The sigma meson in a nuclear medium through two pion photoproduction
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The sigma meson in a nuclear medium through two pion photoproduction

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The sigma meson in a nuclear medium through two pion photoproduction

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Roca Zamora, Luis; Oset Báguena, Eulogio Perfil; Vicente Vacas, Manuel José
Aquest document és un/a article, creat/da en: 2002
We present theoretical results for (gamma, pi(0)pi(0)) production on nucleons and nuclei in the kinematical region where the scalar isoscalar pipi amplitude is influenced by the a pole. The final-state interaction of the pions modified by the nuclear medium produces a spectacular shift of strength of the two pion invariant mass distribution induced by the moving of the sigma pole to lower masses and widths as the nuclear density increases.

    Roca, L. Oset Báguena, Eulogio Vicente Vacas, Manuel José 2002 The sigma meson in a nuclear medium through two pion photoproduction Physics Letters B 541 1-2 77 86
http://dx.doi.org/10.1016/S0370-2693(02)02188-3
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