Skyrmions and pentaquarks in the quark-hadron continuity perspective

Details Skyrmions and pentaquarks in the quark-hadron continuity perspective Skyrmions and pentaquarks in the quark-hadron continuity perspective

2004-06-02

arxiv.org/abs/hep-ph/0406030v2

Phys.Lett. B602 (2004) 205-211

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, LaTex. 2 figures. Final version for Physics Letters B

Scientific paper

10.1016/j.physletb.2004.10.010

We argue that in the color-flavor-locking (CFL) superconducting phase classical soliton solutions can exist, whose excitations should be interpreted as states formed by a quark (or an antiquark) and condensed diquarks. This finding extends the picture of quark-hadron-continuity showing the existence of a region, intermediate between the CFL and the hypernuclear phase, where chiral solitons and Nambu Goldstone bosons can exist. We derive an expression of the soliton mass in terms of the QCD coupling, $g_s$, and the Nambu Goldstone boson parameters. From the quark-hadron continuity we can draw an argument in favor of the interpretation of the $\Theta^+(1540)$ particle in terms of a strange antiquark and two highly correlated $ud$ pairs (diquarks).

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