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Mesonic and binding contributions to the EMC effect in a relativistic many-body approach

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Mesonic and binding contributions to the EMC effect in a relativistic many-body approach

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Marco Rubio, Eugenio; Oset Báguena, Eulogio; Fernández de Córdoba, Pedro

Aquest document és un/a article, creat/da en: 1996

We revise the conventional nuclear effects of Fermi motion, binding and pionic effects in deep inelastic lepton scattering using a relativistic formalism for an interacting Fermi sea and the local density approximation to translate results from nuclear matter to finite nuclei. In addition we also consider effects from rho-meson renormalization in the nucleus. The use of nucleon Green's functions in terms of their spectral functions offers a precise way to account for Fermi motion and binding. On the other hand the use of many body Feynman diagrams in a relativistic framework allows one to avoid using prescriptions given in the past to introduce relativistic corrections in a non relativistic formalism. We show that with realistic nucleon spectral functions and meson nucleus selfenergies one can get a reasonable description of the EMC effect for x > 0.15, outside the shadowing region.

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