Study of Rapidity Gap Events in Hadronic Z Decays with the L3 Detector

Parametrization of Bose-Einstein Correlations and Reconstruction of the Source Function in Hadronic Z-boson Decays using the L3 Detector

Hadron Fragmentation Functions and Leading Particle Effects in Hadronic Z Decays: New Results from Sld

We have measured the differential cross sections for the production of π, K, K, K(892), φ(1020), p and Λ in hadronic Z decays and in subsets of flavor-tagged Z → light quark (uū, dd̄, or ss̄) , Z → cc̄ and Z → bb̄ events. Charged hadrons were identified with the SLD Cherenkov ring imaging detector. The vertex detector was employed to select flavor enriched samples and the polarized electron beam fr...

MEASUREMENT OF THE b6 FRACTION IN HADRONIC Z” DECAYS WITH PRECISION VERTEX DETECTORS*

We have measured the fraction of bb events in hadronic 2’ decays, R,g, using the vertex detector system of the Mark II detector at the SLC. We tag bb events by requiring the coincidence of three or more tracks with significant impact parameters. This tag is 50% efficient and results in a sample of 85% purity. We find R,b = 0.251 f 0.049 f 0.030, in good agreement with other measurements and the...

Hadron Fragmentation Functions and Leading Particle Effects in Hadronic Z 0 Decays: New Results from Sld

We have measured the di erential cross sections for the production of , K , K, K (892), (1020), p and in hadronic Z decays and in subsets of avor-tagged Z ! light quark (u u, d d, or s s) , Z0! c c and Z ! b b events. Charged hadrons were identi ed with the SLD Cherenkov ring imaging detector. The vertex detector was employed to select avor enriched samples and the polarized electron beam from ...

Effective Hamiltonian of Electroweak Penguin for Hadronic b Quark Decays

In this research we work with the effective Hamiltonian and the quark model. We investigate the decay rates of matter-antimatter of quark. We describe the effective Hamiltonian theory and apply this theory to the calculation of current-current ( ), QCD penguin ( ), magnetic dipole ( ) and electroweak penguin ( ) decay rates. The gluonic penguin structure of hadronic decays is studied thro...