Abstract
We present an updated measurement of time-dependent CP asymmetries and the CP-odd fraction in the decay B0→D*+D*- using 232×106BB» pairs collected by the BABAR detector at the SLAC PEP-II B factory. We determine the CP-odd fraction to be 0.125±0. 044(stat)±0.007(syst). The time-dependent CP asymmetry parameters C+ and S+ are determined to be 0.06±0.17(stat)±0. 03(syst) and -0.75±0.25(stat)±0.03(syst), respectively. The standard model predicts these parameters to be 0 and -sinâ□¡2Î, respectively, in the absence of penguin amplitude contributions.
| Original language | English (US) |
|---|---|
| Article number | 151804 |
| Journal | Physical review letters |
| Volume | 95 |
| Issue number | 15 |
| DOIs | |
| State | Published - Oct 7 2005 |
| Externally published | Yes |