Eta photoproduction in a combined analysis of pion- and photon-induced reactions

Ronchen, D.; Doring, M.; Haberzettl, H.; Haidenbauer, J.; MeiBner, U. -G.; Nakayama, K.

doi:10.1140/epja/i2015-15070-7

Title: Eta photoproduction in a combined analysis of pion- and photon-induced reactions

Journal Article · Thu Jun 25 00:00:00 EDT 2015 · European Physical Journal. A

DOI:https://doi.org/10.1140/epja/i2015-15070-7· OSTI ID:1303859

Ronchen, D. ^[1]; Doring, M. ^[2]; Haberzettl, H. ^[2]; Haidenbauer, J. ^[3]; MeiBner, U. -G. ^[4]; Nakayama, K. ^[5]

Univ. Bonn, Bonn (Germany)
The George Washington Univ., Washington, D.C. (United States)
Forschungszentrum Julich, Julich (Germany)
Univ. Bonn, Bonn (Germany); Forschungszentrum Julich, Julich (Germany)
Forschungszentrum Julich, Julich (Germany); Univ. of Georgia, Athens, GA (United States)

The $$\eta N$$ final state is isospin-selective and thus provides access to the spectrum of excited nucleons without being affected by excited $$\Delta$$ states. To this end, the world database on eta photoproduction off the proton up to a center-of-mass energy of $$E\sim 2.3$$ GeV is analyzed, including data on differential cross sections, and single and double polarization observables. The resonance spectrum and its properties are determined in a combined analysis of eta and pion photoproduction off the proton together with the reactions $$\pi N\to \pi N$$, $$\eta N$$, $$K\Lambda$$ and $$K\Sigma$$. For the analysis, the so-called J\"ulich coupled-channel framework is used, incorporating unitarity, analyticity, and effective three-body channels. Parameters tied to photoproduction and hadronic interactions are varied simultaneously. Furthermore, the influence of recent MAMI $$T$$ and $$F$$ asymmetry data on the eta photoproduction amplitude is discussed in detail.

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Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-06OR23177

OSTI ID:: 1303859

Report Number(s):: JLAB-THY-16-2323; DOE/OR/23177-3902; arXiv:1504.01643; PII: 252; PHY 1415459

Journal Information:: European Physical Journal. A, Vol. 51, Issue 6; ISSN 1434-6001

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 66 works

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Further evidence for <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>N</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>1900</mml:mn><mml:mo stretchy="false">)</mml:mo><mml:msub><mml:mi>P</mml:mi><mml:mn>13</mml:mn></mml:msub></mml:math> from photoproduction of hyperons Nikonov, V. A.; Anisovich, A. V.; Klempt, E. Physics Letters B, Vol. 662, Issue 3 https://doi.org/10.1016/j.physletb.2008.03.004	journal	April 2008
Electromagnetic production of kaons from protons, and baryon electromagnetic form factors Maxwell, Oren V. Physical Review C, Vol. 85, Issue 3 https://doi.org/10.1103/PhysRevC.85.034611	journal	March 2012
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The impact of $K^{+}\Lambda$ K + Λ photoproduction on the resonance spectrum Rönchen, D.; Döring, M.; Meißner, U. -G. The European Physical Journal A, Vol. 54, Issue 6 https://doi.org/10.1140/epja/i2018-12541-3	journal	June 2018
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