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A search for time-dependent B0s-B0s oscillations using exclusively reconstructed D+s at SLD
We set a preliminary 95% C.L. exclusion on the oscillation frequency of B0s-B0s mixing using a sample of 400,000 hadronic Z 0 decays collected by the SLD experiment at the SLC during the 1996–98 run. In this analysis, B0s mesons are partially reconstructed by combining a fully reconstructed Ds with other B0s decay products. The Ds decays are reconstructed via the &phis;π and K*K channels. The b-hadron flavor at production is determined by exploiting the large forward-backward asymmetry of polarized Z0 → bb¯ decays as well as information from the hemisphere opposite to the reconstructed B decay. The flavor of the B0s at the decay vertex is determined by the charge of the D s. A total of 361 candidates passed the final event selection cuts. This analysis excludes the following values of the B0s-B0s mixing oscillation frequency: Δms < 1.4 psec−1 and 2.5 < Δms < 5.3 psec−1 at the 95% confidence level. ^
Physics, Elementary Particles and High Energy
Cheng-Ju Stephen Lin,
"A search for time-dependent B0s-B0s oscillations using exclusively reconstructed D+s at SLD"
(January 1, 2001).
Electronic Doctoral Dissertations for UMass Amherst.