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arXiv · 2301.01788

Nucleon Energy Correlators for the Color Glass Condensate

Hao-Yu Liu·Xiaohui Liu·Ji-Chen Pan·Feng Yuan·Hua Xing Zhu
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Abstract

We demonstrate the recently proposed nucleon energy-energy correlator (nucleon EEC) $f_{\rm EEC}(x,\theta)$ 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 $\theta$-distribution. We find that the saturation prediction is significantly different from the expectation of the collinear factorization.

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Hao-Yu Liu, Xiaohui Liu, Ji-Chen Pan, Feng Yuan, Hua Xing Zhu. 2023-01-04. Nucleon Energy Correlators for the Color Glass Condensate. https://doi.org/10.1103/physrevlett.130.181901

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