Pentaquark Θ⁺ mass and width in dense matter

2004/02/29 by Hyun-Chul Kim, Chang-Hwan Lee, Hee-Jung Lee
Physics and Astronomy · #hep-ph

paper · pdf

published as J.Korean Phys.Soc. 46 (2005) 393-396 · 7 pages, 3 figures. Final version published in J. of. Kor. Phys. Soc

arxiv created 2005/03/11 · arxiv updated 2009/12/01

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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