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Low-energy D*(+)(D)over-bar(1)(0) scattering and the resonancelike structure Z(+)(4430)
CLQCD collaboration
2009
发表期刊PHYSICAL REVIEW D
卷号80期号:3
通讯作者Meng, GZ (reprint author), Peking Univ, Sch Phys, Beijing 100871, Peoples R China.
摘要Low-energy scattering of D*(+) and (D) over bar (0)(1) meson are studied using quenched lattice QCD with improved lattice actions on anisotropic lattices. The calculation is performed within Luscher's finite-size formalism, which establishes the relation between the scattering phase in the infinite volume and the exact energy level in the finite volume. The threshold scattering parameters, namely, the scattering length a(0) and the effective range r(0), for the s-wave scattering in J(P) = 0(-) channel are extracted. After the chiral and continuum extrapolations, we obtain: a(0) = 2.52(47) fm and r(0) = 0.7(1) fm where the errors are purely statistical. Based on these results, we discuss the possibility of a shallow bound state for the two charmed mesons within the nonrelativistic potential scattering model. It is argued that, albeit the interaction between the two charmed mesons being attractive, it is unlikely that they can form a shallow bound state in this channel. This calculation provides some useful information on the nature of the newly discovered resonancelike structure Z(+)(4430) by the Belle Collaboration.
关键词QUANTUM-FIELD THEORIES ANISOTROPIC LATTICES VOLUME DEPENDENCE PARTICLE STATES SPECTRUM MATRIX
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.80.034503
收录类别SCI
语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000269641100060
引用统计
被引频次:26[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/212906
专题理论物理室
作者单位中国科学院高能物理研究所
推荐引用方式
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CLQCD collaboration. Low-energy D*(+)(D)over-bar(1)(0) scattering and the resonancelike structure Z(+)(4430)[J]. PHYSICAL REVIEW D,2009,80(3).
APA CLQCD collaboration.(2009).Low-energy D*(+)(D)over-bar(1)(0) scattering and the resonancelike structure Z(+)(4430).PHYSICAL REVIEW D,80(3).
MLA CLQCD collaboration."Low-energy D*(+)(D)over-bar(1)(0) scattering and the resonancelike structure Z(+)(4430)".PHYSICAL REVIEW D 80.3(2009).
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