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Towards an understanding of jet substructure

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  • Published: 05 September 2013
  • Volume 2013, article number 29, (2013)
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Towards an understanding of jet substructure
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  • Mrinal Dasgupta1,2,
  • Alessandro Fregoso2,
  • Simone Marzani3 &
  • …
  • Gavin P. Salam4,5 

  • 1049 Accesses

  • 375 Citations

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Abstract

We present first analytic, resummed calculations of the rates at which wide-spread jet substructure tools tag QCD jets. As well as considering trimming, pruning and the mass-drop tagger, we introduce modified tools with improved analytical and phenomenological behaviours. Most taggers have double logarithmic resummed structures. The modified mass-drop tagger is special in that it involves only single logarithms, and is free from a complex class of terms known as non-global logarithms. The modification of pruning brings an improved ability to discriminate between the different colour structures that characterise signal and background. As we outline in an extensive phenomenological discussion, these results provide valuable insight into the performance of existing tools and help lay robust foundations for future substructure studies.

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Authors and Affiliations

  1. Consortium for Fundamental Physics, School of Physics & Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.

    Mrinal Dasgupta

  2. School of Physics & Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.

    Mrinal Dasgupta & Alessandro Fregoso

  3. Institute for Particle Physics Phenomenology, Durham University, South Road, Durham, DH1 3LE, U.K.

    Simone Marzani

  4. CERN, PH-TH, CH-1211, Geneva 23, Switzerland

    Gavin P. Salam

  5. LPTHE, CNRS UMR 7589, UPMC Univ. Paris 6, Place Jussieu, Paris, 75252, France

    Gavin P. Salam

Authors
  1. Mrinal Dasgupta
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  2. Alessandro Fregoso
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  3. Simone Marzani
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  4. Gavin P. Salam
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Corresponding author

Correspondence to Simone Marzani.

Additional information

ArXiv ePrint: 1307.0007

On leave from Department of Physics, Princeton University, Princeton, NJ 08544, U.S.A. (Gavin P. Salam)

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Dasgupta, M., Fregoso, A., Marzani, S. et al. Towards an understanding of jet substructure. J. High Energ. Phys. 2013, 29 (2013). https://doi.org/10.1007/JHEP09(2013)029

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  • Received: 04 July 2013

  • Revised: 31 July 2013

  • Accepted: 06 August 2013

  • Published: 05 September 2013

  • DOI: https://doi.org/10.1007/JHEP09(2013)029

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Keywords

  • QCD Phenomenology
  • Jets
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