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Title: Time Dependent B{sub s}{sup 0} - {bar B}{sub s}{sup 0} Oscillations Using Exclusively Reconstructed D{sub s}{sup +} Decays at SLD

Technical Report ·
DOI:https://doi.org/10.2172/784744· OSTI ID:784744

We set a preliminary 95% C.L. exclusion on the oscillation frequency of B{sub s}{sup 0} - {bar B}{sub s}{sup 0} mixing using a sample of 400,000 hadronic Z{sup 0} decays collected by the SLD experiment at the SLC during the 1996-98 run. In this analysis, B{sub s}{sup 0} mesons are partially reconstructed by combining a fully reconstructed D{sub s} with other B{sub s}{sup 0} decay tracks. The D{sub s} decays are reconstructed via the {phi}{pi} and K*K channels. The b-hadron flavor at production is determined by exploiting the large forward-backward asymmetry of polarized Z{sup 0} {yields} b{bar b} decays as well as information from the hemisphere opposite to the reconstructed B decay. The flavor of the B{sub s}{sup 0} at the decay vertex is determined by the charge of the D{sub s}. A total of 361 candidates passed the final event selection cuts. This analysis excludes the following values of the B{sub s}{sup 0}-{bar B}{sub s}{sup 0} mixing oscillation frequency: {Delta}m{sub s} < 1.5 ps{sup -1}, 2.6 < {Delta}m{sub s} < 4.9 ps{sup -1}, and 10.8 < {delta}m{sub s} < 13.5 ps{sup -1} at the 95% confidence level.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Energy Research (ER) (US)
DOE Contract Number:
AC03-76SF00515
OSTI ID:
784744
Report Number(s):
SLAC-PUB-8598; TRN: US0108562
Resource Relation:
Other Information: PBD: 7 Nov 2000
Country of Publication:
United States
Language:
English