Holographic heavy quark symmetry

• Published in: The journal of high energy physics Vol. 2015; no. 6; pp. 1 - 29
• Main Authors: Hashimoto, Koji, Ogawa, Noriaki, Yamaguchi, Yasuhiro
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.06.2015; Springer Nature B.V
• Subjects: Classical and Quantum Gravitation; Elementary Particles; Excitation spectra; Flavours; Gravitation; High energy physics; Mathematical analysis; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Quarks; Regular Article - Theoretical Physics; Relativity Theory; Spectra; String Theory; Symmetry; Vectors (mathematics); Gauge-gravity correspondence; Heavy Quark Physics; QCD
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP06(2015)040

A bstract We investigate the heavy quark spin symmetry, i.e. the mass degeneracy of pseudo-scalar and vector quarkonia at heavy quark limit, by using the gauge/gravity correspondence. We allow generic D3-like geometry with a flavor D7-brane, to avoid supersymmetric mass degeneracy. For geometries admitting physical QCD-like properties, we find that the mass degeneracy is generically achieved in a good accuracy, up to a few percent mass splitting. We also compute spectra of excited quarkonia states, and discuss comparisons with experiments and quark-model calculations.