@misc{10481/107491,
year = {2025},
month = {10},
url = {https://hdl.handle.net/10481/107491},
abstract = {We present methods to achieve NLL+NLO accurate parton showering for processes with two coloured legs: neutral- and charged-current Drell-Yan, and Higgs production
in pp collisions, as well as DIS and e
+e
− to jets. The methods include adaptations of existing
approaches, as well as a new NLO matching scheme, ESME, that is positive-defnite by
construction. Our implementations of the methods within the PanScales framework yield
highly competitive NLO event generation speeds. We validate the fxed-order and combined
resummation accuracy with tests in the limit of small QCD coupling and briefy touch on
phenomenological comparisons to standard NLO results and to Drell-Yan data. The progress
reported here is an essential step towards showers with logarithmic accuracy beyond NLL
for processes with incoming hadrons.},
organization = {Royal Society (Research Professorship RP R1 231001)},
organization = {European Research Council (ERC, Grant 788223, PanScales)},
organization = {Science and Technology Facilities Council (STFC, Grant ST/X000761/1)},
organization = {Dutch Research Council (NWO, Project VI.Veni.232.190)},
organization = {Australian Research Council (Discovery Project DP230103014)},
organization = {Australian Research Council (Discovery Early Career Researcher Award DE230100867)},
organization = {Ramón y Cajal program (Grant RYC2022-037846-I)},
organization = {Kavli Institute for Theoretical Physics (KITP, Grant NSF PHY-2309135)},
publisher = {Springer Nature},
keywords = {Higher-Order Perturbative Calculations},
keywords = {Parton Shower},
keywords = {Resummation},
title = {Logarithmically-accurate and positive-defnite NLO shower matching},
doi = {10.1007/JHEP10(2025)038},
author = {van Beekveld, Melissa and Ferrario Ravasio, Silvia and Helliwell, Jack and Karlberg, Alexander and Scyboz, Ludovic and Soto-Ontoso, Alba and Soyez, Gregory and Zanoli, Silvia},
}