A Measurement of CP Violating Asymmetries in B0-->f0(980)K0s Decays

Details A Measurement of CP Violating Asymmetries in B0-->f0(980)K0s Decays A Measurement of CP Violating Asymmetries in B0-->f0(980)K0s Decays

2004-08-18

arxiv.org/abs/hep-ex/0408095v1

Physics

High Energy Physics

High Energy Physics - Experiment

16 pages, 7 figures. Contributed to ICHEP 2004

Scientific paper

We present preliminary measurements of the CP-violating asymmetries in the decay $B^0\to f_0(980)(\to\pi^+\pi^{-}) K_s^0$. The results are obtained from a data sample of $209\times10^6$ $\Upsilon(4S) \to B\bar{B}$ decays collected with the BaBar detector at the PEP-II asymmetric-energy $B$ Factory at SLAC. From a time-dependent maximum-likelihood fit we measure the mixing-induced CP violation parameter $S=-0.95^{+0.32}_{-0.23} \pm 0.10$ and the direct CP violation parameter $C=-0.24\pm 0.31 \pm 0.15 $, where the first errors are statistical and the second systematic.

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