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Title: First measurements of the {rho}{sup 3} spin density matrix elements in {gamma}p --> p {omega} using CLAS at JLAB

In an effort towards a ''complete'' experiment for the ω meson, we present studies from an experiment with an unpolarized target and a circularly polarized photon beam (g1c), carried out using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. The experiment was analyzed using an extended maximum likelihood fit with partial wave amplitudes. New likelihood functions were calculated to account for the polarization of the photon beam. Both circular and linear polarizations are explored. The results of these fits are then used to project out the spin density matrix for the {omega}. First measurements of the {rho}{sup 3} spin density matrix elements will be presented using this method.
  1. Carnegie Mellon University, Pittsburgh, PA (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-PHY--13-1805; DOE/OR--23177-2981
Journal ID: ISSN 2010-1945; TRN: US1400162
DOE Contract Number:
Resource Type:
Resource Relation:
Journal Name: International Journal of Modern Physics: Conference Series; Journal Volume: 26; Conference: NSTAR 2013, Peniscola (Spain), 27-30 May 2013
World Scientific
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC) (United States)
Country of Publication:
United States
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Omega; spin density matrix; Jefferson Lab; CLAS