Study of X(3872) from Effective Field Theory with Pion-Exchange Interaction

	Study of X(3872) from Effective Field Theory with Pion-Exchange Interaction
	王平(理); 王轩弓;Wang, P; Wang, XG
刊名	PHYSICAL REVIEW LETTERS
	2013
卷号	111 期号:4 页码:42002
英文摘要	We study D (D) over bar* (D(D) over bar) scattering in the framework of unitarized heavy meson chiral perturbation theory with pion exchange and a contact interaction. S-3(1) - D-3(1) mixing effects are taken into account. A loosely bound state X(3872), with the pole position being M-pole = (3871.70 - i0.39) MeV, is found. The result is not sensitive to the strength of the contact interaction. Our calculation provides a theoretical confirmation of the existence of the 1(++) state X(3872). The light quark mass dependence of the pole position indicates it has a predominately D (D) over bar (D*(D) over bar) molecular nature. When the pi mass is larger than 142 MeV, the pole disappears, which makes impossible the lattice simulation of this state at large quark mass.
学科主题	Physics
收录类别	SCI
WOS记录号	WOS:000322218000004
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224543]
专题	高能物理研究所_理论物理室
推荐引用方式 GB/T 7714	Wang P,王轩弓；Wang, P,Wang, XG. Study of X(3872) from Effective Field Theory with Pion-Exchange Interaction[J]. PHYSICAL REVIEW LETTERS,2013,111(4):42002.
APA	王平,王轩弓；Wang, P,&Wang, XG.(2013).Study of X(3872) from Effective Field Theory with Pion-Exchange Interaction.PHYSICAL REVIEW LETTERS,111(4),42002.
MLA	王平,et al."Study of X(3872) from Effective Field Theory with Pion-Exchange Interaction".PHYSICAL REVIEW LETTERS 111.4(2013):42002.