Pentaquarks, Skyrmions and the Vector Manifestation of Chiral Symmetry
Abstract
Description
The structure of the pentaquark baryon $Θ^+$ is discussed in terms of a $K^+$-skyrmion binding where the skyrmion arises as a soliton in hidden local symmetry approach to low-energy hadronic physics which may be considered as a holographic dual to QCD. The "vector manifestation" of chiral symmetry encoded in the effective theory Wilsonian-matched to QCD is proposed to play an important role in the binding. Among the options available for understanding the pentaquark structure is the intriguing possibility that the $Θ^+$ is a Feshbach resonance generated by the solitonic matter that drives the Wess-Zumino term that in the presence of $K^\star$ acts like a magnetic field.
10 pages, 2 figures. Based on talks given at the Hanyang-KIAS Workshop on Multifaceted Skyrmions and Effective Field Theory, KIAS, Seoul, Korea, 25-27 October 2004 and at the International Workshop on Dynamical Symmetry Breaking, Nagoya University, Nagoya, Japan, 21-22 December 2004
10 pages, 2 figures. Based on talks given at the Hanyang-KIAS Workshop on Multifaceted Skyrmions and Effective Field Theory, KIAS, Seoul, Korea, 25-27 October 2004 and at the International Workshop on Dynamical Symmetry Breaking, Nagoya University, Nagoya, Japan, 21-22 December 2004