Download or read book Study of Flavor Tagging with Semi-exclusive Reconstruction of B [right Arrow] D(sigma)X Decays written by Elizabeth Sara Ptacek and published by . This book was released on 2005 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: The BaBar experiment measures CP violation in the B meson system by analyzing the decays of B0B̄0 pairs in which one of the mesons decays into a CP eigenstate. By measuring the decay time distribution separately for B0 and B̄0 decays the CP violating asymmetry and sin 2[beta] can be measured. In order to measure the decay time distribution for the B0 and B̄0 decays, it is necessary to identify the flavor, or tag, of the second B meson. The flavor of the B meson is identified by an algorithm which analyzes physical processes which carry flavor information from its decay. Analyzing new physical processes could potentially improve the efficiency of the tagging algorithm. I tested the effect of adding subtaggers which estimated the flavor of the tag B based on the flavor or the charge of its D0 or Ds daughters. However due to the low yields and high backgrounds of reconstructed D0 and Ds candidates, these subtaggers were not effective at making a net contribution to the tagging process.