Searching for New Physics in the Three-Body Decays of the Higgs-like Particle

We show that the three-body decays of the resonance recently discovered at the LHC are potentially sensitive to effects of new physics. Even if the fully integrated partial decay widths are consistent with the minimal Standard Model there is information that is lost upon integration, which can be uncovered in the differential decay widths. Concentrating on the decay

h \to Z \ell \bar{\ell}

, we identify the regions in the three-body phase space in which these effects become especially pronounced and could be detected in future experiments.

Note:

20 pages, 5 figures, matches version published in JHEP

Higgs Physics
Beyond Standard Model
Higgs particle: decay
Higgs particle --> Z0 lepton+ lepton-
standard model: minimal
effective field theory
effective Lagrangian
operator: higher-dimensional
operator: dimension: 6
phase space

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Figures(11)

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