Download or read book Measurement of CP Asymmetry in B0 to Ks Pi0 Pi0 Decays written by and published by . This book was released on 2007 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the time-dependent CP asymmetry for the neutral B-meson decay into the CP = +1 final state K{sub S}°?°?°, with K{sub S}° →??−. We use a sample of approximately 227 million B-meson pairs recorded at the?(4S) resonance with the BABAR detector at the PEP-II B-Factory at SLAC. From an unbinned maximum likelihood fit we extract the mixing-induced CP-violation parameter S = 0.72 ± 0.71 ± 0.08 and the direct CP-violation parameter C = 0.23 ± 0.52 ± 0.13, where the first uncertainty is statistical and the second systematic.