Since 2010 that André was heavily involved in the search for - and later observation of - the Higgs boson in the diphoton decay channel. André's need to understand the big picture led him to become one of the conveners of the CMS Higgs Combination and Properties group, as well as CMS contact in the LHC Higgs Cross Section Working Group for exploring the properties of this new particle. Before the LHC Run 2, André was a major contributor to the CMS combination of Run 1 Higgs results, and was deeply involved in combinations between ATLAS and CMS, such as the LHC combined measurement of the Higgs boson mass, which is the scientific article with the largest ever number of co-authors.
André's interests include science communication and the usefulness of CERN for non-particle physicists in general. That is why he is a CERN official guide since 2004 and was involved with the CLOUD experiment for six years.