Low Transverse Momentum Heavy Quark Pair Production to Probe Gluon Tomography

Abstract

We derive the transverse momentum dependent (TMD) factorization for heavy quark pair production in deep inelastic scattering, where the total transverse momentum is much smaller than the invariant mass of the pair. The factorization is demonstrated at one-loop order, in both Ji-Ma-Yuan and Collins-11 schemes for the TMD definitions, and the hard factors are calculated accordingly. Our result provides a solid theoretical foundation for the phenomenological investigations of the gluon TMDs in this process, and can be extended to other similar hard processes, including dijet (di-hadron) production in DIS.

9 pages, 2 figures

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• kt-factorization for Hard Processes in Nuclei
• Direct Probes of Linearly Polarized Gluons inside Unpolarized Hadrons
• Transverse-momentum resummation for top-quark pairs at hadron colliders
• Top quark pair production at small transverse momentum in hadronic collisions
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• Back-to-back heavy quark pair production in Semi-inclusive DIS
• Transverse Momentum Dependent (Un)polarized Gluon Distributions in Higgs Production