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arXiv 1505.04099hep-phhep-lat
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X(3872)的binding energy的有限体积修正

Finite volume corrections to the binding energy of the X(3872)

M. Jansen, H. -W. Hammer, Yu Jia

摘要:

强子的夸克质量依赖性是晶格计算的重要输入。在X(3872)微扰π介子的有效场论中,研究了X(3872)在有限盒次领先阶中结合能对轻夸克质量的依赖性.在这个量级上,夸克质量依赖性除了由一π交换决定外,还由夸克质量依赖性接触相互作用决定。虽然在高达其物理值两倍的区域内,对轻夸克质量只有中等的敏感性,但在盒长为20 fm时,有限体积效应已经很显著。

英文摘要:

The quark mass dependence of hadrons is an important input for lattice calculations. We investigate the light quark mass dependence of the binding energy of the X(3872) in a finite box to next-to-leading order in an effective field theory for the X(3872) with perturbative pions (XEFT). At this order, the quark mass dependence is determined by a quark mass-dependent contact interaction in addition to the one-pion exchange. While there is only a moderate sensitivity to the light quark masses in the region up to twice their physical value, the finite volume effects are significant already at box length as large as 20 fm.

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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