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Li, Xin; Chen, Ying; Meng, Guo-Zhan; Feng, Xu; Gong, Ming; He, Song; Li, Gang; Liu, Chuan; Liu, Yu-Bin; Ma, Jian-Ping; Meng, Xiang-Fei; Shen, Yan; Zhang, Jian-Bo; Li, X , Peking Univ, Sch Phys, Beijing 100871, Peoples R China
Hadron scattering in an asymmetric box
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
关键词Quantum-field Theories Chiral Perturbation-theory Clover Wilson Action Anisotropic Lattices Volume Dependence Glueball Spectrum Energy-spectrum Particle States Quark Length
摘要We propose to study hadron-hadron scattering using lattice QCD in an asymmetric box which allows one to access more non-degenerate low-momentum modes for a given volume. The conventional Luscher's formula applicable in a symmetric box is modified accordingly. To illustrate the feasibility of this approach, pion-pion elastic scattering phase shifts in the I = 2, J = 0 channel are calculated within quenched approximation using improved gauge and Wilson fermion actions on anisotropic lattices in an asymmetric box. After the chiral and continuum extrapolation, we find that our quenched results for the scattering phase shifts in this channel are consistent with the experimental data when the three-momentum of the pion is below 300MeV. Agreement is also found when compared with previous theoretical results from lattice and other means. Moreover, with the usage of asymmetric volume, we are able to compute the scattering phases in the low-momentum range (pion three momentum less than about 350MeV in the center of mass frame) for over a dozen values of the pion three-momenta, much more than using the conventional symmetric box with comparable volume.
2007
ISSN1126-6708
期号6页码:-
学科领域Physics
收录类别SCI
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被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5728
专题理论物理所科研产出_SCI论文
通讯作者Li, X , Peking Univ, Sch Phys, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714
Li, Xin,Chen, Ying,Meng, Guo-Zhan,et al. Hadron scattering in an asymmetric box[J]. JOURNAL OF HIGH ENERGY PHYSICS,2007(6):-.
APA Li, Xin.,Chen, Ying.,Meng, Guo-Zhan.,Feng, Xu.,Gong, Ming.,...&Li, X , Peking Univ, Sch Phys, Beijing 100871, Peoples R China.(2007).Hadron scattering in an asymmetric box.JOURNAL OF HIGH ENERGY PHYSICS(6),-.
MLA Li, Xin,et al."Hadron scattering in an asymmetric box".JOURNAL OF HIGH ENERGY PHYSICS .6(2007):-.
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