Les Houches

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Chair: Roberto Vega Morales

Members: Ken Mimasu, Veronica Sanz, Adam Falkowski, Alexandra Oliveira, Benjamin Fuks, Florian Goertz, Nicolas Chanon, Adam Martin. Please add your name if it's missing or you want to join.

Scope: Understanding how differential distributions of h>WW>2l2v decays may help constraining the EFT parameters.

1. Parametrization of hWW couplings as in the LHCHXSWG basis proposal. There are 4 couplings corresponding to different possible 0-derivative and 2-derivative tensor structures. D=6 EFT relates these to other Higgs couplings to Z and photon, but this is not very important for this project.

Tasks

1. Discussion on relating Higgs Anomalous Couplings CMS/ATLAS and EFT perspective. Point out what is missing from EFT viewpoint in existing analyses (simultaneous constraints, hW\Box W couplings) [Adam Nicolas Predrag Veronica]
2. Calculate how the relative h>WW (integrated) partial width depends on these 4 parameters. arXiv:1505.00046 calculated this at tree-level. It may be possible to refine this results to NLO, e.g. using eHDECAY.
3. Understand how the dependence of the 4 parameters is affected by the experimental cuts used when mu(h>WW) is measured at the LHC.
4. Understand how the differential distribution of \Delta \phi_{ll}, m_{ll}, and m_T depend on the 4 parameters