منابع مشابه
Scattering of vector mesons off nucleons
We construct a relativistic and unitary approach to ’high’ energy pionand photonnucleon reactions taking the πN, π∆, ρN , ωN , ηN,KΛ,KΣ final states into account. Our scheme dynamically generates the sand d-wave nucleon resonances N(1535), N(1650) and N(1520) and isobar resonances ∆(1620) and ∆(1700) in terms of quasi-local interaction vertices. The description of photon-induced processes is ba...
متن کاملMeson-nucleon Scattering and Vector Mesons in Nuclear Matter *
The electromagnetic decay of the vector mesons into e+e− and μ+μ− pairs makes them particularly well suited for exploring the conditions in dense and hot matter in nuclear collisions. The lepton pairs provide virtually undistorted information on the mass distribution of the vector mesons in the medium. The lepton-pair spectrum in nucleus-nucleus collisions at SPS energies exhibits a low-mass en...
متن کاملFrom Meson-nucleon Scattering to Vector Mesons in Nuclear Matter
We employ meson-nucleon scattering data to deduce the properties of the low-mass vector mesons in nuclear matter, and present results for the ρ and ω in-medium spectral functions. The corresponding thermal emission rate for lepton pairs is also discussed.
متن کاملRole of vector mesons in high-Q2 lepton-nucleon scattering.
The possible role played by vector mesons in inclusive deep inelastic lepton-nucleon scattering is investigated. In the context of the convolution model, we calculate self-consistently the scaling contribution to the nucleon structure function using the formalism of time-ordered perturbation theory in the infinite momentum frame. Our results indicate potentially significant effects only when th...
متن کاملProton Compton Scattering and Photoproduction of Vector Mesons
Proton Compton scattering and photoproduction of vector mesons at high energies are studied in terms of the quark model. It is shown that under the vector meson dominance hypothesis the quark model gives the rP total hadronic cross section in good agreement with the experimental data. The real-to-imaginary ratio of forward proton Compton scattering is related to the total cross sections and the...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2010
ISSN: 0920-5632
DOI: 10.1016/j.nuclphysbps.2010.02.015