Jülich-Bonn-Washington model for pion electroproduction multipoles

Mai, Maxim; Döring, Michael; Granados, Carlos; Haberzettl, H.; Meißner, Ulf‐G.; Rönchen, D.; Strakovsky, I. I.; Workman, R. L.

doi:10.1103/physrevc.103.065204

Cited by 33 publications

(31 citation statements)

References 283 publications

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“…A similar discussion of the analytic structure in the context of dynamical coupled-channel approaches can be found in Ref. [86] for the Jülich/Bonn/Washington approach [87][88][89] and in Ref. [90] for the EBAC/ANL-Osaka approach [91,92].…”

Section: Analytic Continuationmentioning

confidence: 63%

“…In addition, for the current case of πρ scattering in S and D-waves, the g are necessarily functions of spectator momentum, gL ≡ gL (p). Analogously one might think of resonance transition form factors that are closely related to pole residues depending on photon virtuality [89,102]. For a numerically stable method to calculate residues see Appendix C of Ref.…”

Section: B Discussionmentioning

confidence: 99%

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Pole position of the $a_1(1260)$ resonance in a three-body unitary framework

Sadasivan,

Alexandru,

Akdag

et al. 2021

Preprint

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Masses, widths, and branching ratios of hadronic resonances are quantified by their pole positions and residues with respect to transition amplitudes on the Riemann sheets of the complex energyplane. In this study we discuss the analytic structure in the physical energy region of three-body scattering amplitudes on such manifolds. As an application, we determine the pole position of the a1(1260) meson from the ALEPH experiment by allowing for πρ coupled channels in S-and D-wave. We find it to be √ s0 = (1232 +15+9 −0−11 − i266 +0+15 −22−27 ) MeV.

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Section: Analytic Continuationmentioning

confidence: 63%

Section: B Discussionmentioning

confidence: 99%

Pole position of the $a_1(1260)$ resonance in a three-body unitary framework

Sadasivan,

Alexandru,

Akdag

et al. 2021

Preprint

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“…The Jülich-Bonn model [431,449,450,430,436,451,452,453,454,455,197,201] is a dynamical coupled-channels (DCC) model for a combined analysis of pion-and photon-induced reactions. Recently, the model has been extended to an approach for single-meson electroproduction [456]. The electroproduction model is called the Jülich-Bonn-Washington model.…”

Section: The Jülich-bonn Modelmentioning

confidence: 99%

Light Baryon Spectroscopy

Thiel,

Afzal,

Wunderlich

2022

Preprint

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This review treats the advances in Light Baryon Spectroscopy of the last two decades, which were mainly obtained by measuring meson-production reactions at photon facilities all over the world. We provide a consistent compendium of experimental results, as well as a review of the theoretical methods of amplitude analysis used to analyze the data. The most significant datasets are presented in detail and are listed in combination with a full set of the relevant references. In addition, a brief summary of spin-formalisms, which are ubiquitous in Light Baryon Spectroscopy, as well as a review on complete experiments, are provided. The synthesis of the reviewed knowledge is presented in a full interpretation of the new results on the Light Baryon Spectrum.

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“…Refs. [31][32][33][34][35]) to determine the γ v pN * electrocouplings and to make stronger claims on the N * → KY couplings. Improving the statistical precision and extending the kinematic range of the electroproduction data on the K + Y differential cross sections and polarization observables will be critical to foster these efforts.…”

Section: Introductionmentioning

confidence: 99%

Beam-Recoil Transferred Polarization in $K^+Y$ Electroproduction in the Nucleon Resonance Region with CLAS12

Carman,

D'Angelo,

Lanza

et al. 2022

Preprint

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Beam-recoil transferred polarizations for the exclusive electroproduction of K + Λ and K + Σ 0 final states from an unpolarized proton target have been measured using the CLAS12 spectrometer at Jefferson Laboratory. The measurements at beam energies of 6.535 GeV and 7.546 GeV span the range of four-momentum transfer Q 2 from 0.3 to 4.5 GeV 2 and invariant energy W from 1.6 to 2.4 GeV, while covering the full center-of-mass angular range of the K + . These new data extend the existing hyperon polarization data from CLAS in a similar kinematic range but from a significantly larger dataset. They represent an important addition to the world data, allowing for better exploration of the reaction mechanism in strangeness production processes, for further understanding of the spectrum and structure of excited nucleon states, and for improved insight into the strong interaction in the regime of non-perturbative dynamics.

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Jülich-Bonn-Washington model for pion electroproduction multipoles

Cited by 33 publications

References 283 publications

Pole position of the $a_1(1260)$ resonance in a three-body unitary framework

Pole position of the $a_1(1260)$ resonance in a three-body unitary framework

Light Baryon Spectroscopy

Beam-Recoil Transferred Polarization in $K^+Y$ Electroproduction in the Nucleon Resonance Region with CLAS12

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