EPJ Web Conf.
Volume 137, 2017XIIth Quark Confinement and the Hadron Spectrum
|Number of page(s)||4|
|Section||Section C: Heavy Quarks|
|Published online||22 March 2017|
String point of view for heavy-light mesons*
1 Institute of High Energy Physics, CAS, Beijing 100049, People’s Republic of China
2 Theoretical Physics Center for Science Facilities (TPCSF), CAS, People’s Republic of China
3 Tokyo Kasei University, 1-18-1 Kaga, Itabashi, Tokyo 173-8602, Japan
4 Theoretical Research Division, Nishina Center, RIKEN, Wako, Saitama 351-0198, Japan
Published online: 22 March 2017
An approximate rotational symmetry of a heavy-light meson is viewed from a string picture. Using a simple string configuration, we derive a formula, (M–mc)2 = πσL, whose coeffcient of the r.h.s. is just 1/2 of that of a light meson with two light quarks. A numerical plot is obtained for D mesons of experimental data as well as several theoretical models, which shows good agreement with this formula.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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