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The jet mass distribution after Soft Drop.

Simone Marzani1, Lais Schunk2, Gregory Soyez3

  • 11Dipartimento di Fisica, Università di Genova and INFN, Sezione di Genova, Via Dodecaneso 33, 16146 Genoa, Italy.

The European Physical Journal. C, Particles and Fields
|July 2, 2019
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Summary
This summary is machine-generated.

We computed the mass distribution of groomed jets using Soft Drop, including large logarithms and non-perturbative effects for precise theoretical predictions in particle physics.

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Area of Science:

  • High Energy Physics
  • Quantum Chromodynamics
  • Particle Shower Physics

Background:

  • Jets are fundamental objects in high-energy particle collisions.
  • Understanding jet properties requires theoretical calculations accounting for complex dynamics.
  • Soft Drop grooming is a key technique to define and analyze jets.

Purpose of the Study:

  • To perform a first-principle computation of the jet mass distribution after Soft Drop grooming.
  • To incorporate resummation of large logarithms and fixed-order calculations for improved accuracy.
  • To include non-perturbative corrections for a comprehensive theoretical model.

Main Methods:

  • First-principle computation of jet mass distribution.
  • Resummation of large logarithms up to next-to-logarithmic accuracy.
  • Matching to next-to-leading order fixed-order results.
  • Inclusion of non-perturbative corrections via Monte Carlo simulations.

Main Results:

  • Precise theoretical predictions for the mass distribution of Soft Drop-groomed jets.
  • Accurate handling of large logarithmic corrections in the transverse momentum spectrum.
  • Analytic expressions for hadronization and Underlying Event effects.

Conclusions:

  • The study provides a robust theoretical framework for analyzing groomed jets.
  • Results are crucial for precision measurements at particle colliders like the LHC.
  • The methodology enables better interpretation of experimental data in high-energy physics.