Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 12, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP12(2020)179
Keywords
Higgs Physics; Beyond Standard Model
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Funding
- Department of Science and Technology, Government of India [IFA13-PH-75]
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The prospects of observing the non-resonant di-Higgs production in the Standard Model at the proposed high energy upgrade of the LHC, viz. the HE-LHC (s = 27 TeV and L = 15 ab-1) is studied. Various di-Higgs final states are considered based on their cleanliness and production rates. The search for the non-resonant double Higgs production at the HE-LHC is performed in the bbgamma gamma, bbtau+tau-, bbWW, WWgamma gamma, bbZZ and bbmu+mu- channels. The signal-background discrimination is performed through multivariate analyses using the Boosted Decision Tree Decorrelated (BDTD) algorithm in the TMVA framework, the XGBoost toolkit and Deep Neural Network (DNN). The variation in the kinematics of Higgs pair production as a function of the self-coupling of the Higgs boson, lambda h, is also studied. The ramifications of varying lambda h on the bbgamma gamma, bbtau +tau - and bbWW search analyses optimized for the SM hypothesis is also explored.
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