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

Conference · Wed Jan 01 00:00:00 EST 2014 · International Journal of Modern Physics: Conference Series

DOI:https://doi.org/10.1142/S2010194514600635· OSTI ID:1116350

Vernarsky, Brian J. ^[1]

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1. Carnegie Mellon University, Pittsburgh, PA (United States)

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.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1116350
• Report Number(s): JLAB-PHY-13-1805; DOE/OR-23177-2981; TRN: US1400162
• Journal Information: International Journal of Modern Physics: Conference Series, Vol. 26; Conference: NSTAR 2013, Peniscola (Spain), 27-30 May 2013; ISSN 2010-1945
• Publisher: World Scientific
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Omega
spin density matrix
Jefferson Lab
CLAS