Measurement of B(d) mixing using opposite-side flavor tagging

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Issue Date
2006-12-15Author
Baringer, Philip S.
Bean, Alice
Coppage, Don
Hensel, Carsten
Moulik, Tania
Wilson, Graham Wallace
Publisher
American Physical Society
Type
Article
Article Version
Scholarly/refereed, publisher version
Metadata
Show full item recordAbstract
We report on a measurement of the B(0)(d) mixing frequency and the calibration of an opposite-side flavor tagger in the D0 experiment. Various properties associated with the b quark on the opposite side of the reconstructed B meson are combined using a likelihood-ratio method into a single variable with enhanced tagging power. Its performance is tested with data, using a large sample of reconstructed semileptonic B→μD(0)X and B→μD∗X decays, corresponding to an integrated luminosity of approximately 1 fb(−1). The events are divided into groups depending on the value of the combined tagging variable, and an independent analysis is performed in each group. Combining the results of these analyses, the overall effective tagging power is found to be εD(2)=(2.48±0.21+0.08 −0.06)%. The measured B(0)(d) mixing frequency Δmd=0.506±0.020(stat)±0.016(syst) ps(−1) is in good agreement with the world average value.
Description
This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.74.112002.
ISSN
1550-7998Collections
Citation
V. M. Abazov et al. (D0 Collaboration). (2006). "Measurement of B(d) mixing using opposite-side flavor tagging." Physical Review D, 74(11):112002. http://dx.doi.org/10.1103/PhysRevD.74.112002
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