Nucleon-nucleon resonances
نویسندگان
چکیده
منابع مشابه
Excitation of Nucleon Resonances
I discuss developments in the area of nucleon resonance excitation, aimed at putting our understanding of nucleon structure in the regime of strong QCD on a qualitatively new level. They involve the collection of high quality data in various channels, a more rigorous approach in the search for “missing” resonances, an effort to compute some critical quantities in nucleon resonance excitations f...
متن کاملElectroproduction of nucleon resonances
The unitary isobar model MAID has been extended and used for a partial wave analysis of pion photoand electroproduction in the resonance region W < 2 GeV. Older data from the world data base and more recent experimental results from Mainz, Bates, Bonn and JLab for Q up to 4.0 (GeV/c) have been analyzed and the Q dependence of the helicity amplitudes have been extracted for a series of four star...
متن کاملNucleon Resonances in Meson Nucleon Scattering with Strangeness Production
An effective Lagrangian model in a coupled channels framework is applied to extract nucleon resonance parameters. In the K-matrix approximation, we simultaneously analyze all the available data for the transitions from πN to five possible meson-baryon final states, πN, ππN, ηN,KΛ, and KΣ, in the energy range from πN threshold up to √ s = 2 GeV. In this work, we focus our efforts on the KΣ chann...
متن کاملNucleon resonances in ω photoproduction
The role of the nucleon resonances (N) in ω photoproduction is investigated by using the resonance parameters predicted by Capstick and Roberts [Phys. Rev. D 46, 2864 (1992); 49, 4570 (1994)]. In contrast with the previous investigations based on the SU(6) × O(3) limit of the constituent quark model, the employed N → γN and N → ωN amplitudes include the configuration mixing effects due to the r...
متن کاملNucleon resonances in polarized ω photoproduction
The role of the nucleon resonances (N∗) in ω photoproduction is investigated by using the resonance parameters predicted by Capstick and Roberts. The contributions from the nucleon resonances are found to be significant in various spin asymmetries. In particular, we found that a crucial test of our predictions can be made by measuring the parity asymmetry and beam-target double asymmetry at for...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 1980
ISSN: 0375-9474
DOI: 10.1016/0375-9474(80)90176-1