核子能量关联函数对于色玻璃凝聚态。

Nucleon Energy Correlators for the Color Glass Condensate.

机构信息

College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing 100029, China.

Center of Advanced Quantum Studies, Department of Physics, Beijing Normal University, Beijing 100875, China.

出版信息

Phys Rev Lett. 2023 May 5;130(18):181901. doi: 10.1103/PhysRevLett.130.181901.

DOI:10.1103/PhysRevLett.130.181901

PMID:37204899

Abstract

We demonstrate the recently proposed nucleon energy-energy correlator (NEEC) f_{EEC}(x,θ) can unveil the gluon saturation in the small-x regime in eA collisions. The novelty of this probe is that it is fully inclusive just like the deep-inelastic scattering (DIS), with no requirements of jets or hadrons but still provides an evident portal to the small-x dynamics through the shape of the θ distribution. We find that the saturation prediction is significantly different from the expectation of the collinear factorization.

摘要

我们证明了最近提出的核子能-能关联函数（NEEC）$f_{EEC}(x,\theta)$可以揭示在 eA 碰撞中小-$x$区的胶子饱和现象。这种探针的新颖之处在于它像深度非弹性散射（DIS）一样完全包容，不需要喷注或强子，但仍然通过 $\theta$分布的形状为小-$x$动力学提供了一个明显的入口。我们发现，饱和预测与共线因子化的预期有显著差异。