With all the #DiHiggs analyses in #LHCRun2 and the upcoming ones in #LHCRun3 we are in quite interesting times for this particular niche of science, stay tuned :slightly_smiling_face: #CMS-HIG-21-002 #Happy #Science 8/9

The multiple leptons in the final state are btw what makes it possible to search for such a rare process, they give a rather clean and unique signature not shared by many other processes. Despite being a new channel and containing only a small fraction of the #DiHiggs events produced (most of these events will have b-quarks in the final state, as already targeted by other analyses) we have quite an impressive result here with limits of 20 times the sm production rate.
6/9

This paper does not only include interpretations on standard model (sm) like #DiHiggs produktion but also constraints on one of the last unmeasured sm couplings, the trillinear Higgs self-coupling, as well as #BSM intepretations in #HEFT and resonant #DiHiggs production. 4/9

Not new, but newly published #CMSPaper about #DiHiggs #HHmultilepton https://link.springer.com/article/10.1007/JHEP07(2023)095 :partying_face: With recent progress in Analysis techniques and the amount of data taken in the #LHC Run 2 the @CMSexperiment and the #ATLASExperiment have become more and more sensitive to the rarest of #ParticlePhysics processes. This includes the study of processes involving the production of not one, but two #HiggsBosons. 1/9