Helicity Asymmetry in gamma p -> pi+ n with FROST

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The main objective of the FROST experiment at Jefferson Lab is the study of baryon resonances. The polarization observable E for the reaction gamma p to pi+n has been measured as part of this program. A circularly polarized tagged photon beam with energies from 0.35 to 2.35 GeV was incident on a longitudinally polarized frozen-spin butanol target. The final-state pions were detected with the CEBAF Large Acceptance Spectrometer. Preliminary polarization data agree fairly well with present SAID and MAID partial-wave analyses at low photon energies. In most of the covered energy range, however, significant deviations are observed. These discrepancies underline ... continued below

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283-286

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Strauch, Steffen April 1, 2012.

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The main objective of the FROST experiment at Jefferson Lab is the study of baryon resonances. The polarization observable E for the reaction gamma p to pi+n has been measured as part of this program. A circularly polarized tagged photon beam with energies from 0.35 to 2.35 GeV was incident on a longitudinally polarized frozen-spin butanol target. The final-state pions were detected with the CEBAF Large Acceptance Spectrometer. Preliminary polarization data agree fairly well with present SAID and MAID partial-wave analyses at low photon energies. In most of the covered energy range, however, significant deviations are observed. These discrepancies underline the crucial importance of polarization observables to further constrain these analyses.

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283-286

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  • Journal Name: AIP Conf. Proc.; Journal Volume: 1432; Conference: NSTAR 11, 17-20 May 2011, Newport News, VA

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  • Report No.: JLAB-PHY-11-1358
  • Report No.: DOE/OR/23177-1731
  • Report No.: arXiv:1108.3050
  • Grant Number: AC05-06OR23177
  • DOI: 10.1063/1.3701231 | External Link
  • Office of Scientific & Technical Information Report Number: 1038729
  • Archival Resource Key: ark:/67531/metadc845550

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • April 1, 2012

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Aug. 3, 2016, 3:49 p.m.

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Strauch, Steffen. Helicity Asymmetry in gamma p -> pi+ n with FROST, article, April 1, 2012; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc845550/: accessed July 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.