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P-Wave Polarization of the $rho$-Meson and the Dilepton Spectrum in Dense Matter

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 نشر من قبل Bengt Friman
 تاريخ النشر 1997
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 تأليف Bengt Friman




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We study the $p$-wave polarization operator of the $rho$-meson due to $rho N$ interactions via the $N^*$ (1720) and $Delta (1905)$ resonances and compute the corresponding production rate for $e^+e^-$-pairs at finite temperature and baryon density. At high baryon density we find a significant shift of the spectrum to lower invariant masses.

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