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Abstract
This paper presents a study of a possible contribution to a Higgs boson signal in the hh → γγγγ channel due to H → hh decays, in the framework of the CP-conserving 2-Higgs Doublet Model Type-I (2HDM-I), where the heavier of the two CP-even Higgs bosons defined herein, H, is the SM-like Higgs state observed with a mass of 125 GeV at the Large Hadron Collider (LHC). We perform a broad scan of the 2HDM-I parameter space, in presence of both up-to-date theoretical and experimental constraints, in order to extract the interesting regions yielding such a signal. Then, after validating our numerical framework against public experimental analyses carried out at the LHC, we proceed to assess its scope in constraining and/or extracting the gg → H → hh → γγγγ signal in presence of a sophisticated Monte Carlo (MC) simulation. We find that, over a substantial region of the 2HDM-I parameter space presently un-accessible, the LHC will be able to establish such a potential signature in the next 2–3 years.
Details
1 Faculté des Sciences et Techniques, Abdelmalek Essaadi University, Tangier, Morocco
2 LPHEA, Semlalia, Cadi Ayyad University, Marrakech, Morocco; MSISM Team, Faculté Polydisciplinaire de Safi, Sidi Bouzid, Safi, Morocco
3 School of Physics and Astronomy, University of Southampton, Southampton, United Kingdom
4 LPHEA, Semlalia, Cadi Ayyad University, Marrakech, Morocco
5 School of Physics Sciences, University of Chinese, Academy of Sciences, Beijing, P.R. China; Center for Future High Energy Physics, Chinese Academy of Sciences, Beijing, P.R. China
6 Center for Future High Energy Physics, Chinese Academy of Sciences, Beijing, P.R. China