Baryon spectroscopy with polarization observables from CLAS

Conference · Tue Nov 01 00:00:00 EDT 2016 · Few Body Syst.

DOI:https://doi.org/10.1007/s00601-016-1125-x· OSTI ID:1332079

Strauch, Steffen ^[1]

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1. Univ. of South Carolina, Columbia, SC (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

The spectrum of nucleon excitations is dominated by broad and overlapping resonances. Polarization observables in photoproduction reactions are key in the study of these excitations. They give indispensable constraints to partial-wave analyses and help clarify the spectrum. A series of polarized photoproduction experiments have been performed at the Thomas Jefferson National Accelerator Facility with the CEBAF Large Acceptance Spectrometer (CLAS). These measurements include data with linearly and circularly polarized tagged-photon beams, longitudinally and transversely polarized proton and deuterium targets, and recoil polarizations through the observation of the weak decay of hyperons. An overview of these studies and recent results will be given.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1332079
• Report Number(s): JLAB-PHY-16-2201; DOE/OR/23177-3850; arXiv:1602.07284; NSF PHY-1505615
• Journal Information: Few Body Syst., Vol. 57, Issue 10; Conference: ECT* Workshop on Nucleon Resonances : From Photoproduction to High Photon Virtualities, 12-16 Oct 2015. Trento, Italy
• Country of Publication: United States
• Language: English