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Jet Rates in Higgs Boson Decay at Third Order in QCD.

Elliot Fox1, Aude Gehrmann-De Ridder2,3, Thomas Gehrmann3

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This summary is machine-generated.

We calculated Higgs boson jet production rates for its primary decays to bottom quarks and gluons. Distinct differences in jet rates support discriminating Higgs boson decay channels using quantum chromodynamics observables.

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Area of Science:

  • High Energy Physics
  • Quantum Chromodynamics (QCD)
  • Particle Physics

Background:

  • The Higgs boson plays a crucial role in the Standard Model of particle physics.
  • Understanding Higgs boson decays is key to probing fundamental interactions.
  • Distinguishing between different Higgs decay channels is an ongoing experimental challenge.

Purpose of the Study:

  • To compute the production rates of 2, 3, 4, and 5 jets in Higgs boson decays.
  • To analyze the dominant decay modes: Higgs to bottom quarks and Higgs to gluons.
  • To investigate the potential for discriminating Higgs decay channels using QCD observables.

Main Methods:

  • Calculations performed to third order in the strong coupling constant (QCD).
  • Next-to-next-to-leading order (NNLO) analysis for Higgs decay into three jets.
  • Next-to-next-to-next-to-leading order (N3LO) inference for the two-jet rate from inclusive decay.

Main Results:

  • Production rates for two, three, four, and five jets were computed for dominant Higgs decay modes.
  • Significant differences observed in jet rates' dependence on the jet resolution parameter between decay modes.
  • The computed rates provide a theoretical benchmark for experimental analysis.

Conclusions:

  • The study demonstrates distinct jet production characteristics for different Higgs boson decay modes.
  • These differences can be exploited using classic QCD observables to differentiate decay channels.
  • The findings contribute to a more precise understanding of Higgs boson properties and searches.