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Higgs Boson self-coupling measurements at the LHC

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If you have a question about this talk, please contact Helen Vryonidou.

The recent discovery of the Higgs boson at the LHC has given us one of the most important missing parameters in the Standard Model: the Higgs mass itself. However, the Standard Model Lagrangian is in fact over-constrained. This allows us to view the Standard Model as an effective theory with free parameters. We can then attempt to explicitly verify the consistency of the couplings with our SM expectations. To perform this in the Higgs boson sector, and conclusively test the mechanism of electroweak symmetry breaking, measurements of the Higgs self-couplings are necessary. These are possible through the study of triple or double Higgs production at colliders. In this talk, I will be examining the prospects for such measurements, briefly reviewing past studies and examining the prospects at the LHC , focusing on Higgs pair production.

This talk is part of the HEP phenomenology joint Cavendish-DAMTP seminar series.

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