Manifestation of sea quark effects in the strong coupling constant in lattice QCD.

Manifestation of sea quark effects in the strong coupling constant in lattice QCD.
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海夸克效应在晶格 QCD 强耦合常数中的表现。

DOI:
10.1103/physrevlett.74.22
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发表时间:
1994
影响因子:
8.6
通讯作者:
A. Ukawa
A. Ukawa
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
S. Aoki;M. Fukugita;S. Hashimoto;N. Ishizuka;H. Mino;M. Okawa;T. Onogi;A. Ukawa

文献摘要

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我们证明,在当前完整 QCD 模拟中测量的强耦合常数中,可以清楚地看到重正化群考虑所预期的海夸克效应的大小。在此结果的基础上,使用在两种动态 Kogut-Susskind 夸克生成的完整 QCD 配置上计算的粲素 1[ital S]-1[ital P] 质量分裂来估计 α (5)/MS ([ital M][sub [ital Z]])([bar M][bar S] 表示修改后的最小减法方案),以固定尺度。
We demonstrate that sea quark effects of a magnitude expected from renormalization group considerations are clearly visible in the strong coupling constant measured in current full QCD simulations. Building on this result an estimate of [alpha] (5)/MS ([ital M][sub [ital Z]]) ([bar M][bar S] denotes the modified minimal subtraction scheme) is made employing the charmonium 1[ital S]-1[ital P] mass splitting calculated on full QCD configurations generated with two flavors of dynamical Kogut-Susskind quarks to fix the scale.