Scrutinizing the evidence for 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>N</mml:mi><mml:mo>(</mml:mo><mml:mn>1685</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:math>

Anisovich, A. V.; Burkert, Volker; Klempt, E.; Nikonov, V. A.; Sarantsev, A.; Thoma, U.

doi:10.1103/physrevc.95.035211

Cited by 17 publications

(14 citation statements)

References 30 publications

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“…Moduli [in (GeV) −1/2 × 10 −3 ] and phases (in degrees) of the photon decay amplitudes at the pole for neutron A 1/2 (n) and A 3/2 (n) from the SAID MA27 [13] and MA19 solutions. Pole results from the Bonn-Gatchina (BnGa) analysis are included for comparison [54] [BW values are from Ref. [55]].…”

Section: Impact Of the Present Data On Partial-wave Analysismentioning

confidence: 99%

Cross section for γn→π0n measured at the Mainz A2 experiment

Briscoe¹,

Hadžimehmedović²,

Kudryavtsev³

et al. 2019

Phys. Rev. C

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Section: Impact Of the Present Data On Partial-wave Analysismentioning

confidence: 99%

Cross section for γn→π0n measured at the Mainz A2 experiment

Briscoe¹,

Hadžimehmedović²,

Kudryavtsev³

et al. 2019

Phys. Rev. C

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“…The * denotes that the parameter is at its boundary. erties [78][79][80]. Rather, full consistency is obtained by assuming that the peak is generated by the interference between the N (1535)1/2 − and N (1650)1/2 − resonances.…”

Section: Search For a Narrow Resonancementioning

confidence: 99%

Neutron helicity amplitudes

et al. 2017

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The helicity amplitudes for the photoproduction of nucleon resonances excited from neutrons are determined in the Bonn-Gatchina coupled-channel partial wave analysis. Upper limits for the decay fraction of the pentaquark candidate N (1685) → K 0 Λ are given. The electric and magnetic couplings at the pole positions are also tabulated, and these are used to suggest candidates for possible multiplets with quark-spin 1/2 and 3/2 content.

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“…The SAID MA19 solution provides new results on the helicity amplitudes A 1/2 and A 3/2 of the photon decays N * → γn for the N (1440)1/2 + , N (1520)3/2 − , and N (1535)1/2 − and N (1650)1/2 − states (Table 1). Here comparisons are made with the Bonn-Gatchina (BnGa) [65,66] values and with an earlier SAID determination. For the N (1520), the PDG2018 [67] lists only Breit-Wigner (BW) values.…”

Section: Neutron Couplingsmentioning

confidence: 99%

“…Table 1: Moduli [in (GeV) −1/2 × 10 −3 ] and phases (in degrees) of the photon-decay amplitudes N * → nγ at the pole for A 1/2 and A 3/2 from the SAID MA27 [35] and MA19 [60] solutions. Pole results from the Bonn-Gatchina (BnGa) analysis are included for comparison [65] (BW values are from Ref. [66]).…”

Section: Neutron Couplingsmentioning

confidence: 99%

On the Photoproduction Reactions $γd\toπNN$

Briscoe,

Kudryavtsev,

Strakovsky

et al. 2021

Preprint

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A review of our works providing a theoretical description of incoherent pion photoproduction on the deuteron is presented. The existing γd → πNN data are analysed, especially those obtained more recently by the CLAS Collaboration at JLab, the A2 Collaboration at MAMI at Mainz, and the PION@MAX-lab Collaboration at Lund. A procedure, which accounts for the final-state interactions (FSI), is applied to extract γn → πN differential cross sections from the deuteron data. The role of FSI is discussed. We also comment on the results of other works in connection with some discrepancies seen in comparing the model with experiment. The electromagnetic properties of baryon N * resonances, improved using the extracted γn → πN differential cross sections are presented. A model description of the cross section data from charged-pion photoproduction reactions γd → π ± N N near threshold is also given. The γd → π − pp data are used to extract the E 0+ multipole and total cross section of the reaction γn → π − p near threshold.

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Scrutinizing the evidence for N(1685)

Cited by 17 publications

References 30 publications

Cross section for γn→π0n measured at the Mainz A2 experiment

Cross section for γn→π0n measured at the Mainz A2 experiment

Neutron helicity amplitudes

On the Photoproduction Reactions $γd\toπNN$

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