Eta Photoproduction on the proton revisited: Evidence for a narrow N(1685) resonance

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dc.creatorKuznetsov, V.
dc.creatorPolyakov, M. V.
dc.creatorBoiko, T.
dc.creatorJang, J.
dc.creatorKim, A.
dc.creatorKim, W.
dc.creatorNi, A.
dc.date2007-03-02
dc.date2007-03-21
dc.date.accessioned2026-07-07T07:52:47Z
dc.date.available2026-07-07T07:52:47Z
dc.descriptionRevised analysis of $Σ$ beam asymmetry for $η$ photoproduction on the free proton reveals a resonant structure at $W\sim 1.69$ GeV. Comparison of experimental data with multipole decomposition based on the E429 solution of the SAID partial wave analysis and including narrow states, suggests a narrow ($Γ\leq 15$ MeV) resonance. Possible candidates are $P_{11}$, $P_{13}$, or $D_{13}$ resonances. The result is considered in conjunction with the recent evidence for a bump-like structure at $W\sim 1.67 - 1.68$ GeV in quasi-free $η$ photoproduction on the neutron.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/hep-ex/0703003
dc.identifierhttp://arxiv.org/abs/hep-ex/0703003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/126009
dc.subjectHigh Energy Physics - Experiment
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Experiment
dc.titleEta Photoproduction on the proton revisited: Evidence for a narrow N(1685) resonance
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