A measurement of D[sup +] and D[sub s] production in e[sup +]e[sup [minus]] annihilation at [radical]s = 29 GeV
Thesis/Dissertation
·
OSTI ID:7006413
Measurements have been made of the production rates of D[sup +] and D[sub s] mesons via the channels D[sup +] [yields] [bar K][sup *0][ell][sup +][nu][sub [ell]] and D[sub S] [yields] [phi][pi] in e[sup +]e[sup [minus]] annihilation at [radical]s = 29 GeV in 220 pb[sup [minus]1] of data collected by the Mark II detector. The measurements assume the current branching ratios, measured predominantly at [radical]s [approx equal] 10 GeV and by fixed target experiments. Measurements of the total production cross-sections times the appropriate branching ratios, which are independent of any other measurements, and an upper limit for the ratio of branching ratios, [Gamma](D[sub s]) [yields] [phi][pi][bar [nu]][sub [ell]]/[Gamma](D[sub s] [yields] [phi][pi]) < .74 at 90% confidence level are presented. It is found that the production cross-section of D[sup +] mesons is [sigma](e[sup +]e[sup [minus]] [yields] D[sup +]X) = .24[+-].06 [+-].04 nb while the production cross-section for D[sub S] mesons is [sigma](e[sup +]e[sup [minus]] [yields] D[sub s]X) =.10[+-].04[+-].03 nb. This corresponds to .23[+-].06 [+-].06 D[sup +]/hadronic event and .09[+-].04[+-].02 D[sub s]hadronic event.
- Research Organization:
- Colorado Univ., Denver, CO (United States)
- OSTI ID:
- 7006413
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
662310* -- Weak & Electromagnetic Interactions of Leptons-- (1992-)
662420 -- Properties of Mesons & Meson Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESONS
CROSS SECTIONS
D MESONS
D PLUS MESONS
DATA
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
GEV RANGE 10-100
HADRONS
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MESONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PSEUDOSCALAR MESONS
STATISTICAL DATA
TOTAL CROSS SECTIONS
662420 -- Properties of Mesons & Meson Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESONS
CROSS SECTIONS
D MESONS
D PLUS MESONS
DATA
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
GEV RANGE 10-100
HADRONS
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MESONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PSEUDOSCALAR MESONS
STATISTICAL DATA
TOTAL CROSS SECTIONS