Search Results - "Cahn, R N"
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Detective quantum efficiency dependence on x-ray energy weighting in mammography
Published in Medical physics (Lancaster) (01-12-1999)“…An evaluation of the dependence of detective quantum efficiency (DQE) on the incident energy spectrum has been made for mammography. The DQE dependence on the…”
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Focusing hard X-rays with old LPs
Published in Nature (London) (27-04-2000)“…We have found that two sections cut from a vinyl long-playing record can form a spherical aberration-free refractive lens for hard X-rays. Our manufactured…”
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Cross-section formulae for specific processes
Published in The European physical journal. C, Particles and fields (01-03-2000)Get full text
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Plasma Wave Accelerators
Published in Science (American Association for the Advancement of Science) (16-04-1993)Get full text
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Scalar bound state in nonminimal technicolor : a surrogate Higgs boson
Published in Physical review letters (08-07-1991)“…Models with many technifermion doublets have enhanced interactions. The one-family technicolor model, which has four doublets, may well have a scalar bound…”
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Measurement of B → K γ Branching Fractions and Charge Asymmetries
Published in Physical review letters (11-03-2002)“…The branching fractions of the exclusive decays $B^0\to K^{*0}\gamma$ and $B^+ \to K^{*+}\gamma$ are measured from a sample of $(22.74\pm 0.36)\times 10^6$…”
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Measurement of time-dependent CP asymmetries in $B^0 \to D^{\pm} \pi^{\mp}$ decays and constraints on $sin(2\beta+\gamma)
Published in Physical review letters (25-06-2004)“…We present a measurement of time-dependent CP-violating asymmetries in fully reconstructed $B^0->D^{(*)\pm}\pi^\mp$ decays in a data sample of approximately 88…”
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Measurement of time-dependent CP asymmetries and constraints on $sin(2\beta+\gamma)$ with partial reconstruction of $B^0 \to D^{\mp} \pi^{\pm}$ decays
Published in Physical review letters (25-06-2004)“…We present a measurement of time-dependent CP-violating asymmetries in decays of neutral B mesons to the final states D*-+ pi+-, using approximately 82 million…”
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Observation of the Bottomonium Ground State in the Decay Υ(3S)→γηb
Published in Physical review letters (11-08-2008)“…We report the results of a search for the bottomonium ground state η b ( 1 S ) in the photon energy spectrum with a sample of ( 109 ± 1 ) million of Υ ( 3 S )…”
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Measurements of branching fractions and CP-violating asymmetries in B meson decays to charmless two-body states containing a $K^0
Published in Physical review letters (21-05-2004)“…We present measurements of branching fractions and \CP-violating asymmetries in decays of $B$ mesons to two-body final states containing a \Kz. The results are…”
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Measurement of the B 0 and B + Meson Lifetimes with Fully Reconstructed Hadronic Final States
Published in Physical review letters (12-11-2001)“…The B0 and B+ meson lifetimes have been measured in e+e- annihilation data collected in 1999 and 2000 with the BABAR detector at center-of-mass energies near…”
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Search for B + → X ( 3872 ) K + , X ( 3872 ) → J / ψ γ
Published in Physical review. D, Particles, fields, gravitation, and cosmology (01-10-2006)Get full text
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Comment on effects of relative energy contributions in a two-interaction transition
Published in Physical review letters (25-03-1985)Get full text
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Observation of Y(3940)→J/ψω in B→J/ψωK at BABAR
Published in Physical review letters (22-08-2008)“…We present a study of the decays B 0 , + → J / ψ ω K 0 , + using 383 × 10 6 B ¯¯¯ B events obtained with the BABAR detector at PEP-II. We observe Y ( 3940 ) →…”
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Search for doubly charmed baryons Ξ+cc and Ξ++cc in BABAR
Published in Physical review. D, Particles, fields, gravitation, and cosmology (2006)“…We search for the production of doubly charmed baryons in e + e − annihilations at or near a center-of-mass energy of 10.58 GeV, in a data sample with an…”
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Exclusive Branching-Fraction Measurements of Semileptonic τ Decays into Three Charged Hadrons, into φπ−ντ, and into φK−ντ
Published in Physical review letters (08-01-2008)“…Using a data sample corresponding to an integrated luminosity of 342 fb − 1 collected with the BABAR detector at the SLAC PEP-II electron-positron storage…”
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Observation of the Semileptonic Decays B → D τ − ν ¯ τ and Evidence for B → D τ − ν ¯ τ
Published in Physical review letters (15-01-2008)Get full text
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Solvable Examples of Drift and Diffusion of Ions in Non-uniform Electric Fields
Published 03-09-2008“…2008_JINST_3_P07008 The drift and diffusion of a cloud of ions in a fluid are distorted by an inhomogeneous electric field. If the electric field carries the…”
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Distance probes of dark energy
Published in Astroparticle physics (15-03-2015)“…This document presents the results from the Distances subgroup of the Cosmic Frontier Community Planning Study (Snowmass 2013). We summarize the current state…”
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