Download or read book Measurement of the Polarization in the Decays B[sup 0][yields] J/[psi]K*[sup 0] and B[sub S][sup 0][yields] J/[psi][phi]. written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report on a measurement of the longitudinal polarization fraction in the decay B[sup 0][yields] J/[psi]K*[sup 0] using data collected with the Collider Detector at Fermilab. B[sup 0] mesons are reconstructed through the decay chain B[sup 0][yields] J/[psi] K*[sup 0], J/[psi][yields][mu][sup+][mu][sup[minus]], K*[sup 0][yields] K[sup+][pi][sup[minus]]. A sample of 65[+-] 10 events is used to obtain the result[Lambda][sub L]/[Lambda]= 0.65[+-] 0.10 (stat)[+-] 0.04 (sys). The first measurement of[Lambda][sub L]/[Lambda] in the decay B[sub s][sup 0][yields] J/[psi][phi] is also presented.