Download or read book Evidence for B[sup+][yields] J/[psi] P[bar[Lambda] and Search for B[sup 0][yields] J/[psi] P[bar P]. written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have performed a search for the decays B[sup+][yields] J/[psi]p[bar[Lambda]] and B[sup 0][yields] J/[psi]p[bar p] in a data set of (88.9[+-] 1.0) x 10[sup 6][Upsilon](4S) decays collected by the BABAR experiment at the PEP-II e[sup+]e[sup -] storage ring at the Stanford Linear Accelerator Center. Four charged B candidates have been observed with an expected background of 0.21[+-] 0.14 events. The corresponding branching fraction is (12[sub -6][sup+9] x 10[sup -6]), where statistical and systematic uncertainties have been combined. The result can be interpreted as a 90% confidence level (CL) upper limit of 26 x 10[sup -6]. We also find one B[sup 0] candidate, with an expected background of 0.64[+-] 0.17 events, implying a 90% CL upper limit of 1.9 x 10[sup -6].