Knowledge Management System of Institute of Theoretical Physics, CAS
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
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| Hadron scattering in an asymmetric box | |
| Source Publication | JOURNAL OF HIGH ENERGY PHYSICS
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| Keyword | Quantum-field Theories Chiral Perturbation-theory Clover Wilson Action Anisotropic Lattices Volume Dependence Glueball Spectrum Energy-spectrum Particle States Quark Length |
| Abstract | 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 | |
| ISSN | 1126-6708 |
| Issue | 6Pages:- |
| Subject Area | Physics |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/5728 |
| Collection | SCI期刊论文 |
| Corresponding Author | Li, X , Peking Univ, Sch Phys, Beijing 100871, Peoples R China |
| Recommended Citation 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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