Actions for Measurement of Ab from the Left-Right Forward-Backward Asymmetry in Z0 Decays using Charged Kaon Tagging [electronic resource].

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Measurement of Ab from the Left-Right Forward-Backward Asymmetry in Z0 Decays using Charged Kaon Tagging [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2004.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
18 pages : digital, PDF file
Additional Creators
Stanford Linear Accelerator Center, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
We present a direct measurement of the parity violating parameter A{sub b} by analyzing the left right forward backward asymmetry of b quarks in polarized Z° decays with a final state kaon charge tag. The 1994-1995 SLD data sample of 100,000 hadronic Z° decays produced with a highly polarized electron beam is used for this analysis. A b-enriched sample is obtained from a vertex mass tag using a CCD based vertex detector. The b quark charge is assigned on the basis of the charge of a kaon from the B decay cascade. The charged kaon is identified by the Cerenkov Ring Imaging Detector. The parameter A{sub b} is extracted by forming a double asymmetry in polarization (left-right) and polar angle (forward-backward), with a preliminary result of A{sub b} = 0.891 ± 0.083{sub stat} ± 0.113{sub sys}.
Report Numbers
E 1.99:slac-pub-7630
slac-pub-7630
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/29/2004.
"slac-pub-7630"
Abe, K.
Type of Report and Period Covered Note
Topical;
Funding Information
AC03-76SF00515
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