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Search for resonant pair production of Higgs bosons in the bbZZ channel in proton-proton collisions at root s=13 TeV

CMS Collaboration, Albert M. Sirunyan, Armen R. Tumasyan, W. Adam, Federico Ambrogi, Thomas Bergauer, Marko Dragicevic, János Erö, A. Escalante Del Valle, R. Frühwirth, M. Jeitler, N. Krammer (+47 others)
2020

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A search for the production of a narrow-width resonance decaying into a pair of Higgs bosons decaying into the bbZZ channel is presented. The analysis is based on data collected with the CMS detector during 2016, in proton-proton collisions at the LHC, corresponding to an integrated luminosity of 35.9 fb −1 . The final states considered are the ones where one of the Z bosons decays into a pair of muons or electrons, and the other Z boson decays to either a pair of quarks or a pair of neutrinos.
more » ... Upper limits at 95% confidence level are placed on the production of narrow-width spin-0 or spin-2 particles decaying to a pair of Higgs bosons, in models with and without an extended Higgs sector. For a resonance mass range between 260 and 1000 GeV, limits on the production cross section times branching fraction of a spin-0 and spin-2 resonance range from 0.1 to 5.0 pb and 0.1 to 3.6 pb, respectively. These results set limits in parameter space in bulk Randall-Sundrum radion, Kaluza-Klein excitation of the graviton, and next-to-minimal two-Higgs doublet models (N2HDMs). For specific choices of parameters the N2HDM can be excluded in a mass range between 360 and 620 GeV for a resonance decaying to two Higgs bosons. This is the first search for Higgs boson resonant pair production in the bbZZ channel.
doi:10.3929/ethz-b-000438584 fatcat:6iepxvzvsreidarou7s4cq4s4a
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CMS Collaboration, Albert M. Sirunyan, Armen R. Tumasyan, W. Adam, Federico Ambrogi, Thomas Bergauer, Marko Dragicevic, János Erö, A. Escalante Del Valle, R. Frühwirth, M. Jeitler, N. Krammer, L. Lechner, Dietrich Liko, Thomas Madlener, Ivan Mikulec, Navid Rad, J. Schieck, Robert Schöfbeck, Markus Spanring, S. Templ, Malte Backhaus, P. Berger, Alessandro Calandri, Nadezda Chernyavskaya, G. Dissertori, Michael Dittmar, M. Donegà, Christian Dorfer, Tomasz Gadek, Tirso Alejandro Gomez Espinosa, C. Grab, Dmitry Hits, Werner Lustermann, Anne-Mazarine Lyon, Riccardo A. Manzoni, M. T. Meinhard, F. Micheli, Pasquale Musella, Francesca Nessi-Tedaldi, Felicitas Pauss, V. Perovic, Gaël Perrin, Luca Perrozzi, Simone Pigazzini, Maria G. Ratti, M. Reichmann, Christina Reissel, Thomas Reitenspiess, Branislav Ristic, Daniele Ruini, Diego A. Sanz Becerra, M. Schönenberger, Lesya Shchutska, Vinzenz Stampf, Minna L. Vesterbacka Olsson, Rainer Wallny, D.H. Zhu, Et Al.. "Search for resonant pair production of Higgs bosons in the bbZZ channel in proton-proton collisions at root s=13 TeV." (2020)