Soft-drop grooming of hadron-collision final states has the potential to significantly reduce the impact of non-perturbative corrections, and in particular the underlying-event contribution. This eventually will enable a more direct comparison of accurate perturbative predictions with experimental measurements. In this study we consider soft-drop groomed dijet event shapes. We derive general results needed to perform the resummation of suitable event-shape variables to next-to-leading logarithmic (NLL) accuracy matched to exact next-to-leading order (NLO) QCD matrix elements. We compile predictions for the transverse-thrust shape accurate to NLO + NLL′ using the implementation of the Caesar formalism in the Sherpa event generator framework. We complement this by state-of-the-art parton- and hadron-level predictions based on NLO QCD matrix elements matched with parton showers. We explore the potential to mitigate non-perturbative corrections for particle-level and track-based measurements of transverse thrust by considering a wide range of soft-drop parameters. We find that soft-drop grooming indeed is very efficient in removing the underlying event. This motivates future experimental measurements to be compared to precise QCD predictions and employed to constrain non-perturbative models in Monte-Carlo simulations.
{ "_oai": { "updated": "2021-10-24T00:55:43Z", "id": "oai:repo.scoap3.org:63555", "sets": [ "JHEP" ] }, "authors": [ { "affiliations": [ { "country": "USA", "value": "University at Buffalo, The State University of New York, Buffalo, NY, 14260-1500, USA", "organization": "University at Buffalo, The State University of New York" }, { "country": "Germany", "value": "Institut f\u00fcr Theoretische Physik, Georg-August-Universit\u00e4t G\u00f6ttingen, G\u00f6ttingen, D-37077, Germany", "organization": "Georg-August-Universit\u00e4t G\u00f6ttingen" } ], "surname": "Baron", "email": "jfbaron@buffalo.edu", "full_name": "Baron, Jeremy", "given_names": "Jeremy" }, { "affiliations": [ { "country": "Germany", "value": "Institut f\u00fcr Theoretische Physik, Georg-August-Universit\u00e4t G\u00f6ttingen, G\u00f6ttingen, D-37077, Germany", "organization": "Georg-August-Universit\u00e4t G\u00f6ttingen" } ], "surname": "Reichelt", "email": "daniel.reichelt@uni-goettingen.de", "full_name": "Reichelt, Daniel", "given_names": "Daniel" }, { "affiliations": [ { "country": "Germany", "value": "Institut f\u00fcr Theoretische Physik, Georg-August-Universit\u00e4t G\u00f6ttingen, G\u00f6ttingen, D-37077, Germany", "organization": "Georg-August-Universit\u00e4t G\u00f6ttingen" } ], "surname": "Schumann", "email": "steffen.schumann@phys.uni-goettingen.de", "full_name": "Schumann, Steffen", "given_names": "Steffen" }, { "affiliations": [ { "country": "Germany", "value": "Institut f\u00fcr Theoretische Physik, Georg-August-Universit\u00e4t G\u00f6ttingen, G\u00f6ttingen, D-37077, Germany", "organization": "Georg-August-Universit\u00e4t G\u00f6ttingen" } ], "surname": "Schwanemann", "email": "niklas.schwanemann@stud.uni-goettingen.de", "full_name": "Schwanemann, Niklas", "given_names": "Niklas" }, { "affiliations": [ { "country": "Germany", "value": "Institut f\u00fcr Theoretische Physik, Georg-August-Universit\u00e4t G\u00f6ttingen, G\u00f6ttingen, D-37077, Germany", "organization": "Georg-August-Universit\u00e4t G\u00f6ttingen" } ], "surname": "Theeuwes", "email": "vtheeuwe@gmail.com", "full_name": "Theeuwes, Vincent", "given_names": "Vincent" } ], "titles": [ { "source": "Springer", "title": "Soft-drop grooming for hadronic event shapes" } ], "dois": [ { "value": "10.1007/JHEP07(2021)142" } ], "publication_info": [ { "page_end": "51", "journal_title": "Journal of High Energy Physics", "material": "article", "journal_volume": "2021", "artid": "JHEP07(2021)142", "year": 2021, "page_start": "1", "journal_issue": "7" } ], "$schema": "http://repo.scoap3.org/schemas/hep.json", "acquisition_source": { "date": "2021-10-24T00:34:14.145616", "source": "Springer", "method": "Springer", "submission_number": "85bc469e346111ecaa1b7aa32592193b" }, "page_nr": [ 51 ], "license": [ { "url": "https://creativecommons.org/licenses//by/4.0", "license": "CC-BY-4.0" } ], "copyright": [ { "holder": "The Author(s)", "year": "2021" } ], "control_number": "63555", "record_creation_date": "2021-07-21T06:30:22.243975", "_files": [ { "checksum": "md5:fe6851ef001fb5d4a5f3ba7e936cc068", "filetype": "xml", "bucket": "cbd33ec1-3b70-4b36-8e7e-ba5ef9c8383a", "version_id": "595c89db-c8d2-40fc-b9b7-55a738710b3a", "key": "10.1007/JHEP07(2021)142.xml", "size": 12748 }, { "checksum": "md5:8b578f69c15bd96003c6d83ebaf7661d", "filetype": "pdf/a", "bucket": "cbd33ec1-3b70-4b36-8e7e-ba5ef9c8383a", "version_id": "530efa6b-e0f9-442d-8587-049004b26e04", "key": "10.1007/JHEP07(2021)142_a.pdf", "size": 2466025 } ], "collections": [ { "primary": "Journal of High Energy Physics" } ], "arxiv_eprints": [ { "categories": [ "hep-ph", "hep-ex" ], "value": "2012.09574" } ], "abstracts": [ { "source": "Springer", "value": "Soft-drop grooming of hadron-collision final states has the potential to significantly reduce the impact of non-perturbative corrections, and in particular the underlying-event contribution. This eventually will enable a more direct comparison of accurate perturbative predictions with experimental measurements. In this study we consider soft-drop groomed dijet event shapes. We derive general results needed to perform the resummation of suitable event-shape variables to next-to-leading logarithmic (NLL) accuracy matched to exact next-to-leading order (NLO) QCD matrix elements. We compile predictions for the transverse-thrust shape accurate to NLO + NLL\u2032 using the implementation of the Caesar formalism in the Sherpa event generator framework. We complement this by state-of-the-art parton- and hadron-level predictions based on NLO QCD matrix elements matched with parton showers. We explore the potential to mitigate non-perturbative corrections for particle-level and track-based measurements of transverse thrust by considering a wide range of soft-drop parameters. We find that soft-drop grooming indeed is very efficient in removing the underlying event. This motivates future experimental measurements to be compared to precise QCD predictions and employed to constrain non-perturbative models in Monte-Carlo simulations." } ], "imprints": [ { "date": "2021-07-20", "publisher": "Springer" } ] }