Mesons as Open Strings in a Holographic Dual of QCD(Particles and Fields)
スポンサーリンク
概要
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We study meson spectrum obtained from massive open string modes in a holographic dual of QCD constructed on the basis of a D4/D8-brane configuration in type IIA string theory. The spectrum includes mesons with spin higher than one. Taking into account the effect of curved background perturbatively, we obtain a mass formula for these mesons. The mass formula exhibits the linear Regge behavior at the leading order with subleading non-linear corrections. We argue that the string spectrum captures some features of the observed meson spectrum. For example, a_2(1320), b_1(1235), π(1300), a_0(1450), etc., are identified as the first excited massive open string states and ρ_3(1690), π_2(1670), etc., are identified as the second excited states.
- 2010-08-25
著者
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IMOTO Toshiya
Daiwa Securities Capital Markets Co. Ltd.
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SAKAI Tadakatsu
Department of Physics, Nagoya University
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SUGIMOTO Shigeki
Institute for the Physics and Mathematics of the Universe, The University of Tokyo
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Sakai Tadakatsu
Department Of Physics Nagoya University
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Sakai Tadakatsu
Department Of Physics Faculty Of Sciences Ibaraki University
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Sakai Tadakatsu
Department Of Mathematical Sciences Faculty Of Sciences Ibaraki University
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Sugimoto Shigeki
Institute For The Physics And Mathematics Of The Universe The University Of Tokyo
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Sakai Tadakatsu
Department of Physics, Nagoya University:Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University
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SAKAI Tadakatsu
Department of Physics, Faculty of Sciences, Ibaraki University
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SAKAI Tadakatsu
Department of Physics, Ibaraki University
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