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Search for the Standard Model Higgs Boson and a Heavy Resonance in the WW(*) → (еνеν + μνμν) Decay Channel in the ATLAS Experiment

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Abstract

The authors as part of the HWW team of the ATLAS experiment at the LHC have studied events with two opposite-sign muons and two electrons in the search for the Standard Model Higgs boson H and a heavy resonance R in the channel of decay into two W-bosons. The analysis was carried out using the complete statistics of proton–proton collision events for 2015–2018 exposure for the c.m.s. energy of protons \(\sqrt s \) = 13 TeV. The application of a deep neural network made it possible to significantly improve our earlier results for separation of the H-boson signal in the vector-boson-fusion production mechanism. Various theoretical models were used to calculate the new expected upper limits for the production of R resonance with a spin 0, 1, or 2 in addition to those obtained earlier in a toy NWA model for a heavy Higgs boson.

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ACKNOWLEDGMENTS

We authors are grateful to our colleagues from the working group of the ATLAS Collaboration for studying the Higgs boson in the H → WW* channel (HWW).

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Authors and Affiliations

  1. National Research Centre “Kurchatov Institute”, 123182, Moscow, Russia

    A. A. Gavrilyuk, E. N. Ramakoti & I. I. Tsukerman

Authors
  1. A. A. Gavrilyuk
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  2. E. N. Ramakoti
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  3. I. I. Tsukerman
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Correspondence to E. N. Ramakoti.

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The authors declare that they have no conflicts of interest.

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Translated by M. Shmatikov

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Gavrilyuk, A.A., Ramakoti, E.N. & Tsukerman, I.I. Search for the Standard Model Higgs Boson and a Heavy Resonance in the WW(*) → (еνеν + μνμν) Decay Channel in the ATLAS Experiment. Phys. Atom. Nuclei 85, 1587–1591 (2022). https://doi.org/10.1134/S1063778822090125

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  • DOI: https://doi.org/10.1134/S1063778822090125

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