Measurement of the Polarised Photon Asymmetry Parameter in the Reaction [gamma][rho] [arrow] [pi][degrees][rho] Over the Energy Range 1.72 - 2.76 GeV ....

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Book Synopsis Measurement of the Polarised Photon Asymmetry Parameter in the Reaction [gamma][rho] [arrow] [pi][degrees][rho] Over the Energy Range 1.72 - 2.76 GeV .... by : Michael Charles Thorne

Download or read book Measurement of the Polarised Photon Asymmetry Parameter in the Reaction [gamma][rho] [arrow] [pi][degrees][rho] Over the Energy Range 1.72 - 2.76 GeV .... written by Michael Charles Thorne and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Measurement of the Polarization Observables Is and Ic for [gamma][rho] -] [rho] [pi]+[pi]- Using the CLAS Spectrometer

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Total Pages : 146 pages
Book Rating : 4.:/5 (758 download)

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Book Synopsis Measurement of the Polarization Observables Is and Ic for [gamma][rho] -] [rho] [pi]+[pi]- Using the CLAS Spectrometer by : Charles Hanretty

Download or read book Measurement of the Polarization Observables Is and Ic for [gamma][rho] -] [rho] [pi]+[pi]- Using the CLAS Spectrometer written by Charles Hanretty and published by . This book was released on 2011 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Presented in this work are the first ever measurements of the polarization observable Is for a final state with two pions and the first ever measurements of Ic for a final state containing charged pions (let alone the first measurements of both observables for the specialized case of [gamma][rho] -> [rho] [pi]+[pi]- reactions). The presented measurements were made using the high-statistics data available in the CLAS g8b data set. This data were taken at the Thomas Jefferson National Accelerator Facility (JLab) from July 20th to September 1st of 2005 using linearly polarized photons, an unpolarized liquid hydrogen (LH2 target), and the CEBAF Large Acceptance Spectrometer (CLAS). The highly-polarized photons were produced via bremsstrahlung using an unpolarized electron beam provided by the Continuous Electron Beam Accelerator Facility (CEBAF) accelerator and a well-oriented diamond radiator. These polarized photons were produced at five different coherent edge energies: 1.3 GeV, 1.5 GeV, 1.7 GeV, 1.9 GeV, and 2.1 GeV. Considering the 200 MeV-wide window of highly polarized photons whose upper limit is the coherent edge energy, and the five different coherent edge energies used, highly polarized photons were produced covering an total energy range of 1 GeV. These data along with the utilized analysis tools have lead to clean, continuous, low-error measurements of Is and Ic which will aide the hadronic physics community in its search for the complete description of one of the most fundamental systems in nature, the baryon.

First Measurement of the Polarization Observable E in the $\vec P(\vec Gamma, Pi^+)n$ Reaction Up to 2.25 GeV.

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Total Pages : 53 pages
Book Rating : 4.:/5 (925 download)

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Book Synopsis First Measurement of the Polarization Observable E in the $\vec P(\vec Gamma, Pi^+)n$ Reaction Up to 2.25 GeV. by :

Download or read book First Measurement of the Polarization Observable E in the $\vec P(\vec Gamma, Pi^+)n$ Reaction Up to 2.25 GeV. written by and published by . This book was released on 2015 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: First results from the longitudinally polarized frozen-spin target (FROST) program are reported. The double-polarization observable E, for the reaction y2!2![pi]+n, has been measured using a circularly polarized tagged-photon beam, with energies from 0.35 to 2.37 GeV. The final-state pions were detected with the CEBAF Large Acceptance Spectrometer in Hall B at the Thomas Jefferson National Accelerator Facility. These polarization data agree fairly well with previous partial-wave analyses at low photon energies. Over much of the covered energy range, however, significant deviations are observed, particularly in the high-energy region where high-L multipoles contribute. The data have been included in new multipole analyses resulting in updated nucleon resonance parameters. Lastly, we report updated fits from the Bonn-Gatchina, Jülich-Bonn, and SAID groups.

A Measurement of the Polarization Parameter for the Reaction [pi Symbol]− [rho Symbol] [right Arrow] [pi Symbol]0 N Between 1.03 and 1.79 GeV/c

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Total Pages : 186 pages
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Book Synopsis A Measurement of the Polarization Parameter for the Reaction [pi Symbol]− [rho Symbol] [right Arrow] [pi Symbol]0 N Between 1.03 and 1.79 GeV/c by : Stephen Randall Shannon

Download or read book A Measurement of the Polarization Parameter for the Reaction [pi Symbol]− [rho Symbol] [right Arrow] [pi Symbol]0 N Between 1.03 and 1.79 GeV/c written by Stephen Randall Shannon and published by . This book was released on 1974 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: