Electron and photon induced reactions on nuclei in the nucleon resonance region

Lehr, J.M.; Effenberger, M.; Mosel, U.

doi:10.1016/s0375-9474(99)00845-3

Cited by 53 publications

(102 citation statements)

References 51 publications

(92 reference statements)

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“…All those processes are implemented by an absorption probability depending on the in-medium collisional width for which we use the results of Oset and Salcedo [74]. We emphasize that the whole πN ∆ dynamics has been tested extensively and also compared to data in A A → π X [65], π A → X [71,75] and γ A → π X [69] and recently in pionic double charge exchange reactions [72].…”

Section: Neutrino-nucleus Reactionsmentioning

confidence: 99%

Neutral current neutrino-nucleus interactions at intermediate energies

2006

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We have extended our model for charged current neutrino-nucleus interactions developed in Phys. Rev. C 73, 065502 (2006) to neutral current reactions. For the elementary neutrino-nucleon interaction, we take into account quasielastic scattering, ∆ excitation and the excitation of the resonances in the second resonance region. Our model for the neutrino-nucleus collisions includes in-medium effects such as Fermi motion, Pauli blocking, nuclear binding, and final-state interactions. They are implemented by means of the Giessen Boltzmann-Uehling-Uhlenbeck (GiBUU) coupledchannel transport model. This allows us to study exclusive channels, namely pion production and nucleon knockout. We find that final-state interactions modify considerably the distributions through rescattering, charge-exchange, and absorption. Side-feeding induced by charge-exchange scattering is important in both cases. In the case of pions, there is a strong absorption associated with the in-medium pionless decay modes of the ∆, while nucleon knockout exhibits a considerable enhancement of low energy nucleons due to rescattering. At neutrino energies above 1 GeV, we also obtain that the contribution to nucleon knockout from ∆ excitation is comparable to that from quasielastic scattering.

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Section: Neutrino-nucleus Reactionsmentioning

confidence: 99%

Neutral current neutrino-nucleus interactions at intermediate energies

2006

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“…which in the case of baryons contains an effective scalar potential S [35]. The right-hand side of the BUU equation (called the collision integral) consists of a gain and a loss term for the phase space density F i at the different spacetime points, accounting for interactions between the particles beyond the mean-field potential.…”

Section: The Buu-modelmentioning

confidence: 99%

“…Furthermore, the quasifree contributions of single π 0 , double π 0 , and π 0 π ± photoproduction have been determined. The data are compared to the results of a semi-classical Boltzmann-Uehling-Uhlenbeck (BUU) transport model [34,35] which accounts for medium effects such as Fermi motion, nuclear binding, Pauli blocking, resonance broadening and includes a realistic description of the FSI. The treatment follows the trajectories of the particles through the nucleus and therefore yields additional information not accessible to experiment.…”

Section: Introductionmentioning

confidence: 99%

Photoproduction of πmesons from nuclei

et al. 2004

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Abstract. Photoproduction of neutral pions from nuclei (carbon, calcium, niobium, lead) has been studied for incident photon energies from 200 MeV to 800 MeV with the TAPS detector using the Glasgow photon tagging spectrometer at the Mainz MAMI accelerator. Data were obtained for the inclusive photoproduction of neutral pions and the partial channels of quasifree single π 0 , double π 0 , and π 0 π ± photoproduction. They have been analyzed in terms of the in-medium behavior of nucleon resonances and the pion -nucleus interaction. They are compared to earlier measurements from the deuteron and to the predictions of a Boltzmann-Uehling-Uhlenbeck (BUU) transport model for photon induced pion production from nuclei.

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“…The experimental study of meson electroproduction on the proton, currently underway at JLab, is presently providing data in this region [5,6]. Similar studies in nuclei would add information on the in-medium dynamics of these resonances and on possible modifications of baryon properties inside the nucleus [7].…”

Section: Introductionmentioning

confidence: 99%

Nuclear response functions for the N– transition

et al. 2003

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Parity-conserving and -violating response functions are computed for the inclusive electroexcitation of the N * (1440) (Roper) resonance in nuclear matter modeled as a relativistic Fermi gas. Using various empirical parameterizations and theoretical models of the N − N * (1440) transition form factors, the sensitivity of the response functions to details of the structure of the Roper resonance is investigated. The possibility of disentangling this resonance from the contribution of ∆ electroproduction in nuclei is addressed. Finally, the contributions of the Roper resonance to the longitudinal scaling function and to the Coulomb sum rule are also explored.

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Electron and photon induced reactions on nuclei in the nucleon resonance region

Cited by 53 publications

References 51 publications

Neutral current neutrino-nucleus interactions at intermediate energies

Neutral current neutrino-nucleus interactions at intermediate energies

Photoproduction of πmesons from nuclei

Nuclear response functions for the N– transition

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