A measurement of D[sup +] and D[sub s] production in e[sup +]e[sup [minus]] annihilation at [radical]s = 29 GeV
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
- Resource Relation:
- Other Information: Thesis (Ph.D.)
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measurement of the ratio. sigma. ter dot B. tau. (W sup + yields ell sup +. nu. )/. sigma. ter dot B. tau. (Z sup 0 yields ell sup + ell sup minus ) and interpretation at the CERN proton-antiproton collider
Measurement of Absolute Hadronic Branching Fractions of D Mesons and e{sup +}e{sup -}{yields}DD Cross Sections at E{sub c.m.}=3773 MeV
Related Subjects
D MESONS
PARTICLE PRODUCTION
ELECTRON-POSITRON INTERACTIONS
BRANCHING RATIO
TOTAL CROSS SECTIONS
ANNIHILATION
D PLUS MESONS
GEV RANGE 10-100
STATISTICAL DATA
BASIC INTERACTIONS
BOSONS
CHARM PARTICLES
CHARMED MESONS
CROSS SECTIONS
DATA
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
HADRONS
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MESONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PSEUDOSCALAR MESONS
662310* - Weak & Electromagnetic Interactions of Leptons- (1992-)
662420 - Properties of Mesons & Meson Resonances- (1992-)