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Curiosities: Sudakov Safety

  • Simone Marzani
  • Gregory Soyez
  • Michael Spannowsky
Chapter
  • 344 Downloads
Part of the Lecture Notes in Physics book series (LNP, volume 958)

Abstract

In this Chapter we go back to the SoftDrop algorithm and we study two variables deeply connected to it: the angular separation of the two subjets that pass SoftDrop and their momentum sharing. We find that while the former can be described using the all-order techniques described so far, the latter one cannot be. It instead exhibits peculiar features. This observable is not collinear safe for all values of the angular exponent β but it belongs to the wider class of Sudakov-safe observables.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Simone Marzani
    • 1
  • Gregory Soyez
    • 2
  • Michael Spannowsky
    • 3
  1. 1.Dipartimento di FisicaUniversità di GenovaGenovaItaly
  2. 2.Institut de Physique TheoriqueCNRS UMR 3681, CEA SaclayGif-sur-Yvette cedexFrance
  3. 3.Department of Physics, Institute for Particle Physics PhenomenologyDurham UniversityDurhamUK

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