Inclusive ω photoproduction from nuclei and ω in the nuclear medium
نویسندگان
چکیده
منابع مشابه
Inclusive ω photoproduction from nuclei and ω in the nuclear medium
With the aim of extracting information on the shift of the ω mass in the nuclear medium we analyze data obtained at ELSA from where claims for evidence of a mass shift of the ω have been made. We develop a Monte Carlo simulation code which takes into account the possible reactions in the experimental set up of (γ A → π0γ X) in the vicinity of the ω production region with subsequent ω → π0γ deca...
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Coherent ω photoproduction from nuclei and ω properties in nuclear matter. Abstract. The coherent ω-meson photoproduction from nuclei is proposed as a phenomenological method to evaluate the momentum dependence of ω-meson mass shift and width in nuclear matter. We analyze available data on un-separated coherent and incoherent ω-meson photoproduction from nuclei and extract the imaginary part of...
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The feasibility to study the in-medium properties of the ω meson in photon induced reactions on nuclei is investigated by means of a semiclassical transport model. The calculations are dedicated to an experiment presently being analyzed by the TAPS/Crystal Barrel collaborations. A full coupled-channel treatment of final state interactions allows a quantitative analysis of the influence of absor...
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We propose the (γ, p) reaction as a means of producing possible quasi-bound states of ω mesons in nuclei. We use an effective Lagrangian, based on chiral SU (3) symmetry and vector meson dominance, in order to construct the ω-nuclear potential. The contribution of bound ω states is observable in the missing energy spectra of protons emitted in forward direction for several nuclei.
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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...
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ژورنال
عنوان ژورنال: The European Physical Journal A
سال: 2007
ISSN: 1434-6001,1434-601X
DOI: 10.1140/epja/i2006-10169-6