Article

# Dirac sea effects in $K^+$ scattering from nuclei

06/1993; DOI:10.1016/0370-2693(93)90526-N
Source: arXiv

ABSTRACT The ratio $R_T$ of $K^+-^{12}C$ to $K^+-d$ cross sections has been calculated
microscopically using a boson-exchange $KN$ amplitude in which the $\sigma$ and
$\omega$ mesons are dressed by the modifications of the Dirac sea in nuclear
matter. In spite of the fact that this dressing leads to a scaling of the
mesons effective mass in nuclear matter, the effect on the $R_T$ ratio is found
to be weak.

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### Keywords

$\omega$ mesons

boson-exchange $KN$ amplitude

Dirac sea

mesons effective mass

microscopically

nuclear matter