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Pentaquark $Θ^+$ mass and width in dense matter

Hyun-Chul Kim·Chang-Hwan Lee·Hee-Jung Lee
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Abstract

We investigate medium modifications of the pentaquark $Θ^+$ in dense medium, taking into account different parities of the exotic $Θ^+$ baryon. We find that the chemical potential of the $Θ^+$ is shifted in a density-dependent way to one-loop order. We also investigated the effect of the scaled nucleon mass in dense medium on the $Θ^+$ propagator. The results turn out to depend sensitively on the scaled nucleon mass and on the parity of the $Θ^+$.

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Hyun-Chul Kim, Chang-Hwan Lee, Hee-Jung Lee. 2005-03-11. Pentaquark $Θ^+$ mass and width in dense matter. https://arxiv.org/abs/hep-ph/0402141

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