0000000000139477

AUTHOR

Maryam Moteabbed

showing 3 related works from this author

High Resolution Spectroscopy ofBΛ12by Electroproduction

2007

An experiment measuring electroproduction of hypernuclei has been performed in Hall A at Jefferson Lab on a $^{12}$C target. In order to increase counting rates and provide unambiguous kaon identification two superconducting septum magnets and a Ring Imaging CHerenkov detector (RICH) were added to the Hall A standard equipment. An unprecedented energy resolution of less than 700 keV FWHM has been achieved. Thus, the observed \lam{12}{B} spectrum shows for the first time identifiable strength in the core-excited region between the ground-state {\it s}-wave $\Lambda$ peak and the 11 MeV {\it p}-wave $\Lambda$ peak.

PhysicsSuperconductivity010308 nuclear & particles physicsResolution (electron density)General Physics and AstronomyOrder (ring theory)Lambda01 natural sciencesRing-imaging Cherenkov detectorNuclear physicsFull width at half maximum0103 physical sciencesNuclear Experiment010306 general physicsSpectroscopyEnergy (signal processing)Physical Review Letters
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Precise Measurement of the Neutron Magnetic Form FactorGMnin the Few-GeV2Region

2009

The neutron elastic magnetic form factor was extracted from quasielastic electron scattering on deuterium over the range Q;{2}=1.0-4.8 GeV2 with the CLAS detector at Jefferson Lab. High precision was achieved with a ratio technique and a simultaneous in situ calibration of the neutron detection efficiency. Neutrons were detected with electromagnetic calorimeters and time-of-flight scintillators at two beam energies. The dipole parametrization gives a good description of the data.

Physics010308 nuclear & particles physicsScatteringNuclear TheoryGeneral Physics and AstronomyScintillator7. Clean energy01 natural sciencesNuclear physicsDipoleDeuterium0103 physical sciencesMagnetic form factorNeutron detectionHigh Energy Physics::ExperimentNeutronNuclear Experiment010306 general physicsElectron scatteringPhysical Review Letters
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Spectroscopy ofLiΛ9by electroproduction

2015

Background: In the absence of accurate data on the free two-body hyperon-nucleon interaction, the spectra of hypernuclei provides information on the details of the effective hyperon-nucleon interaction.Purpose: To obtain a high-resolution binding-energy spectrum for the ${}^{9}\mathrm{Be}(e,{e}^{\ensuremath{'}}{K}^{+})_{\ensuremath{\Lambda}}^{9}\mathrm{Li}$ reaction.Method: Electroproduction of the hypernucleus $_{\ensuremath{\Lambda}}^{9}\mathrm{Li}$ has been studied for the first time with sub-MeV energy resolution in Hall A at Jefferson Lab on a $^{9}\mathrm{Be}$ target. In order to increase the counting rate and to provide unambiguous kaon identification, two superconducting septum magn…

SuperconductivityPhysicsNuclear and High Energy PhysicsNuclear TheoryOrder (ring theory)Atomic physicsNuclear ExperimentGround stateHypernucleusSpectroscopyLambdaEnergy (signal processing)Spectral linePhysical Review C
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