Measurement of Higgs Self-coupling from Non-resonant Higgs Pair Production and Decay to ${\mathrm{{b}}\bar{\mathrm{{b}}}\gamma \gamma }$ Final State in the CMS Experiment

The trilinear self-coupling of Higgs can directly be accessed at the LHC by inclusive production of Higgs pair. A search for the non-resonant Higgs pair production via gluon-gluon fusion, as well as Vector Boson Fusion processes, has been performed recently by CMS collaboration with the complete LHC Run-2 proton-proton collision data at centre of mass energy of $\sqrt{s}=$ 13 TeV, in the most sensitive 2$\gamma $ + 2b jets inclusive final state. This article presents the results of the measurement for inclusive Higgs pair production cross section as well as the estimation of relevant coupling parameters.