New predictions on the mass of the 1−+ light hybrid meson from QCD sum rules
New predictions on the mass of the 1−+ light hybrid meson from QCD sum rules
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根据 QCD 和规则对 1−+ 轻杂化介子质量的新预测
DOI：
10.1007/jhep04(2015)004
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发表时间：
2015
影响因子：
5.4
通讯作者：
Zhu
中科院分区：
文献类型：
--
作者：
Zhuo;Hong;Zhu
本文计算了1−+光混合流的流-流关联器中8维夸克和胶子凝聚的系数。通过引入这些高次幂修正并更新输入参数，我们从基于蒙特-卡罗的QCD求和规则重新分析了1−+轻混合介子的质量。考虑到高维凝聚体的因子分解可能的破坏和的变化< g 3 G 3>，我们得到了一个保守的质量范围1.72-2.60 GeV，这有利于π 1（2015）作为一个更好的混合候选人相比，π 1（1600）和π 1（1400）。
We calculate the coefficients of the dimension-8 quark and gluon condensates in the current-current correlator of 1−+ light hybrid current. With inclusion of these higher-power corrections and updating the input parameters, we re-analyze the mass of the 1−+ light hybrid meson from Monte-Carlo based QCD sum rules. Considering the possible violation of factorization of higher dimensional condensates and variation of< g 3 G 3>, we obtain a conservative mass range 1.72-2.60 GeV, which favors π 1 (2015) as a better hybrid candidate compared with π 1 (1600) and π 1 (1400).