The complete-experiment problem of photoproduction of pseudoscalar mesons in a truncated partial-wave analysis

Wunderlich, Y.; Beck, R.; Tiator, L.

doi:10.1103/physrevc.89.055203

Cited by 49 publications

(100 citation statements)

References 29 publications

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“…And this becomes more problematic, when the truncation level increases. In the ambiguity studies of Omelaenko [4,41] sets of 5 observables, as {σ 0 , Σ, T, P, F } were discussed, which, in numerical analysis, show up more robust than the minimal sets of four. Such sets will soon become available, when all data that are presently in progress, are finally analyzed.…”

Section: Results With Experimental Datamentioning

confidence: 99%

“…The general problem with the CEA is, however, that it does not directly lead to partial waves, since an angle-dependent overall phase remains unknown [3]. Therefore, the concept of a truncated partial wave analysis (TPWA) has been extensively studied recently [4], where only partial waves up to an angular momentum of L max are analyzed from the data, while all other higher partial waves are simply expected to be zero. Such TPWA analyses have been studied for kaon and pion photoproduction as well as for electroproduction [5,6].…”

Section: Introductionmentioning

confidence: 99%

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Fixed- t analyticity as a constraint in single-energy partial-wave analyses of meson photoproduction reactions

et al. 2018

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Partial wave amplitudes of meson photoproduction reactions are an important source of information in baryon spectroscopy. We investigate a new approach in single-energy partial wave analyses of these reactions. Instead of using a constraint to theoretical models in order to achieve solutions which are continuous in energy, we enforce the analyticity of the amplitudes at fixed values of the Mandelstam variable t. We present an iterative procedure with successive fixed-t amplitude analyses which constrain the single-energy partial wave analyses and apply this method to the γp → ηp reaction. We use pseudo data, generated by the EtaMAID model, to test the method and to analyze ambiguities. Finally, we present an analytically constrained partial wave analysis using experimental data for four polarization observables recently measured at MAMI and GRAAL in the energy range from threshold to √ s = 1.85 GeV.

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Section: Results With Experimental Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fixed- t analyticity as a constraint in single-energy partial-wave analyses of meson photoproduction reactions

et al. 2018

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“…For the definition of the CGLN amplitudes and their partial wave decompositions for pion-nucleon scattering [71] and photoproduction of a pseudoscalar [45], we refer the interested readers to the original publications. The model-independent determination of these amplitudes is the problem of the so-called complete experiment that has attracted much attention lately [72][73][74], including a dedicated workshop [75]. See Ref.…”

Section: Direct-channel Productionmentioning

confidence: 99%

Analysis Tools for Next-Generation Hadron Spectroscopy Experiments

Battaglieri¹,

Briscoe²,

Celentano³

et al. 2015

Acta Phys. Pol. B

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The series of workshops on New Partial-Wave Analysis Tools for Next-Generation Hadron Spectroscopy Experiments was initiated with the ATHOS 2012 meeting, which took place in Camogli, Italy, June 20-22, 2012. It was followed by ATHOS 2013 in Kloster Seeon near Munich, Germany, May 21-24, 2013. The third, ATHOS3, meeting is planned for April 13-17, 2015 at The George Washington University Virginia Science and Technology Campus, USA. The workshops focus on the development of amplitude analysis tools for meson and baryon spectroscopy, and complement other programs in hadron spectroscopy organized in the recent past including the INT-JLab Workshop on Hadron Spectroscopy in Seattle in 2009, the International Workshop on Amplitude Analysis in Hadron Spectroscopy at the ECT*-Trento in 2011, the School on Amplitude Analysis in Modern Physics in Bad Honnef in 2011, the Jefferson Lab Advanced Study Institute Summer School in 2012, and the School on Concepts of Modern Amplitude Analysis Techniques in Flecken-Zechlin near Berlin in September 2013. The aim of this document is to summarize the discussions that took place at the ATHOS 2012 and ATHOS 2013 meetings. We do not attempt a comprehensive review of the field of amplitude analysis, but offer a collection of thoughts that we hope may lay the ground for such a document.Comment: 28 pages, 11 figures, proceedings of the ATHOS 2012 and ATHOS 2013 meeting

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“…The observables capable of resolving the double ambiguity can be shown 6,8 to be F and G as well as any of the BR and TR observables. Therefore, once completeness in a TPWA is considered disregarding measurement uncertainty, there appear Complete Experiments containing just 5 observables, for example…”

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confidence: 99%

“…The roots in combination with the coefficient a 2L form a set of complex variables that are equivalent to the 4 max multipoles for all orders max . The ambiguities of the group S observables can now be read off from equation (8). The former consist of all multipole solutions corresponding to sets of roots that are related by complex conjugation.…”

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confidence: 99%