Análise do metabolismo de polifosfato e do operon pst em Pseudomonas aeruginosa.

Munévar, Nicolás Federico Villamil

doi:10.11606/d.42.2015.tde-10122015-101302

Cited by 2 publications

(2 citation statements)

References 122 publications

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“…Subsequent experiments have used a linearly-polarized photon beam to measure the beam asymmetries Σ [8]. Recently, CLAS has accumulated data for reactions off the neutron using an unpolarized deuterium target and circularly-as well as linearly-polarized photons [9].…”

Section: The Clas Polarization Programmentioning

confidence: 99%

The CLAS Excited Baryon Program at JLab

Credé¹

2007

AIP Conference Proceedings

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Nucleons are complex systems of confined quarks and exhibit characteristic spectra of excited states. Highly excited nucleon states are sensitive to details of quark confinement which is poorly understood within Quantum Chromodynamics (QCD), the fundamental theory of strong interactions. Thus, measurements of excited states and the corresponding determination of their properties are needed to come to a better understanding of how confinement works in nucleons. However, the excited states of the nucleon cannot simply be inferred from cleanly separated spectral lines. Quite the contrary, a spectral analysis in nucleon resonance physics is challenging because of the fact that the resonances are broadly overlapping states which decay into a multitude of final states involving mesons and baryons. To provide a consistent and complete picture of an individual nucleon resonance, the various possible production and decay channels must be treated in a multichannel framework that permits separating resonance from background contributions. Very often, resonances reveal themselves more clearly through interference with dominant amplitudes. These interference terms can be isolated via polarization observables. The current CLAS effort is to utilize highly-polarized hydrogen and deuterium targets as well as polarized photon beams toward a complete measurement of a large number of reaction channels.

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Section: The Clas Polarization Programmentioning

confidence: 99%

The CLAS Excited Baryon Program at JLab

Credé¹

2007

AIP Conference Proceedings

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“…Hyperon production off deuterium with linearly-polarized photons forms the focus of the gl3 experiment and is described in detail in Refs. [28,29]. Preliminary results from yp -^ ^A from the g8a run [30] indicate that polarized observables serve to delineate the relative contributions from the various baryon resonances.…”

Section: Jn^kkmentioning

confidence: 99%

The Need for Polarization for Extracting Baryon Resonances and the NSTAR Program at CLAS

Cole¹

2007

AIP Conference Proceedings

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We report on the NSTAR program in Hall B of JLab on using polarization observables to extract parameters of baryon resonances. The scientific purpose of the program is to improve the understanding of the underlying quark degrees of freedom, especially in the higher resonance regions, where we expect to uncover many of missing baryon resonances that mainly decay through multi-meson channels. With the high-quality beam of circularly-and linearly-polarized photons onto unpolarized and polarized proton and deteurium targets, and coupled with the nearly complete solid angle coverage of CLAS, we will extract the differential cross sections and associated polarization observables obtained by the photoproduction of vector mesons and kaons at center of mass energies of 1.7 to 2.2 GeV. The paper will primarily present the photon beam aspects of the excited baryon program.

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Análise do metabolismo de polifosfato e do operon pst em Pseudomonas aeruginosa.

Cited by 2 publications

References 122 publications

The CLAS Excited Baryon Program at JLab

The CLAS Excited Baryon Program at JLab

The Need for Polarization for Extracting Baryon Resonances and the NSTAR Program at CLAS

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