Extraction of 
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 observables from deuteron-target data

Nakamura, Satoshi

doi:10.1103/physrevc.98.042201

Cited by 9 publications

(13 citation statements)

References 33 publications

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“…The ηN → ηN rescattering gives a slight enhancement in the backward direction, which is important for this nice agreement. A similar DCCbased model for γd → πNN [9,10] also gives predictions that agree well with data by taking account of significant rescattering effects.…”

Section: Resultssupporting

confidence: 57%

η Photoproduction off the Deuteron and Low-Energy η-Nucleon Interaction

Nakamura

Kamano

Ishikawa

2019

Proceedings of the 8th International Conference on Quarks and Nuclear Physics (QNP2018)

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We study η photoproduction off the deuteron (γd → ηpn) at a special kinematics: ∼ 0.94 GeV of the photon beam energy and ∼ 0 • of the scattering angle of the proton. This kinematics is ideal to extract the low-energy η-nucleon scattering parameters such as a ηN (scattering length) and r ηN (effective range) because the η-nucleon elastic scattering is significantly enhanced. We show that if a ratio R, the γd → ηpn cross section divided by the γp → ηp cross section convoluted with the proton momentum distribution in the deuteron, is measured with 5% error, Re[a ηN ] (Re[r ηN ]) can be determined at the precision of ∼ ±0.1 fm (∼ ±0.5 fm), significantly narrowing down the currently estimated range of the parameters. The measurement is ongoing at

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Section: Resultssupporting

confidence: 57%

η Photoproduction off the Deuteron and Low-Energy η-Nucleon Interaction

Nakamura

Kamano

Ishikawa

2019

Proceedings of the 8th International Conference on Quarks and Nuclear Physics (QNP2018)

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“…Prior to the present work, the ANL-Osaka DCC model has been applied to electroweak reactions on the simplest nucleus, the deuteron [99][100][101][102]. Predictions from the DCC-based model, which includes the impulse as well as N N and meson-nucleon rescattering mechanisms, agree reasonably well with the data on γd → πN N [100,102] and γd → ηN N [99].…”

Section: Pion-production Mechanismsmentioning

confidence: 63%

Electroweak pion production on nuclei within the extended factorization scheme

et al. 2019

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We have applied the extended factorization scheme to investigate the electroweak pion production on nuclei. The ANL-Osaka model, which was obtained by analyzing the data of πN , γN , N (e, e π) and N (ν, µ π) reactions up to invariant mass W = 2 GeV, is used to generate the matrix elements of current operators relevant to pion-production off the nucleon. Medium effects on the ∆ (1232) component of meson-exchange current are included by using a ∆-nucleus potential determined from the previous ∆-hole model studies of pion-nucleus reactions. Nuclear correlations in the initial target state and in the spectator system(s) are modeled using realistic hole spectral functions. As a first step, we show that the data of 12 C(e, e ) up to the ∆ (1232) region can be described reasonably well. The interplay between the pion production and two-body meson-exchange mechanisms is shown to be essential in improving the agreement with the data in the "dip" region, between the quasielastic and the ∆ (1232) peaks. Predictions for 12 C(ν, µ π) have also been made. They can be used to estimate pion-emission rates in neutrino-nucleus cross section, which constitutes an important systematic uncertainty to the reconstructed neutrino energy. With further improvements of the Metropolis Monte-Carlo techniques to account for final states comprised of more than two particles, our approach can be employed up to W = 2 GeV, where two-pion production and higher mass nucleon resonances must be included for analyzing the data from accelerator-based neutrinooscillation experiments.

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“…(See Refs. [16][17][18][19][20][21][22][23][24][25][26][27] and references therein). Observables in the γd reactions have been compared with new measurements as they became available.…”

Section: Introductionmentioning

confidence: 99%

“…Among the above-mentioned papers, the procedure for extracting the γn → π − p and γn → π 0 n observables from γd → π − pp [32][33][34][35] and γd → π 0 pn [36][37][38][39] data was specially considered in Refs. [25][26][27] in the framework of the model with the impulse-approximation amplitude added by FSI terms. At the end of Section 4, we shall comment some differences between their and our results discussed in Refs.…”

Section: Introductionmentioning

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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Extraction of γn→πN observables from deuteron-target data

Cited by 9 publications

References 33 publications

η Photoproduction off the Deuteron and Low-Energy η-Nucleon Interaction

η Photoproduction off the Deuteron and Low-Energy η-Nucleon Interaction

Electroweak pion production on nuclei within the extended factorization scheme

On the Photoproduction Reactions $γd\toπNN$

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