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Sudakov double logs in single-inclusive hadron production in DIS at small $x$ from the Color Glass Condensate formalism
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abstract
We investigate the high $Q^2$ (photon virtuality) limit of single-inclusive hadron production in DIS (SIDIS) at small $x$, using the color glass condensate formalism at next-to-leading order. We focus on the $\Lambda_{QCD}^2 \ll \mathbf{p}_h^2 \ll Q^2$ kinematic regime where $\mathbf{p}_h$ is the produced hadron transverse momentum, and extract the Sudakov double logarithms. We further argue that compatibility between the CGC calculation and TMD factorization at one-loop order can only be achieved if the small-x evolution is kinematically constrained.
Forward citations
Cited by 6 Pith papers
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Gluonic nucleon energy correlators and fracture functions for Color Glass Condensate
Gluonic nucleon energy correlators in the CGC reduce at eikonal accuracy to the unpolarized and linearly polarized gluon components, both given by the adjoint dipole S-matrix, and the linearly polarized one drives a s...
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Forward trijet production in proton-nucleus collisions: gluon initiated channel
The gluon-initiated trijet channel in forward pA collisions is calculated at leading order in CGC, revealing a four-gluon vertex structure matching instantaneous terms and showing how rapidity and collinear divergence...
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SIDIS at small $x$ at next-to-leading order: transverse photon
The NLO single-inclusive hadron cross-section for transverse photon exchange in small-x DIS is derived in the CGC at finite Nc, with collinear divergences absorbed into DGLAP evolution and rapidity divergences into BK...
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Forward parton-nucleus scattering at next-to-eikonal accuracy in the CGC
Full next-to-eikonal quark and gluon propagators in a dynamical gluon background are derived, and forward quark and gluon production cross sections are computed for quark-nucleus and gluon-nucleus scattering.
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One-loop renormalization of quark TMD in the light-cone gauge: CSS evolution
One-loop renormalization of the quark TMD in the target light-cone gauge with the Mandelstam-Leibbrandt prescription reproduces the CSS evolution equations, with the double log traced to the ML zero-mode in diagrams e...
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Effective theories for nuclei at high energies
This paper reviews the Color Glass Condensate effective theory, covering its foundations, its role in deep inelastic scattering, and its use in setting initial conditions for heavy-ion collisions.
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