Energy dependence of C-odd color charge correlations in the proton

15 Nov 2022, 17:30
WG4: Small-x and Diffraction WG4: Small-x and Diffraction


Adrian Dumitru (Baruch College, CUNY)


The three point light-cone correlation function of color charge densities is evaluated in light-cone gauge. The proton is approximated as a non-perturbative 3-quark state plus perturbative corrections due to the emission of a gluon which is not required to be soft. The resulting expressions provide the C-odd contribution to the initial conditions for high-energy evolution of the dipole scattering amplitude to small x.

We also present numerical estimates for the perturbative 3-gluon exchange amplitude (hard Odderon) as a function of dipole size, impact parameter, their relative azimuthal angle, and light-cone momentum cutoff x. We find that this amplitude increases as x decreases from 0.1 to 0.01. At yet lower x, the reversal of this energy dependence would reflect the onset of universal small-x renormalization group evolution.

Primary author

Adrian Dumitru (Baruch College, CUNY)

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