2009/08/31 by M. Williams, Douglas Applegate, D. Applegate +98 · 43 citations
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Amplitude #Omega #Partial wave analysis #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #nucl-ex
paper · pdf · doi:10.1103/physrevc.80.065209
published in Physical Review C 80(6) (American Institute of Physics)
arxiv created 2009/12/08 · openalex publication_date 2009/12/30 · openalex created_date 2016/06/24 · arxiv updated 2019/08/13 · openalex updated_date 2026/08/05
An event-based partial wave analysis (PWA) of the reaction \ensuremathγp\ensuremath→p\ensuremathω has been performed on a high-statistics dataset obtained using the CLAS at Jefferson Lab for center-of-mass energies from threshold up to 2.4 GeV. This analysis benefits from access to the world's first high-precision spin-density matrix element measurements, available to the event-based PWA through the decay distribution of \ensuremathω\ensuremath→\ensuremathπ+\ensuremathπ^\ensuremath-\ensuremathπ0. The data confirm the dominance of the t-channel \ensuremathπ0 exchange amplitude in the forward direction. The dominant resonance contributions are consistent with the previously identified states F15(1680) and D13(1700) near threshold, as well as the G17(2190) at higher energies. Suggestive evidence for the presence of a JP=5/2+ state around 2 GeV, a ``missing'' state, has also been found. Evidence for other states is inconclusive.