The double spin asymmetry in exclusive π+ electroproduction with CLAS

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Abstract

The eglb run at Jefferson Lab used the CLAS detector in Hall B along with a 1.6 GeV - 5.6 GeV polarized electron beam and polarized nuclear targets (composed of NH3 and ND3) to measure single and double spin asymmetries. This analysis is of the double and single spin asymmetries in the exclusive electro-production of positive pions (ep → eπ+n). The asymmetries were measured as a function of W, Q2, cos θ, and φ. The value of these asymmetries can be used to help determine the spin structure of the resonances in the baryon resonance region. Preliminary results for the asymmetries are shown.

Original languageEnglish
Title of host publicationSpin Physics
Subtitle of host publication18th International Spin Physics Symposium
EditorsXiaochao Zheng, Yelena Prok, Matt Poelker, Donald G. Crabb, Simonetta Liuti, Donal B. Day
PublisherAmerican Institute of Physics Inc.
Pages369-372
Number of pages4
ISBN (Print)9780735406865
DOIs
StatePublished - Aug 4 2009
Event18th International Spin Physics Symposium 2008 - Charlottesville, United States
Duration: Oct 6 2008Oct 11 2008

Publication series

NameAIP Conference Proceedings
Volume1149
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference18th International Spin Physics Symposium 2008
Country/TerritoryUnited States
CityCharlottesville
Period10/6/0810/11/08

Keywords

  • Asymmetries
  • Resonances

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