The authors extend the parton-branching TMD approach with CCFM-style non-Sudakov form factors, showing that including small-x dynamics raises the small-x gluon density above the DGLAP result.
Determination of transverse momentum dependent gluon density from HERA structure function measurements
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abstract
The transverse momentum dependent gluon density obtained with CCFM evolution is determined from a fit to the latest combined HERA structure function measurements.
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2019 1verdicts
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Extending parton branching TMDs to small $x$
The authors extend the parton-branching TMD approach with CCFM-style non-Sudakov form factors, showing that including small-x dynamics raises the small-x gluon density above the DGLAP result.