Precise Measurement of $B^{0}\to \bar{B^{0}$ Mixing Parameters at the $Υ($S)$

Details Precise Measurement of $B^{0}\to \bar{B^{0}$ Mixing Parameters at the $Υ($S)$ Precise Measurement of $B^{0}\to \bar{B^{0}$ Mixing Parameters at the $Υ($S)$

2000-05-08

arxiv.org/abs/hep-ex/0005013v2

Phys.Lett.B490:36-44,2000

Physics

High Energy Physics

High Energy Physics - Experiment

11 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS

Scientific paper

10.1016/S0370-2693(00)00990-4

We describe a measurement of B^0-B^0bar mixing parameters exploiting a method
of partial reconstruction of the decay chains B0 -> D^{*-}\pi^+ and B0 ->
D^{*-}\rho^+. Using 9.6 x 10^6 BBbar pairs collected at the Cornell Electron
Storage Ring, we find \chi_d = 0.198 +- 0.013 +- 0.014, |y_d|<0.41 at 95%
confidence level, and |Re(\epsilon_B)|<0.034 at 95% confidence level.

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