arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2207.07718hep-ph
收藏

同位旋矢量介子质量来自QCD求和规则

Isovector Meson Masses from QCD Sum Rules

Nasrallah F. Nasrallah, Karl Schilcher

AI总结:

本文提出一种新的有限能量QCD求和规则方法,通过优化积分核计算同位旋矢量介子质量,结果在广泛半径范围内稳定且与实验值一致,验证了QCD对单共振态的描述能力。

摘要:

我们提出了一种利用有限能量QCD求和规则的新方法,计算同位旋矢量介子(包括矢量、标量和赝标量介子及其已确认的激发态)的质量。该方法基于选择适当的积分核,以最小化在复能量(平方)平面上沿割线发生的积分。我们在广泛的积分轮廓半径R范围内获得了非常稳定的结果。求和规则的预测在预期精度内与实验值一致,表明QCD能够描述单个共振态。

英文摘要:

We present a calculation of the masses of the isovector mesons ( vector, scalar and pseudoscalar including the established recurrences) using a new method of finite energy QCD sum rules. The method is based on the idea of choosing a suitable integration kernel which minimizes the occurring integral over the cut in the complex energy (squared) plane. We obtain remarkably stable results in a wide range R, where R is the radius of the integration contour. The sum rule predictions agree with the experimental values within the expected accuracy showing that QCD describes single resonances.

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。

↑