Improved Measurement of the CKM Angle Alpha Using B0 to Rho+rho- Decays
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2005 |
ISBN-10 | : OCLC:1061392158 |
ISBN-13 | : |
Rating | : 4/5 ( Downloads) |
Download or read book Improved Measurement of the CKM Angle Alpha Using B0 to Rho+rho- Decays written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present results from an analysis of B° ({bar B}°) →??− using 232 million?(4S) → B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We measure the longitudinal polarization fraction f{sub L} = 0.978 ± 0.014(stat){sub -0.029}{sup +0.021}(syst) and the CP-violating parameters S{sub L} = -0.33 ± 0.24(stat){sub -0.14}{sup +0.08}(syst) and C{sub L} = -0.03 ± 0.18(stat) ± 0.09(syst). Using an isospin analysis of B →?? decays we determine the unitarity triangle?. The solution compatible with the Standard Model is? = (100 ± 13){sup o}.