New Measurement of A{sub b} at the Z{sup 0} Resonance Using a Vertex Charge Technique | Zendy

K. Abe | Zendy

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New Measurement of A{sub b} at the Z{sup 0} Resonance Using a Vertex Charge Technique

Author(s) -

K. Abe

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 - 10.2172/10119

Subject(s) - physics , hadron , particle physics , nuclear physics , boson , electron , vertex (graph theory) , electron–positron annihilation , parity (physics) , b meson , elementary particle , resonance (particle physics) , charge (physics) , graph , combinatorics , mathematics

We present a new preliminary measurement of the parity-violation parameter A{sub b} using a self-calibrating vertex-charge technique. In the SLD experiment we observe hadronic decays of Z{sup 0} bosons produced in collisions between longitudinally polarized electrons and unpolarized positrons at the SLAC Linear Collider. A sample of b{bar b} events is selected using the topologically reconstructed mass of B hadrons. From our 1996-1998 data sample of approximately 400,000 hadronic Z{sup 0} decays, we obtain A{sub b} = 0.897 {+-} 0.027(stat){sub -0.034}{sup +0.036}(syst)

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