We present a measurement of time-dependent CP asymmetries and an updated determination of the CP-odd fraction in the decay B0→D*+D*- using a data sample of 88×10^6BB̅ pairs collected by the BABAR detector at the PEP-II B Factory at SLAC. We determine the CP-odd fraction to be 0.063±0.055(stat)±0.009(syst). The time-dependent CP asymmetry parameters Im(λ+) and |λ+| are determined to be 0.05±0.29(stat)±0.10(syst) and 0.75±0.19(stat)±0.02(syst), respectively. The standard model predicts these parameters to be -sin2β and 1, respectively, in the absence of penguin diagram contributions.
Measurement of time-dependent CP asymmetries and the CP-odd fraction in the decay B-0 -> D*+D*-
MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;SIMI, GABRIELE;
2003
Abstract
We present a measurement of time-dependent CP asymmetries and an updated determination of the CP-odd fraction in the decay B0→D*+D*- using a data sample of 88×10^6BB̅ pairs collected by the BABAR detector at the PEP-II B Factory at SLAC. We determine the CP-odd fraction to be 0.063±0.055(stat)±0.009(syst). The time-dependent CP asymmetry parameters Im(λ+) and |λ+| are determined to be 0.05±0.29(stat)±0.10(syst) and 0.75±0.19(stat)±0.02(syst), respectively. The standard model predicts these parameters to be -sin2β and 1, respectively, in the absence of penguin diagram contributions.File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
