68 citations · 550 across the 39 of their papers we have counts for
18 papers · 1 filter
Decays of and resonances into , , and
A. V. Sarantsev, E. Klempt, K. V. Nikonov +7
The decays of and resonances into , and final states are studied in a coupled-channel analysis of data on pion- and photo-induced reactions. Improvements…
Truncated Partial-Wave Analysis for -photoproduction observables via Bayesian Statistics
Philipp Kroenert, Yannick Wunderlich, Farah Afzal +1
A truncated partial-wave analysis is performed for -photoproduction using the polarization observables and . Different truncation orders are analyzed for si…
Application of the single-channel, single-energy AA/PWA method to photoproduction
A. Švarc, Y. Wunderlich, L. Tiator
The new single-channel, single-energy partial wave analysis method based on a simultaneous use of amplitude and partial wave analysis called AA/PWA, developed and tested on pho…
New graphical criterion for the selection of complete sets of polarization observables and its application to single-meson photoproduction as well as electroproduction
Y. Wunderlich
This paper combines the graph-theoretical ideas behind Moravcsik's theorem with a completely analytic derivation of discrete phase-ambiguities, recently published by Nakayama. The…
Minimal complete sets for two pseudoscalar meson photoproduction
Philipp Kroenert, Yannick Wunderlich, Farah Afzal +1
For photoproduction reactions with final states consisting of two pseudoscalar mesons and a spin-1/2 baryon, 8 complex amplitudes need to be determined uniquely. A modified version…
Mathematical aspects of phase rotation ambiguities in partial wave analyses
Yannick Wunderlich
The observables in a single-channel -body scattering problem remain invariant once the amplitude is multiplied by an overall energy- and angle-dependent phase. This invariance i…
Complete experiments in pseudoscalar meson photoproduction
Yannick Wunderlich
The problem of extracting photoproduction amplitudes uniquely from so called complete experiments is discussed. This problem can be considered either for the extraction of full pro…
Amplitude- and truncated partial-wave analyses combined: A novel, almost theory-independent single-channel method for extracting photoproduction multipoles directly from measured data
A. Švarc, Y. Wunderlich, L. Tiator
Amplitude- and truncated partial-wave analyses are combined into a single procedure and a novel, almost theory-independent single-channel method for extracting multipoles directly…
The complete experiment problem of pseudoscalar meson photoproduction in a truncated partial wave analysis
Yannick Wunderlich
This dissertation treats the problem of complete experiments for pseudoscalar meson photoproduction, in the context of a truncated partial-wave analysis (TPWA). The work contains a…
Moravcsik's theorem on complete sets of polarization observables reexamined
Y. Wunderlich, P. Kroenert, F. Afzal +1
We revisit Moravcsik's theorem on the unique extraction of amplitudes from polarization observables, which has been originally published in 1985. The proof is (re-) written in a mo…
From Experimental Data to Pole Parameters in a Direct Way (Angle Dependent Continuum Ambiguity and Laurent + Pietarinen Expansion)
A. Švarc, Y. Wunderlich, H. Osmanović +8
Unconstrained partial-wave amplitudes obtained at discrete energies from fits to complete sets of eight independent observables which are required to uniquely reconstruct reaction…
Towards an understanding of discrete ambiguities in truncated partial wave analyses
Y. Wunderlich, A. Švarc, R. L. Workman +2
It is well known that the observables in a single-channel scattering problem remain invariant once the amplitude is multiplied by an overall energy- and angle-dependent phase. This…
A connection between angular dependent phase ambiguities and the uniqueness of the partial wave decomposition
A. Švarc, Y. Wunderlich, H. Osmanović +8
Unconstrained partial-wave amplitudes obtained at discrete energies from fits to complete sets of experimental data may not vary smoothly with energy, and are in principle non-uniq…
Amplitude reconstruction from complete electroproduction experiments and truncated partial-wave expansions
L. Tiator, R. L. Workman, Y. Wunderlich +1
We compare the methods of amplitude reconstruction, for a complete experiment and a truncated partial-wave analysis, applied to the electroproduction of pseudoscalar mesons. We giv…
Amplitude reconstruction from complete experiments and truncated partial-wave expansions
R. L. Workman, L. Tiator, Y. Wunderlich +2
We compare the methods of amplitude reconstruction, for a complete experiment and a truncated partial wave analysis, applied to the photoproduction of pseudo-scalar mesons. The app…
The Impact of New Polarization Data from Bonn, Mainz and Jefferson Laboratory on Multipoles
A. V. Anisovich R. Beck, M. Döring, M. Gottschall +14
New data on pion-photoproduction off the proton have been included in the partial wave analyses Bonn-Gatchina and SAID and in the dynamical coupled-channel approach Jülich-Bonn. Al…
The complete experiment for photoproduction of pseudoscalar mesons in a truncated partial wave analysis
Y. Wunderlich, R. Beck, L. Tiator
The complete experiment problem in the truncated partial wave analysis of pseudoscalar meson photoproduction with suppressed t-channel exchanges is investigated. The focus is set t…
PWA tools in Hadronic Spectroscopy
S. Ceci, M. Döring, E. Epple +21
The mini-proceedings of the Workshop on PWA tools in Hadronic Spectroscopy held in Mainz from February 18th to 20th, 2013.