Search for Nonresonant Pair Production of Highly Energetic Higgs Bosons Decaying to Bottom Quarks
Physical review letters, vol.131, no.4, pp.41803, 2023 (SCI-Expanded)
- Publication Type: Article / Article
- Volume: 131 Issue: 4
- Publication Date: 2023
- Doi Number: 10.1103/physrevlett.131.041803
- Journal Name: Physical review letters
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Compendex, INSPEC, zbMATH, DIALNET
- Page Numbers: pp.41803
- Middle East Technical University Affiliated: Yes
Abstract
A search for nonresonant Higgs boson (H) pair production via gluon and vector boson (V) fusion is performed in the four-bottom-quark final state, using proton-proton collision data at 13 TeV corresponding to 138 fb^{-1} collected by the CMS experiment at the LHC. The analysis targets Lorentz-boosted H pairs identified using a graph neural network. It constrains the strengths relative to the standard model of the H self-coupling and the quartic VVHH couplings, κ_{2V}, excluding κ_{2V}=0 for the first time, with a significance of 6.3 standard deviations when other H couplings are fixed to their standard model values.