<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>N</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>1520</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>3</mml:mn><mml:mo stretchy="false">/</mml:mo><mml:msup><mml:mn>2</mml:mn><mml:mo>−</mml:mo></mml:msup></mml:math>Helicity Amplitudes from an Energy-Independent Multipole Analysis Based on New Polarization Data on Photoproduction of Neu

Hartmann, J.; Kalischewski, F.; Hillert, W.; Metag, V.; Jude, T. C.; Schmitz, R.; Клейн, Ф.; Lang, Μ.; Messi, F.; Schmidt, Ch.; Hammann, Ch.; Dieterle, M.; Novotny, R.; Friedrich,; Pee, H. van; Herick, J.; Thiel, A.; Берлин, А. А.; Brinkmann, K.-Th.; Keshelashvili, I.; Funke, Ch.; Becker, M.; Hannappel, J.; Fornet-Ponse, K.; Sarantsev, A.; Müller, J.; Honisch, Christiane; Klempt, E.; Nanova, M.; Rostomyan, T.; Reicherz, G.; Thämer, Ph.; Käser, A.; Koop, K.; Meyer, W.; Böse, S.; Credé, V.; Gridnev, A.; Kube, M.; Dutz, H.; Beloglazov, Y. A.; Urban, M.; Rosenbaum, Ch.; Piontek, D.; Gutz, E.; Frommberger, F.; Wunderlich, Y.; Beck, R.; Jahn, O.; Nikonov, V. A.; Klassen, P.; Schmieden, H.; Wiedner, U.; Kalinowsky, H.; Witthauer, L.; Krusche, B.; Elsner, D.; Bayadilov, D.; Wilson, A.; Anisovich, A. V.; Lopatin, I.; Eberhardt, H.; Bichow, M.; Hoffmeister, P.; Sokhoyan, V.; Hannen, V.; Roth, Bradley J.; Seifen, T.; Winnebeck, A.; Walther, Dirk; Grüner, M.; Makónyi, K.; Wendel, Ch.; Kaiser, David; Gottschall, M.; Novinski, D.; Thoma, U.

doi:10.1103/physrevlett.113.062001

Cited by 29 publications

(29 citation statements)

References 27 publications

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“…Together with our data on G, T , P and H, these data led to a determination of the N(1520)3/2 − helicity amplitudes from an energy-independent multipole analysis [102] and to a significantly better determination of the contributing multipole amplitudes (see Fig. 18 in the contribution of project A.2 "Partial Wave Analysis" to these proceedings).…”

Section: γPsupporting

confidence: 55%

“…It should be mentioned that this was the first time that the available data allowed for an energy-independent reconstruction of multipoles in the energy range covering the second resonance region of N(1520)3/2 − and N(1535)1/2 − . Based on this analysis, the helicity amplitudes of N(1520)3/2 − were deduced with minimal model assumptions [102]. The result is inconsistent at the level of more than 2σ with older (model-dependent) determinations and supports those of the BnGa PWA.…”

Section: γP → π 0 P: the Polarization Observables T P Hmentioning

confidence: 80%

“…The values of the double-polarization observable G reported in this subsection have been used together with the data on the observables E [100,101], and T , P, and H [102,103]. As an example, the real and imaginary parts of the E 0+ multipole derived from these new fits to the data are shown in Fig.…”

Section: Differential Cross Sections and The Beam Asymmetry σmentioning

confidence: 99%

“…The measurements [102,103] were performed using two orthogonal settings of the polarization plane ( and ⊥). The polarization reached its maximum of p γ = 65% at 850 MeV and dropped down to 40% at 700 MeV.…”

Section: γP → π 0 P: the Polarization Observables T P Hmentioning

confidence: 99%

“…ref-pic:tph for selected bins. The lower energy data (up to W = 1620 MeV) were used as basis for an energy-independent trucated partial wave analysis in sliced energy bins (see the discussion in project A.2 "Partial Wave Analysis" and in [102]). In addition to the data on T , P, and H, differential cross section data (e.g.…”

Section: γP → π 0 P: the Polarization Observables T P Hmentioning

confidence: 99%

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Spectroscopy of baryon resonances

Beck

Thoma

2017

EPJ Web Conf.

