Study of the Decay B0 (anti-B0) -]rho+rho- and Constraints on the CKM Angle Alpha
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2004 |
ISBN-10 | : OCLC:68495711 |
ISBN-13 | : |
Rating | : 4/5 ( Downloads) |
Download or read book Study of the Decay B0 (anti-B0) -]rho+rho- and Constraints on the CKM Angle Alpha written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Using a data sample of 89 million [Upsilon](4S) [yields] B[bar B] decays collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC, the authors measure the B[sup 0]([bar B][sup 0]) [yields] [rho][sup +][rho][sup -] branching fraction as (30 [+-] 4(stat) [+-] 5(syst)) x 10[sup -6] and a longitudinal polarization fraction of f[sub L] = 0.99 [+-] 0.03(stat)[sub -0.03][sup +0.04](syst). They measure the time-dependent-asymmetry parameters of the longitudinally polarized component of this decay as C[sub L] = -0.17 [+-] 0.27(stat) [+-] 0.14(syst) and S[sub L] = -0.42(stat) [+-] 0.14(syst). They present constraints on the CKM angle [alpha].