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arXiv · 0711.1194

On $pp \to p K Λ, N K Σ, pp ϕ$ -- the basic ingredients for strangeness production in heavy ion collisions

Bing-Song Zou·Ju-Jun Xie
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Abstract

The strangeness production in heavy ion collisions was proposed to be probes of the nuclear equation of state, Kaon potential in nuclear medium, strange quark matter and quark-gluon plasma, etc. However, to act as reliable probes, proper understanding of the basic ingredients for the strangeness production, such as $pp \to pK^+Λ$, $pp \to pp ϕ$ and $pp \to nK^+Σ^+$ is necessary. Recent study of these reactions clearly shows that previously ignored contributions from the spin-parity $1/2^-$ resonances, $N^*(1535)$ and $Δ^*(1620)$, are in fact very important for these reactions, especially for near-threshold energies. It is necessary to include these contributions for getting reliable calculation for the strangeness production in heavy ion collisions.

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Bing-Song Zou, Ju-Jun Xie. 2007-11-08. On $pp \to p K Λ, N K Σ, pp ϕ$ -- the basic ingredients for strangeness production in heavy ion collisions. https://doi.org/10.1142/s0218301308010751

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