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arXiv 1602.04714hep-phhep-lat
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扩展的质量壳重整化方案中双粲重子的质量

Masses of doubly charmed baryons in the extended on-mass-shell renormalization scheme

Zhi-Feng Sun, M. J. Vicente Vacas

摘要:

本文研究了在扩展质量壳层(EOMS)重整化方案中,重粲重子到$N^2LO$的质量修正,并与重子手征微扰理论的结果进行了比较.我们发现,从重子方法的条款是一个子集的EOMS方案中获得的。通过对格点数据的拟合,我们可以从拉格朗日量中确定参数$\tilde{m}$、$α$、$c_1$和$c_7$,而在重子方法中,不能从重子质量中得到关于$c_1$的信息。相应地,在EOMS方案中,从不同的格点量子色动力学计算的粲夸克质量和π介子质量值外推计算了$m_{Ξ_{cc}}$和$m_{Ω_{cc}}$的质量。

英文摘要:

In this work, we investigate the mass corrections of the doubly charmed baryons up to $N^2LO$ in the extended-on-mass-shell (EOMS) renormalization scheme, comparing with the results of heavy baryon chiral perturbation theory. We find that the terms from the heavy baryon approach are a subset of those obtained in the EOMS scheme. By fitting the lattice data, we can determine the parameters $\tilde{m}$, $α$, $c_1$ and $c_7$ from the Lagrangian, while in the heavy baryon approach no information on $c_1$ can be obtained from the baryons mass. Correspondingly, the masses of $m_{Ξ_{cc}}$ and $m_{Ω_{cc}}$ are predicted, in the EOMS scheme, extrapolating the results from different values of the charm quark and the pion masses of the lattice QCD calculations.

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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