Power counting energy flow polynomials
| Autor: | Cal, Pedro, Thaler, Jesse, Waalewijn, Wouter |
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| Přispěvatelé: | Theoretical Particle Physics (ITFA, IoP, FNWI) |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Nuclear and High Energy Physics
showers [parton] Nuclear Theory FOS: Physical sciences energy flow High Energy Physics - Experiment parton: showers Nuclear Theory (nucl-th) quark High Energy Physics - Experiment (hep-ex) High Energy Physics - Phenomenology (hep-ph) jet [gluon] Jets and Jet Substructure gluon: jet ddc:530 structure quark gluon gluon jet High Energy Physics - Phenomenology parton showers Effective Field Theories of QCD High Energy Physics::Experiment Resummation performance |
| Zdroj: | Journal of High Energy Physics, 2022(9):21. Springer Verlag Journal of high energy physics 09(9), 021 (2022). doi:10.1007/JHEP09(2022)021 Journal of High Energy Physics |
| ISSN: | 1029-8479 1126-6708 |
| DOI: | 10.3204/PUBDB-2022-02525 |
| Popis: | Journal of high energy physics 09(9), 021 (2022). doi:10.1007/JHEP09(2022)021 Power counting is a systematic strategy for organizing collider observables and their associated theoretical calculations. In this paper, we use power counting to characterize a class of jet substructure observables called energy flow polynomials (EFPs). EFPs provide an overcomplete linear basis for infrared-and-collinear safe jet observables, but it is known that in practice, a small subset of EFPs is often sufficient for specific jet analysis tasks. By applying power counting arguments, we obtain linear relationships between EFPs that hold for quark and gluon jets to a specific order in the power counting. We test these relations in the parton shower generator Pythia, finding excellent agreement. Power counting allows us to truncate the basis of EFPs without affecting performance, which we corroborate through a study of quark-gluon tagging and regression. Published by SISSA, [Trieste] |
| Databáze: | OpenAIRE |
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