The Shape of Mesons in Holographic QCD

Details The Shape of Mesons in Holographic QCD The Shape of Mesons in Holographic QCD

2008-11-07

arxiv.org/abs/0811.1181v2

Phys.Rev.D80:087901,2009

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, v2: improved PRD version, 10pp

Scientific paper

10.1103/PhysRevD.80.087901

Based on the expectation that constituent quark model may capture right physics in the large N limit, we point out that orbital angular momentum of the quark-antiquark pair inside light mesons of low spins in the constituent quark model may provide a clue for the holographic dual string model of large N QCD. Our discussion, relying on a few suggestive assumptions, leads to a necessity of world-sheet fermions in the bulk of dual strings that can incorporate intrinsic spins of fundamental QCD degrees of freedom. We also comment on an interesting issue of the size of mesons in the context of holographic QCD.

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