G. F. Fox

University of South Carolina

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R. Weiss-Babai

Soreq Nuclear Research Center

J. Wiener

Princeton University

L. P. Perera

Fermi National Accelerator Laboratory

K. O’Shaughnessy

University of California, Santa Cruz

D. Ashery

Tel Aviv University

G. Herrera

Center for Research and Advanced Studies of the National Polytechnic Institute

S. MayTal-Beck

Tel Aviv University

K.C. Peng

Illinois Institute of Technology

R. H. Milburn

University of Kentucky

A. De Roeck

Universidade Federal do Rio de Janeiro

Cooperative Institutions

Fermi National Accelerator Laboratory

University of Mississippi

Centro Brasileiro de Pesquisas Físicas

University of Cincinnati

European Organization for Nuclear Research

Kansas State University

Institute of High Energy Physics

Laboratoire d’Annecy de Physique des Particules

University of South Carolina

Campbell Collaboration

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Study of the decay D0→K−K+π−π+

Physics Letters B (1998)

E. M. Aitala S. Amato J. C. Anjos J. A. Appel D. Ashery

Using data from Fermilab fixed-target experiment E791, we measure the branching ratio for D0→K−K+π−π+ and its resonant components. We find Γ(D0→K−K+π−π+)Γ(D0→K−π+π−π+)=(3.13±0.37±0.36)%. A coherent amplitude analysis is used to estimate the resonant components. We measure the ratios Γ(D0→f)Γ(D0→K−π+π−π+) to be (2.0±0.9±0.8)% for f=φρ0, (0.9±0.4±0.5)% for f=φπ+π−, <2.0% at the 90% CL for f=K∗0(892)K∗0(892), and <1.0% at the 90% CL for f=K∗0(892)K+π− or K∗0(892)K−π+.

Fermilab

Branching fraction

10.1016/s0370-2693(98)00066-5

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Citations (6)

Software development around a millisecond

Computing in Science & Engineering (2004)

G. F. Fox

The author considers software development methodologies, emphasizing those relevant to large-scale scientific computing. Many projects aim to improve the scientific computing environment, including scientific code preparation, execution, and debugging. But a scientific programming environment must address some of the key features that differentiate it from commodity or business computing for which many good tools exist. These special features include: floating-point arithmetic; performance and support for scalable parallel implementations; specific scientific data structures and utilities (such as mesh generation); and integrating simulations with distributed data. This last area is focused upon, discussing technologies needed for software integration, which is part of the overall struggle to develop self-contained modules that link together to create larger applications. Subroutines, methods, libraries, objects, components, distributed objects, and services are different ways of packaging software for greater reusability. We look at the service model for software modules.

Reusability

Implementation

Software framework

10.1109/mcise.2004.1267616

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Citations (5)

Correlations between D and $${\overline D}$$ mesons produced in 500 GeV/cπ−-nucleon interactions

EPJ direct (2000)

E. M. Aitala S. Amato J. C. Anjos J. A. Appel D. Ashery

Event generator

Charm (quantum number)

Fermilab

D meson

Bar (unit)

10.1007/s101059900c0004

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Citations (2)

Multidimensional resonance analysis of Λc+→pK−π+

Physics Letters B (2000)

E. M. Aitala S. Amato J. C. Anjos J. A. Appel D. Ashery

10.1016/s0370-2693(99)01397-0

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Citations (22)

Search for rare and forbidden dilepton decays of the D+, Ds+, and D0 charmed mesons

Physics Letters B (1999)

E. M. Aitala S. Amato J. C. Anjos J. A. Appel D. Ashery

Fermilab

Antiparticle

Branching fraction

Charm (quantum number)

Electron–positron annihilation

B meson

10.1016/s0370-2693(99)00902-8

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Citations (39)

Measurement of the form-factor ratios for D→ℓν

Physics Letters B (1998)

E. M. Aitala S. Amato J. C. Anjos J. A. Appel D. Ashery

The form factor ratios rV=V(0)/A1(0), r2=A2(0)/A1(0) and r3=A3(0)/A1(0) in the decay D+→K★0ℓ+νℓ, K★0→K−π+ have been measured using data from charm hadroproduction experiment E791 at Fermilab. From 3034 (595) signal (background) events in the muon channel, we obtain rV=1.84±0.11±0.09, r2=0.75±0.08±0.09 and, as a first measurement of r3, we find 0.04±0.33±0.29. The values of the form factor ratios rV and r2 measured for the muon channel are combined with the values of rV and r2 that we have measured in the electron channel. The combined E791 results for the muon and electron channels are rV=1.87±0.08±0.07 and r2=0.73±0.06±0.08.

Charm (quantum number)

Fermilab

Form factor (electronics)

10.1016/s0370-2693(98)01243-x

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Citations (21)

Asymmetries in the production of Λ0, Ξ−, and hyperons in 500 GeV/c π−–nucleon interactions

Physics Letters B (2000)

E. M. Aitala S. Amato J. C. Anjos J. A. Appel D. Ashery

Fermilab

Particle (ecology)

10.1016/s0370-2693(00)01278-8

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Citations (19)

Study of theDs+→π−π

Physical Review Letters (2001)

E. M. Aitala S. Amato J. C. Anjos J. A. Appel D. Ashery

From a sample of 848+/-44 D(+)(s)-->pi(-)pi(+)pi(+) decays, we find gamma(D(+)(s)-->pi(-)pi(+)pi(+))/gamma(D(+)(s)-->straight phipi(+)) = 0.245+/-0.028(+0.019)(-0.012). Using a Dalitz plot analysis of this three body decay, we find significant contributions from the channels rho(0)(770)pi(+), rho(0)(1450)pi(+), f(0)(980)pi(+), f(2)(1270)pi(+), and f(0)(1370)pi(+). We also present the values obtained for masses and widths of the resonances f(0)(980) and f(0)(1370).

Dalitz plot

10.1103/physrevlett.86.765

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Citations (148)

Study of the decayD0→K−K−

Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields (2001)

E. M. Aitala S. Amato J. C. Anjos J. A. Appel D. Ashery

Using data from the E791 fixed-target hadroproduction experiment at Fermilab we have studied the Cabibbo-favored but phase-space suppressed decay, $D^0 \to K^- K^- K^+ \pi^+$. We find the decay rate for this mode to be $(0.54 \pm 0.16 \pm 0.08) \times 10^{-2}$ times that for the normalization mode $D^0 \to K^- \pi^- \pi^+ \pi^+$. We observe a clear signal for $D^0 \to \phi K^- \pi^+$ which is consistent with producing $0.7 \pm 0.3$ of the $D^0 \to K^- K^- K^+ \pi^+$ signal. In the context of simple models, we use our measurements to estimate the importance of decay amplitudes that produce extra quark-antiquark pairs from the vacuum relative to those that do not.

Normalization

10.1103/physrevd.64.112003

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Citations (1)

A proposal to study high p(t) physics with a multiparticle spectrometer

G. F. Fox E. Lorenz D. Dzierba A. Wehmann S. Bernstein

Source

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Citations (0)