Nucleon and Δ resonances in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>K</mml:mi><mml:mo>Σ</mml:mo><mml:mo stretchy="false">(</mml:mo><mml:mn>1385</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math>photoproduction from nucleons

Oh, Yongseok; Ko, Che Ming; Nakayama, K.

doi:10.1103/physrevc.77.045204

Cited by 92 publications

(172 citation statements)

References 46 publications

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“…For a j = 1 2 resonance, the magnitudes of the coupling constants f 1 and h 1 can be determined by the radiative and strong decay widths. However, for nucleon resonances with high spin j ≥ 3 2 , the decay widths are not enough to determine coupling constants, f 1 and f 2 for radiative decay or h 1 and h 2 for strong decay [17]. Therefore, we need to know the decay amplitudes to determine the coupling constants uniquely.…”

Section: B Nucleon Resonancesmentioning

confidence: 99%

“…The Lagrangians are also adopted by the previous works on the nucleon resonances with spins 3/2 or 5/2 [12,14,17,27]. The Lagrangian for the strong decay can be written as…”

Section: B Nucleon Resonancesmentioning

confidence: 99%

“…[15,16], the electromagnetic and strong decays were studied in the CQM, with which the contributions of the nucleon resonances in the phtoproductions can be calculated in Ref. [17]. In this work we will investigate the Λ(1520) photoproduction within the effective Lagrangian method, with the nucleon resonances included according to the CQM prediction, to find the roles of nucleon resonances, especially the D 13 and D 15 states around 2.1 GeV, played in the reaction mechanism.…”

Section: Introductionmentioning

confidence: 99%

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Roles of nucleon resonances inΛ(1520) photoproduction off the proton

Chen

2012

Phys. Rev. C

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In this work the roles of the nucleon resonances in the Λ(1520) photoproduction off proton target are investigated within the effective Lagrangian method. Besides the Born terms, including contact term, s-, u-and K exchanged t-channels, vector meson K * exchanged t−channel is considered in our investigation, which is negligible at low energy and important at high energy. The important nucleon resonances predicted by the constituent quark model (CQM) are considered and the results are found well comparable with the experimental data. Besides the dominant D 13 (2080), the resonance [ 5 2 − ] 2 (2080) predicted by the CQM is found important to reproduce the experimental data. Other nucleon resonances are found to give small contributions in the channel considered in this work. With all important nucleon resonances predicted by CQM, the prediction of the differential cross section at the energy up to 5.5GeV are presented also, which can be checked by the future CLAS experimental data.

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Section: B Nucleon Resonancesmentioning

confidence: 99%

“…The Lagrangians are also adopted by the previous works on the nucleon resonances with spins 3/2 or 5/2 [12,14,17,27]. The Lagrangian for the strong decay can be written as…”

Section: B Nucleon Resonancesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Roles of nucleon resonances inΛ(1520) photoproduction off the proton

Chen

2012

Phys. Rev. C

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“…[4,5,8,15]. Since there are two amplitudes A 1/2 and A 3/2 for the resonances with J > 1/2, the coupling constants f 1 and f 2 in L Rnγ can be extracted from the helicity amplitudes of the resonance R, A n 1/2 and A n 3/2 .…”

Section: B Decay Of Nucleon Resonance In the Constituent Quark Modelmentioning

confidence: 99%

“…In Ref. [15] the coupling constants was related to the decay amplitudes and this method was applied in the studies about Λ(1520) and Σ(1385) photoproductions [4,5,8]. The decays of a nucleon resonance to a resonance has not been studied in the literature.…”

Section: B Decay Of Nucleon Resonance In the Constituent Quark Modelmentioning

confidence: 99%

Theoretical investigation of the decay of theN(2120)resonance to nucleon resonances near 1.7 GeV

Huang

Chen

et al. 2015

Phys. Rev. C

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Background: Until now the knowledge about nucleon resonances with a mass higher than 2 GeV has been scarce. Huge amounts of experimental data of the multipion photoproduction have been accumulated, and more can be expected in the future in facilities such as JLab 12 GeV. It makes it possible to investigate the decay of a nucleon resonance into another nucleon resonance. Purpose:The possibility to research the decay of the N(2120) to nucleon resonances near 1.7 GeV in the three-pion photoproduction will be explored to provide useful information for future experimental study. Method:The pion and radiative decay amplitudes of nucleon resonances are studied within the constituent quark model, which is used to calculate the couplings constants, especially for the decay of a nucleon resonance near 2.1 GeV to another nucleon resonance near 1.7 GeV. The three-pion photoproduction off the neutron target, i.e.,γn → π − π − ∆ ++ → π − π − π + p, is investigated based on the effective Lagrangian method with the coupling constant obtained form the decay amplitudes. Results:The resonance contribution with a state N( 2 P M ) 3 2 − near 2.1 GeV decaying to a state N( 4 P M ) 5 2 − near 1.7 GeV, i. e., N(2120) → N(1675)π is dominant in the process considered. The total cross section from the resonance contribution is at the order of 1 µb and can be easily distinguished from the background. Conclusions:Our results suggest it is practicable to research the decay of the N(2120) to the N(1675) in experiment.

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