Combined SLD Measurement of Ab at the Z0 Resonance using Various Techniques | Zendy

Glen D. Crawford | Zendy

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Combined SLD Measurement of Ab at the Z0 Resonance using Various Techniques

Author(s) -

Glen D. Crawford

Publication year - 1999

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/10212

Subject(s) - lepton , vertex (graph theory) , particle physics , physics , hadron , electron–positron annihilation , charge (physics) , quark , nuclear physics , parity (physics) , resonance (particle physics) , combinatorics , mathematics , graph , electron

We present a new preliminary combination of measurements of the parity-violation parameter A_b made by the SLD collaboration using various experimental techniques. The techniques differ in detail, but in general a sample of b anti-b events is selected or enhanced by using the topologically reconstructed mass of the separated vertices formed by decaying B hadrons. The direction of the b(anti-b) quark is signed by one of four final state tags: jet charge, vertex charge, leptons, or identified K⁼ from the b vertex. We account for statistical and systematic correlations between the four analyses to arrive at our combined result: A_b = 0.905 ± 0.017(stat) ± 0.020(syst)

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