E. M. Aitala

University of Mississippi

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D. Ashery

Tel Aviv University

J. C. Anjos

Centro Brasileiro de Pesquisas Físicas

I. Bediaga

Centro Brasileiro de Pesquisas Físicas

J. Wiener

Princeton University

A.K.S. Santha

University of Cincinnati

A. J. Schwartz

University of Cincinnati

K.C. Peng

Illinois Institute of Technology

R. H. Milburn

University of Kentucky

G. Blaylock

University of Massachusetts Amherst

A. De Roeck

Universidade Federal do Rio de Janeiro

Cooperative Institutions

Fermi National Accelerator Laboratory

Centro Brasileiro de Pesquisas Físicas

University of Mississippi

European Organization for Nuclear Research

University of Cincinnati

Kansas State University

Institute of High Energy Physics

Laboratoire d’Annecy de Physique des Particules

Tel Aviv University

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)

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)

Asymmetries in the production of lambda zero, cascade minus, and omega minus hyperons in 500 GeV/c pi minus-Nucleon Interactions

arXiv (Cornell University) (2000)

E. M. Aitala

Using data from Fermilab fixed-target experiment E791, we have measured particle-antiparticle production asymmetries for lambda zero, cascade minus, and omega minus hyperons in pi minus-nucleon interactions at 500 GeV/c. The asymmetries are measured as functions of Feynman-x (x_F) and pt^2 over the ranges of -0.12 GE x_F LE 0.12 and 0 GE pt^2 LE 4 (GeV/c)^2. We find substantial asymmetries, even at x_F = 0. We also observe leading-particle- type asymmetries which qualitatively agree with theoretical predictions.

Zero (linguistics)

Fermilab

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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)

Measurement of the branching ratio

Physics Letters B (1997)

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

We report a measurement of the branching ratio B(D+ → ϱ0ℓ+νℓ)B(D+ → K∗0ℓ+νℓ) from the Fermilab charm hadroproduction experiment E791. Based on signals of 49 ± 17 events in the D+ → ϱ0e+νe mode and 54 ± 18 events in the D+ → ϱ0μ+νμ mode, we measure. B(D+ → ϱ0e+νe)B(D+ → e+νe) = 0.014 ± 0.014 ± 0.009,B(D+ → ϱ0μ+νμ)B(D+ → μ+νμ) = 0.051 ± 0.015 ± 0.009. Combining the results from both the electronic and muonic modes, we obtain B(D+ → ϱ0ℓ+νℓ)B(D+ → ℓ+νℓ) = 0.047 ± 0.013. This result is compared to theoretical predictions.

Branching fraction

Fermilab

Charm (quantum number)

10.1016/s0370-2693(97)00194-9

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Citations (28)

Search forD0D¯0Mixing in Semileptonic Decay Modes

Physical Review Letters (1996)

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

We report the result of a search for D0 - D0_bar mixing in the data from hadroproduction experiment E791 at Fermilab. We use the D* tag and semileptonic decay vertices of D0 to look for wrong-sign decays with mixing time dependence.

10.1103/physrevlett.77.2384

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Citations (51)

Planned Searches for the Light Gluino

APS (1996)

E. M. Aitala

Gluino

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A search for the rare and forbidden decays neutral D mesons decaying to V + leptons

PhDT (2003)

E. M. Aitala

Source

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