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The BaBar Silicon Vertex Tracker is a five layers, double sided AC-coupled silicon microstrip detector operating on the PEP-II storage ring at the Stanford Linear Accelerator Center. The performance of the SVT after 4 years of running is described. Results from radiation hardness tests are presented and the implications of the absorbed radiation dose on the(More)
We present a measurement of the time-dependent CP-violating (CPV) asymmetries in B0-->K(0)(S)pi(0) decays based on 124x10(6) Upsilon(4S)-->BB decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. In a sample containing 122+/-16 signal decays, we obtain the magnitudes of the direct CPV asymmetry(More)
We present measurements of the semileptonic decays B--->D0tau-nutau, B--->D*0tau-nutau, B0-->D+tau-nutau, and B0-->D*+tau-nutau, which are potentially sensitive to non-standard model amplitudes. The data sample comprises 232x10(6) Upsilon(4S)-->BB decays collected with the BABAR detector. From a combined fit to B- and B0 channels, we obtain the branching(More)
3 Abstract We present a detailed description of a search for anomalous production of missing E T (E T), jets, leptons (e, µ, τ), b-quarks, or additional photons in events containing two isolated, central (|η| < 1.0) photons with E T > 12 GeV. The results are consistent with standard model expectations, with the possible exception of one event that has in(More)
The results based on 1992 –95 data (Run 1) from the CDF and D0 experiments on the measurements of the W boson mass and width are presented, along with the combined results. We report a Tevatron collider average M W ˆ 80:456 0:059 GeV. We also report the Tevatron collider average of the directly measured W boson width ÿ W ˆ 2:115 0:105 GeV. We describe a new(More)
We report the results of a search for a W' boson produced in pp; collisions at a center-of-mass energy of 1.8 TeV using a 106 pb(-1) data sample recorded by the Collider Detector at Fermilab. We observe no significant excess of events above background for a W' boson decaying to a top and bottom quark pair. In a model where this boson would mediate(More)
We present measurements of the branching fraction and CP-violating asymmetries for neutral B decays to D(*+/-)D-/+. The measurement uses a data sample of approximately 88x10(6) Upsilon(4S)-->BBmacr; decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy e(+)-e(-) collider. By fully reconstructing the D(*+/-)D-/+ decay products, we(More)
We present preliminary results from a lepton-tagged fully-inclusive measurement of B → X s γ decays , where X s is any strange hadronic state. Results are based on a BABAR data set of 88.5 million BB pairs at the Υ (4S) resonance. We present a reconstructed photon energy spectrum in the Υ (4S) frame, and partial branching fractions above minimum(More)