup -/n. The D/sup -/ was required to decay semileptonically providing a single trigger electron. Electron identification was aided by two transition radiation detectors and two lead-acrylic shower detectors. Various charm decay hypotheses were tested (..lambda../sub c//sup +/ ..-->.. kappa/sup 0/p, ..lambda../sub c//sup +/ ..-->.. ..lambda.. PI/sup +/PI/sup +/PI/sup -/, ..lambda../sub c//sup +/ ..-->.. ..lambda.. PI/sup +/, D/sup +/ ..-->.. kappa/sup 0/PI/sup +/, and D/sup 0/ ..-->.. kappa/sup 0/PI/sup +/PI/sup -/) by assembling an effective mass from pattern recognized charged prongs. We find an upper limit (3 sigma) of 1.63 ub. for associated production, 1.49 ub. for the D/sup 0/D/sup -/p final state, and 1.58 ub. for the D/sup +/D/sup -/n final state.

• Research Organization: State Univ. of New York, Stony Brook (USA)
• OSTI ID: 6210924
• Country of Publication: United States
• Language: English

Related Subjects

645104* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BOSONS
CHARM PARTICLES
CHARMED MESON RESONANCES
CROSS SECTIONS
D RESONANCES
D-1865 RESONANCES
DATA
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
HYPERONS
INFORMATION
INTERACTIONS
KAONS
LAMBDA PARTICLES
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NEUTRONS
NUCLEONS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PIONS
POSTULATED PARTICLES
PROTONS
PSEUDOSCALAR MESONS
RESONANCE PARTICLES
STRANGE PARTICLES