Download Free A Simultaneous Measurement Of The Branching Fractions Of Ten B To Double Charm Decays Book in PDF and EPUB Free Download. You can read online A Simultaneous Measurement Of The Branching Fractions Of Ten B To Double Charm Decays and write the review.

This dissertation presents a simultaneous measurement of the branching fractions of ten B --> D{sup (*)}{bar D}{sup (*)} decays. The measurements are derived from a sample of 2.32 x 108 B{bar B} pairs collected by the BABAR detector at the PEP-II B Factory located at Stanford Linear Accelerator Center. The branching fractions (x 10−4) are: -0.10 ± 0.44 ± 0.15 (0.59) for B° -- D°{bar D}°; 1.01 ± 1.07 ± 0.35 (2.92) for B° -- D*°{bar D}°; -1.31 ± 1.05 ± 0.41 (0.92) for B° -- D*°{bar D}*°; 2.81 ± 0.43 ± 0.45 for B° --> DD−; 5.72 ± 0.64 ± 0.71 for B° --> D*D−; 8.11 ± 0.57 ± 0.97 for B° --> D*+D*−; 3.76 ± 0.57 ± 0.45 for B− --> D−D°; 3.56 ± 0.52 ± 0.39 for B− --> D*−D°; 6.30 ± 1.32 ± 0.93 for B− --> D−D*°; and 8.14 ± 1.17 ± 1.11 for B− --> D*−D*°. The first uncertainty is statistical while the second is systematic. The number in parentheses is the 90% upper limit using the Feldman-Cousins method with systematic uncertainties taken into account. These measurements are consistent with the Standard Model predictions using the factorization assumption.
We present a study of B semileptonic decays into charm final states based on 211.7 fb{sup -1} of data collected at the {Upsilon}(4S) resonance with the BABAR detector at the PEP-II e{sup +}e{sup -} storage ring. Using a novel technique based on the simultaneous fit of a set of variables reconstructed on the recoil of a B tagged in an hadronic decay mode, we measure the relative branching fractions {Lambda}(B{sup -} {yields} D{sup 0}{ell}{sup -}{bar {nu}}{sub {ell}}) = 0.611 {+-} 0.022 (stat.) {+-} 0.027 (syst.) and {Lambda}(B{sup -} {yields} D**{sup 0})(D{sup (*)}{pi}){ell}{sup -}{bar {nu}}{sub {ell}}/{Lambda}(B{sup -} {yields} DX{ell}{sup -}{bar {nu}}{sub {ell}}) = 0.173 {+-} 0.017 (stat.) {+-} 0.021 (syst.).
This book constitutes the proceedings of the XVIII International Symposium on Lepton-Photon Interactions. It contains 30 review papers on the latest developments by experts in the field. The subjects cover the structure of photons and hadrons, progress in QCD and diffraction, heavy quark (c, b, t) physics, electroweak precision measurements and tests, CP violation, neutrino physics, searches for new particles and phenomena, cosmology, progress in theory and physics at future colliders.