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State-of-the-art simulation of Higgs boson production achieved

11 November 2013

State-of-the-art simulation of Higgs boson production achieved

NNLOPS simulation of Higgs boson production

Keith Hamilton, Paolo Nason, Emanuele Re, Giulia Zanderighi

Journal of High Energy Physics, 222 (3013)

Simulated production of a Higgs event in ATLAS.

The discovery of a new spin-zero particle in the search for the Higgs boson at the Large Hadron Collider, has focused the CERN physics agenda on studying its properties. Researchers aim to establish whether the new particle conforms to the expected behaviour of the Standard Model Higgs boson, or if it is in fact something more subtle.

One of the fundamental limitations in their ability to resolve the nature of the new particle is the precision afforded by theoretical predictions in describing its production and decay rates, and the associated experimental acceptances.

Published in JHEP, UCL and CERN theorists present, for the first time, a simulation of Higgs boson production accurate at next-to-next-to-leading order in QCD perturbation theory, matched to a parton shower resummation of approximate all-orders corrections, yielding a life-like description of these collisions at the particle-level. As such, this work marks a new level of theoretical precision in the simulation of LHC processes.


Image:

Simulated production of a Higgs event in ATLAS.
ATLAS Experiment © 2013 CERN