Transport analysis of in-medium hadron effects in pA and AA collisions

Details Transport analysis of in-medium hadron effects in pA and AA collisions Transport analysis of in-medium hadron effects in pA and AA collisions

2002-09-24

arxiv.org/abs/nucl-th/0209077v1

Physics

Nuclear Physics

Nuclear Theory

3 pages, LaTeX, 3 postscript figures; contribution to QNP2002, Juelich, June 10-14, 2002

Scientific paper

10.1140/epja/i2002-10261-y

The production and decay of vector mesons ($\rho, \omega$) in pA and AA reactions is studied with particular emphasis on their in-medium spectral functions. It is explored within transport calculations if hadronic in-medium decays like $\pi^+\pi^-$ or $\pi^0 \gamma$ might provide complementary information to their dilepton ($e^+e^-$) decays. Whereas the $\pi^+ \pi^-$ signal from the $\rho$-meson is found to be strongly distorted by pion rescattering, the $\omega$-meson Dalitz decay to $\pi^0 \gamma$ appears promising even for more heavy nuclei in $\gamma A$ and pA reactions. Furthermore, the influence of nucleon and kaon/antikaon potentials on the $K^\pm$ yields and spectra in pA collisions is calculated and compared to the recent data from the ANKE Collaboration.

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