Gauge-invariant decomposition of nucleon spin

Gauge-invariant decomposition of nucleon spin
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DOI:
10.1103/physrevlett.78.610
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发表时间:
1997-01-27
影响因子:
8.6
通讯作者:
Ji, XD
Ji, XD
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Ji, XD

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我介绍了一个规范不变的核子自旋到夸克螺旋度,夸克轨道和胶子贡献的分解。总夸克(因此夸克轨道)的贡献是可测量的,通过虚康普顿散射在一个特殊的运动区域,其中单夸克散射占主导地位。这种深虚康普顿散射对于揭开核子的夸克和胶子结构具有很大的潜力。
I introduce a gauge-invariant decomposition of the nucleon spin into quark helicity, quark orbital, and gluon contributions. The total quark (and hence the quark orbital) contribution is shown to be measurable through virtual Compton scattering in a special kinematic region where single quark scattering dominates. This deeply virtual Compton scattering has much potential to unravel the quark and gluon structure of the nucleon.