Study of CP-Violating Asymmetries in B0 --> pi+ pi-, K+ pi- Decays
- SLAC
We present a measurement of the time-dependent CP-violating asymmetries in neutral B decays to the {pi}{sup +}{pi}{sup -} CP eigenstate, and an updated measurement of the charge asymmetry in B{sup 0} {yields} K{sup +} {pi}{sup -} decays. In a sample of 33 million {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the SLAC PEP-II asymmetric B Factory, we find 65{sub -11}{sup +12} {pi}{sup +} {pi}{sup -} and 217 {+-} 18 K{sup +}{pi}{sup -} candidates and measure the asymmetry parameters S{sub {pi}{pi}} = 0.03{sub -0.56}{sup +0.53} {+-} 0.11, C{sub {pi}{pi}} = -0.25{sub -0.47}{sup +0.45} {+-} 0.14, and {Alpha}{sub K{pi}} = -0.07 {+-} 0.08 {+-} 0.02, where the first error is statistical and the second is systematic.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 798909
- Report Number(s):
- SLAC-PUB-9012
- Country of Publication:
- United States
- Language:
- English
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