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arXiv 1004.4235hep-lathep-ph
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静态光介子谱的连续极限

The continuum limit of the static-light meson spectrum

ETM Collaboration, Chris Michael, Andrea Shindler, Marc Wagner

摘要:

本文利用具有N_f = 2动力学夸克味的Wilson扭曲质量格点量子色动力学研究了低位静态轻介子谱的连续极限。我们考虑三个值的晶格间距a ~ 0.051 fm,0.064 fm,0.080 fm和各种值的π介子质量范围内280 MeV < m_PS < 640 MeV。本文给出了轻云角动量j = 1/2,3/2,5/2和宇称P = +,-的连续极限的结果。我们将所得结果外推到物理夸克质量,对B和B_s介子的能谱作了预测,并与已有的实验结果作了比较。

英文摘要:

We investigate the continuum limit of the low lying static-light meson spectrum using Wilson twisted mass lattice QCD with N_f = 2 dynamical quark flavours. We consider three values of the lattice spacing a ~ 0.051 fm, 0.064 fm, 0.080 fm and various values of the pion mass in the range 280 MeV < m_PS < 640 MeV. We present results in the continuum limit for light cloud angular momentum j = 1/2, 3/2, 5/2 and for parity P = +, -. We extrapolate our results to physical quark masses, make predictions regarding the spectrum of B and B_s mesons and compare with available experimental results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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