Download or read book Observation and Polarization of B phiK1 and PhiK 2 written by and published by . This book was released on 2008 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the full BABAR data sample of 465 million B{bar B} pairs, they observe the decays B{sup ±} → [psi]K1(1270){sup ±} and B{sup ±} → [psi]K*2(1430){sup ±}. They measure the branching fractions (6.1 ± 1.6 ± 1.1) x 10−6 and (8.4 ± 1.9 {+-} 0.9) x 10−6 and the fractions of longitudinal polarization 0.46{sub -0.13-0.07}{sup +0.12+0.03} and 0.80{sub -0.10}{sup +0.09} {+-} 0.03, respectively. They also report on the B{sup {+-}} → [psi]K*0(1430){sup {+-}} decay branching fraction of (7.0 {+-} 1.3 {+-} 0.9) x 10−6 and several parameters sensitive to CP violation and interference in the above three decays. Upper limits are placed on the B{sup {+-}} decay rates to final states with [psi] and K1(1400){sup {+-}}, K*(1410){sup {+-}}, K2(1770){sup {+-}}, or K2(1820){sup {+-}}. Understanding the observed polarization pattern requires amplitude contributions from an uncertain source.