van Beekveld, Melissa;
Ferrario Ravasio, Silvia;
Hamilton, Keith;
Salam, Gavin;
Soto-Ontoso, Alba;
Soyez, Gregory;
Verheyen, Rob;
(2022)
PanScales showers for hadron collisions: all-order validation.
The Journal of High Energy Physics
, 2022
(11)
, Article 20. 10.1007/JHEP11(2022)020.
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Abstract
We carry out extensive tests of the next-to-leading logarithmic (NLL) accuracy of the PanScales parton showers, as introduced recently for colour-singlet production in hadron collisions. The tests include comparisons to (semi-)analytic NLL calculations of a wide range of hadron-collider observables: the colour-singlet boson transverse momentum distribution; global and non-global hadronic energy flow variables related to jet vetoes and analogues of jettiness distributions; (sub)jet multiplicities; and observables sensitive to the DGLAP evolution of the incoming momentum fractions. In the tests, we also include an implementation of a standard transverse-momentum ordered dipole shower, to establish the size of missing NLL effects in such showers, which, depending on the observable, can reach 100%. This paper, together with arXiv:2205.02237, constitutes the first step towards process-independent NLL-accurate parton showers for hadronic collisions.
| Type: | Article |
|---|---|
| Title: | PanScales showers for hadron collisions: all-order validation |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/JHEP11(2022)020 |
| Publisher version: | https://doi.org/10.1007/JHEP11(2022)020 |
| Language: | English |
| Additional information: | Open Access: This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10157333 |
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