Speaker
Description
The Higgs boson discovery in the year 2012 at the Large Hadron Collider (LHC) has been so far the greatest success of the ATLAS and CMS collaborations [arXiv:1207.7214]. Since then multiple studies have been performed to deter- mine whether the properties of this particle (such as CP state, spin, mass and coupling to bosons and fermions) are compatible with the predictions of the Standard Model (SM) or not.
All measurements that have been done so far on the Higgs boson properties seem to verify the SM predictions. However, several questions related to the Higgs boson are still unanswered. One of which is whether the coupling of the Higgs to other bosons and fermions correspond to the predictions of the Standard Model or whether deviations with respect to the SM can be observed.
With the large data set that have been collected by the ATLAS and CMS experiments during the complete Run-2 of the LHC, it is possible to measure differential and fiducial production cross sections with a high precision and interpret them in the context of effective field theories. In these approaches, the SM Lagrangian is supplemented by additional higher-dimension operators. Some of these new operators encode new structures for the interaction between the Higgs boson and the SM particles, which can modify the shapes of kinematic distributions. It is assumed that the new interaction terms in the Lagrangian are the low-energy manifestation of new physics that exists at an energy scale that is much larger than the partonic centre-of-mass energies being probed.
This talk gives an experimental overview of the latest Higgs boson prop- erty measurements at the LHC experiments based on effective field theory ap- proaches.
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