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  1. Article

    Open Access

    Transverse momentum-dependent heavy-quark fragmentation at next-to-leading order

    The transverse momentum-dependent fragmentation functions (TMD FFs) of heavy (bottom and charm) quarks, which we recently introduced, are universal building blocks that enter predictions for a large number of ...

    Rebecca von Kuk, Johannes K. L. Michel, Zhiquan Sun in Journal of High Energy Physics (2024)

  2. Article

    Open Access

    Renormalons in the energy-energy correlator

    The energy-energy correlator (EEC) is an observable of wide interest for collider physics and Standard Model measurements, due to both its simple theoretical description in terms of the energy-momentum tensor ...

    Stella T. Schindler, Iain W. Stewart, Zhiquan Sun in Journal of High Energy Physics (2023)

  3. Article

    Open Access

    Transverse momentum distributions of heavy hadrons and polarized heavy quarks

    We initiate the study of transverse momentum-dependent (TMD) fragmentation functions for heavy quarks, demonstrate their factorization in terms of novel nonperturbative matrix elements in heavy-quark effective...

    Rebecca von Kuk, Johannes K. L. Michel, Zhiquan Sun in Journal of High Energy Physics (2023)

  4. Article

    Open Access

    Disentangling long and short distances in momentum-space TMDs

    The extraction of nonperturbative TMD physics is made challenging by prescriptions that shield the Landau pole, which entangle long- and short-distance contributions in momentum space. The use of different pre...

    Markus A. Ebert, Johannes K. L. Michel, Iain W. Stewart in Journal of High Energy Physics (2022)

  5. Article

    Open Access

    Pharmacokinetic model of unfractionated heparin during and after cardiopulmonary bypass in cardiac surgery

    Unfractionated heparin (UFH) is widely used as a reversible anti-coagulant in cardiopulmonary bypass (CPB). However, the pharmacokinetic characteristics of UFH in CPB surgeries remain unknown because of the la...

    Zaishen Jia, Ganzhong Tian, Yupeng Ren, Zhiquan Sun in Journal of Translational Medicine (2015)