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arXiv · hep-ph/0410145

Effective Theory Approach to the Skyrme model and Application to Pentaquarks

Koji Harada·Yohei Mitsunari·Nao-aki Yamashita
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Abstract

The Skyrme model is reconsidered from an effective theory point of view. From the most general chiral Lagrangian up to including terms of order $p^4$, $N_c$ and $δm^2$ ($δm\equiv m_s-m$), new interactions, which have never been considered before, appear upon collective coordinate quantization. We obtain the parameter set best fitted to the observed low-lying baryon masses, by performing the second order perturbative calculations with respect to $δm$. We calculate the masses and the decay widths of the other members of (mainly) anti-decuplet pentaquark states. The formula for the decay widths is reconsidered and its baryon mass dependence is clarified.

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Koji Harada, Yohei Mitsunari, Nao-aki Yamashita. 2005-02-01. Effective Theory Approach to the Skyrme model and Application to Pentaquarks. https://doi.org/10.1143/ptp.113.1315

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