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Title

Search for heavy resonances decaying into a W or Z boson and a Higgs boson in final states with leptons and b -jets in 36 fb −1 of √s = 13 TeV pp collisions with the ATLAS detector

CollaborationWith : Akilli, Ece / Ancu, Lucian Stefan / Benoit, Mathieu / Calace, Noemi / Clark, Allan Geoffrey / Coccaro, Andrea / Della Volpe, Domenico / Di Bello, Francesco / Dubreuil, Arnaud / Ferrere, Didier / Golling, Tobias / Gonzalez Sevilla, Sergio / Iacobucci, Giuseppe / Jansky, Roland / Katre, Akshay / Khoo, Teng Jian / Lanfermann, Marie Christine / Lionti, Anthony Eric / March Ruiz, Luis / Mermod, Philippe / Nackenhorst, Olaf / Nessi, Marzio / Pandini, Carlo / Paolozzi, Lorenzo / Schramm, Steven / Sfyrla, Anna / Valente, Marco / Wu, Xin
Published in Journal of High Energy Physics. 2018, vol. 1803, p. 174
Collection Open Access - SCOAP3
Abstract A search is conducted for new resonances decaying into a W or Z boson and a 125 GeV Higgs boson in the ν ν ¯ b b ¯ $$ \nu \overline{\nu}b\overline{b} $$ , ℓ ± ν b b ¯ $$ {\ell}^{\pm}\nu b\overline{b} $$ , and ℓ + ℓ − b b ¯ $$ {\ell}^{+}{\ell}^{-}b\overline{b} $$ final states, where ℓ ± = e ± or μ ± , in pp collisions at √s = 13 TeV. The data used correspond to a total integrated luminosity of 36.1 fb −1 collected with the ATLAS detector at the Large Hadron Collider during the 2015 and 2016 data-taking periods. The search is conducted by examining the reconstructed invariant or transverse mass distributions of W h and Zh candidates for evidence of a localised excess in the mass range of 220 GeV up to 5 TeV. No significant excess is observed and the results are interpreted in terms of constraints on the production cross-section times branching fraction of heavy W ′ and Z ′ resonances in heavy-vector-triplet models and the CP-odd scalar boson A in two-Higgs-doublet models. Upper limits are placed at the 95% confidence level and range between 9 . 0 × 10 −4 pb and 7 . 3 × 10 −1 pb depending on the model and mass of the resonance.
Keywords Beyond Standard ModelHadron-Hadron scattering (experiments)
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arXiv: 1712.06518
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ATLAS COLLABORATION. Search for heavy resonances decaying into a W or Z boson and a Higgs boson in final states with leptons and b -jets in 36 fb −1 of √s = 13 TeV pp collisions with the ATLAS detector. In: Journal of High Energy Physics, 2018, vol. 1803, p. 174. https://archive-ouverte.unige.ch/unige:104092

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Deposited on : 2018-05-07

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