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Abstract. Within project A.1 of the SFB/TR16 "Subnuclear Structure of Matter", a large amount of data on photoproduction reactions has been accumulated at the Bonn Electron Stretcher Accelerator ELSA with the CBELSA/TAPS detector and was analysed in detail. In particular, data have been taken with unpolarized or with linearly or circularly polarized photons and with unpolarized or with longitudinally or transversely polarized protons. Photoproduction off neutrons was studied to determine the helicity amplitudes for the excitation of resonances off neutrons. In a partial wave analysis of the data, new resonances have been found and the properties of new and of known resonances have been determined, including the measurement of partial widths of so far unmeasured decay modes.

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Section: γPsupporting

confidence: 55%

Section: γP → π 0 P: the Polarization Observables T P Hmentioning

confidence: 80%

Section: Differential Cross Sections and The Beam Asymmetry σmentioning

confidence: 99%

Section: γP → π 0 P: the Polarization Observables T P Hmentioning

confidence: 99%

Section: γP → π 0 P: the Polarization Observables T P Hmentioning

confidence: 99%

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Spectroscopy of baryon resonances

Beck

Thoma

2017

EPJ Web Conf.

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Polarization Observables T and F in $$\pi ^0$$ Photoproduction Off the Proton with CLAS g9 Experiment

Jiang

Strauch

2018

Few-Body Syst

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Data onIsandIcin
Sokhoyan¹,
Gutz²,
Pee³
et al. 2015
Physics Letters B
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Data on I s and I c in γ p → pπ 0 π 0 reveal cascade decays of N(1900) via N(1520)π CBELSA/TAPS Collaboration Photoproduction of two neutral pions off the proton is studied using linearly polarized photons, and the polarization observables I s and I c are measured for the first time. These two observables are unique to multi-meson final states; they characterize correlations between the linear photon polarization and the direction of outgoing single particles in photoproduction of three-body final states. The I s and I c distributions suggest that, in the 1.8 to 2.0 GeV mass region, the N(1520)3/2 − π intermediate state is reached with reaction dynamics consistent with a dominant J P = 3/2 + wave. These data are included in the Bonn-Gatchina (BnGa) partial wave analysis which is based on a large variety of data; the analysis confirms a significant contribution from the reaction chain γ p → N(1900)3/2 + → N(1520)3/2 − π 0 → pπ 0 π 0 . . of QCD. The majority of nucleon and excitations listed in the Review of Particle Physics (RPP) [1] were discovered in partial wave analyses of π N elastic scattering experiments. However, a large fraction of the resonances reported by Höhler and by Cutkosky and their collaborators [2,3] were not confirmed in a later analysis based on a much larger data sample [4]. Quark models [5,6] and lattice QCD [7] predict even more resonances than have been observed in [2,3]. Obviously, there is a large number of resonances with weak coupling to π N which cannot be extracted http://dx.

show abstract

N(1520)3/2−Helicity Amplitudes from an Energy-Independent Multipole Analysis Based on New Polarization Data on Photoproduction of Neu

Cited by 29 publications

References 27 publications

Spectroscopy of baryon resonances

Spectroscopy of baryon resonances

Polarization Observables T and F in $$\pi ^0$$ Photoproduction Off the Proton with CLAS g9 Experiment

Data onIsandIcin
Sokhoyan¹,
Gutz²,
Pee³
et al. 2015
Physics Letters B
Self Cite
15
0
8
0
View full text Add to dashboard Cite

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N(1520)3/2−Helicity Amplitudes from an Energy-Independent Multipole Analysis Based on New Polarization Data on Photoproduction of Neu

Cited by 29 publications

References 27 publications

Spectroscopy of baryon resonances

Spectroscopy of baryon resonances

Polarization Observables T and F in $$\pi ^0$$ Photoproduction Off the Proton with CLAS g9 Experiment

Data onIsandIcinSokhoyan1, Gutz2, Pee3 et al. 2015Physics Letters BSelf Cite15080View full textAdd to dashboardCite

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Data onIsandIcin
Sokhoyan¹,
Gutz²,
Pee³
et al. 2015
Physics Letters B
Self Cite
15
0
8
0
View full text Add to dashboard Cite