Dynamical coupled-channels study of meson production reactions from EBAC@JLab

Kamano, H.; Armstrong, David; Burkert, Volker; Chen, Jianping; Detmold, Will; Dudek, Jo; Melnitchouk, Wally; Richards, David

doi:10.1063/1.3647190

Cited by 2 publications

(3 citation statements)

References 11 publications

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“…(15), we need N-reaction total cross sections as inputs. In this work, we employ those obtained from the DCC approach developed by the authors [21,22]. This approach is based on a DCC model [32], within which the couplings among relevant meson-baryon reaction channels, including the three-body N channel, are fully taken into account, so that the scattering amplitudes satisfy two-body as well as three-body unitarity.…”

Section: Resultsmentioning

confidence: 99%

“…[21,32] to neutrino-induced forward meson (Two-dashed dotted curves) Contribution from X ¼ KAE only. As a comparison, results from the SL model [14], in which F 2 is calculated directly without relying on the PCAC hypothesis, are shown as dotted curves.…”

Section: Summary and Prospects For Future Directionsmentioning

confidence: 99%

“…In this context, our recent development of a dynamical coupled-channels (DCC) model is quite encouraging [21,22]. Our DCC model is based on a comprehensive analysis of N, N !…”

Section: Introductionmentioning

confidence: 99%

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Neutrino-induced forward meson-production reactions in nucleon resonance region

et al. 2012

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As a first step toward developing a reaction model that enables a comprehensive description of neutrino-nucleon reactions in the nucleon resonance region, we have applied for the first time a dynamical coupled-channels model, which successfully describes N, N ! N, N, N, KÃ, and KAE reactions up to W ¼ 2 GeV, to predict the neutrino-induced meson production reactions with ÁS ¼ 0 at the forward-angle limit. This has been achieved by relating the divergence of the axial current matrix elements at Q 2 ¼ 0 to the N ! X reaction amplitudes through the partially conserved axial current hypothesis. We present the contributions from each of the N, N, N, KÃ, and KAE channels to the F 2 structure function at the Q 2 ! 0 limit up to W ¼ 2 GeV.

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Section: Resultsmentioning

confidence: 99%

Section: Summary and Prospects For Future Directionsmentioning

confidence: 99%

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Neutrino-induced forward meson-production reactions in nucleon resonance region

et al. 2012

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Electromagnetic structure of the nucleon and the Roper resonance in a light-front quark approach

et al. 2014

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A relativistic light-front quark model is used to describe both the elastic nucleon and nucleonRoper transition form factors in a large Q 2 range, up to 35 GeV 2 for the elastic and up to 12 GeV 2 for the resonance case. Relativistic three-quark configurations satisfying the Pauli exclusion principle on the light-front are used for the derivation of the current matrix elements. The Roper resonance is considered as a mixed state of a three-quark core configuration and a molecular N + σ hadron component. Based on this ansatz we obtain a realistic description of both processes, elastic and inelastic, and show that existing experimental data are indicative of a composite structure of the Roper resonance.

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Dynamical coupled-channels study of meson production reactions from EBAC@JLab

Abstract: Abstract. We present the current status of a combined and simultaneous analysis of meson production reactions based on a dynamical coupled-channels (DCC) model, which is conducted at Excited Baryon Analysis Center (EBAC) of Jefferson Lab.

Cited by 2 publications

References 11 publications

Neutrino-induced forward meson-production reactions in nucleon resonance region

Neutrino-induced forward meson-production reactions in nucleon resonance region

Electromagnetic structure of the nucleon and the Roper resonance in a light-front quark approach

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