Soft-drop grooming for hadronic event shapes

Jeremy Baron (University at Buffalo, The State University of New York, Buffalo, NY, 14260-1500, USA; Institut für Theoretische Physik, Georg-August-Universität Göttingen, Göttingen, D-37077, Germany) ; Daniel Reichelt (Institut für Theoretische Physik, Georg-August-Universität Göttingen, Göttingen, D-37077, Germany) ; Steffen Schumann (Institut für Theoretische Physik, Georg-August-Universität Göttingen, Göttingen, D-37077, Germany) ; Niklas Schwanemann (Institut für Theoretische Physik, Georg-August-Universität Göttingen, Göttingen, D-37077, Germany) ; Vincent Theeuwes (Institut für Theoretische Physik, Georg-August-Universität Göttingen, Göttingen, D-37077, Germany)

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"
    }
  ]
}
Published on:
20 July 2021
Publisher:
Springer
Published in:
Journal of High Energy Physics , Volume 2021 (2021)
Issue 7
Pages 1-51
DOI:
https://doi.org/10.1007/JHEP07(2021)142
arXiv:
2012.09574
Copyrights:
The Author(s)
Licence:
CC-BY-4.0

Fulltext files: