Nucleon Energy Correlators for the Color Glass Condensate

Abstract

We demonstrate the recently proposed nucleon energy-energy correlator (nucleon EEC) $f_{\mathrm{EEC}}(x,\theta )$ 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.

7+3pages, 5+1 figures, to match with the published version

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• Quantum Computing for Energy Correlators
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• Effective Field Theory Factorization for Diffraction
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