Mesonic and binding contributions to the nuclear Drell-Yan process
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Mesonic and binding contributions to the nuclear Drell-Yan process

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Mesonic and binding contributions to the nuclear Drell-Yan process

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Marco Rubio, Eugenio; Oset Báguena, Eulogio Perfil
Aquest document és un/a article, creat/da en: 1999
We have evaluated the Drell-Yan cross section in nuclei paying special attention to the meson cloud contribution from pion and rho-meson, for which an accurate calculation using the meson nuclear spectral functions is used. Similarly, the nucleonic contribution is evaluated in terms of a relativistic nucleon spectral function. Fair agreement with experiment is found for different nuclei and the results show a sizeable contribution from the renormalized meson cloud. In order to reproduce the experiment a novel element is introduced, consisting of a gradual energy loss of the incoming proton in its pass through the nucleus which produces a strong A dependence at x_1 large.

    Marco Rubio, Eugenio Oset Báguena, Eulogio 1999 Mesonic and binding contributions to the nuclear Drell-Yan process Nuclear Physics A 645 2 303 313
http://dx.doi.org/10.1016/S0375-9474(98)00607-1
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