Duncan J Judd

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We present a search for the decay B + → τ + ν τ in 88.9 × 10 6 Υ (4S) decays recorded with the BABAR detector at the SLAC B-Factory. A sample of semi-exclusive, semi-leptonic B decays (B − → D 0 ℓ − ¯ ν ℓ X), where X is either a photon, π 0 , or nothing, is used to identify the daughter particles that are associated with the other B meson in each event.(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 preliminary results of a search for several exclusive c harmless hadronic B decays from electron-positron annihilation data collected by the BABAR detector near the 4S resonance. These include three-body decay modes with nal states h h h and h h 0 , and quasi-two-body decay modes with nal states X 0 h and X 0 K 0 S , where h = or K and X 0 = 0 or(More)
The distinctive cortical uptake of the tracer (18)F-FDDNP (2-(1-{6-[(2-fluoroethyl(methyl)amino]-2-naphthyl}ethylidene)malononitrile) in Alzheimer's disease (AD) is believed to be because of its binding to both neurofibrillary tangles (NFTs) and highly fibrillar senile plaques. We therefore investigated the binding of a tracer concentration of (3)H-FDDNP to(More)
We present an updated measurement of time-dependent CP-violating asymmetries in neutral B decays with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. This result uses an additional sample of Upsilon(4S) decays collected in 2001, bringing the data available to 32 x 10(6) BB macro pairs. We select events in which one neutral B meson is fully(More)
This paper addresses the problem of collective data distribution, speciically multicast, in wormhole-routed hypercubes. The system model allows a processor to send and receive data in all dimensions simultaneously. New theoretical results that characterize contention among messages in wormhole-routed hypercubes are developed and used to design new multicast(More)
OBJECTIVE The aim of this study is to elicit practitioners' views and experiences of the challenges to forming a therapeutic alliance with brain injury survivors, with a view to informing current psychotherapeutic practice. METHODS The present research utilised the data-display method, a qualitative technique, to examine the questionnaire responses of 21(More)
The BABAR detector, situated at the SLAC PEP-II asymmetric e + e ; collider, has been recording data at energies on and around the (4S) resonance since May 1999. In this paper, we brieey describe the PEP-II B Factory and the BABAR detector. The performance presently achieved by the experiment in the areas of tracking, vertexing, calorimetry and particle(More)
We present the results of a search for the decay B0-->tau+tau- in a data sample of (232+/-3)x10(6) Upsilon(4S)-->BB decays using the BABAR detector. Certain extensions of the standard model predict measurable levels of this otherwise rare decay. We reconstruct fully one neutral B meson and seek evidence for the signal decay in the rest of the event. We find(More)