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High-statistics differential cross sections and spin-density matrix elements for the reaction γp→pω have been measured using the CEBAF large acceptance spectrometer (CLAS) at Jefferson Lab for center-of-mass (c.m.) energies from threshold up to 2.84 GeV. Results are reported in 112 10-MeV wide c.m. energy bins, each subdivided into cosθωc.m. bins of width 0.1. These are the most precise and extensive ω photoproduction measurements to date. A number of prominent structures are clearly present in the data. Many of these have not previously been observed due to limited statistics in earlier measurements.


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Physical Review C

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M. Williams et al. [CLAS Collaboration], "Differential cross sections and spin density matrix elements for the reaction γp→pω," Physical Review C 80.6 (2009) DOI: 10.1103/PhysRevC.80.065208



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