Measurement of $WWZ$ and $ZH$ Production Cross Sections at $\sqrt{s}$ =13 and 13.6 TeV
Year: 2025
Type: article
Abstract: A measurement is presented of the cross section in proton-proton collisions for the production of two W bosons and one Z boson. It is based on data recorded by the CMS experiment at the CERN LHC at center-of-mass energies s=13 and 13.6 TeV, corresponding to an integrated luminosity of 200 fb−1. Events with four charged leptons (electrons or muons) in the final state are selected. Both nonresonant WWZ production and ZH production, with the Higgs boson decaying into two W bosons, are reported. For the first time, the two processes are measured separately in a simultaneous fit. Combining the two modes, signal strengths relative to the standard model (SM) predictions of 0.75−0.29+0.34 and 1.74−0.60+0.71 are measured for s=13 and 13.6 TeV, respectively. The observed (expected) significance for the triboson signal is 3.8 (2.5) standard deviations for s=13.6 TeV, thus providing the first evidence for triboson production at this center-of-mass energy. Combining the two modes and the two center-of-mass energies, the inclusive signal strength relative to the SM prediction is measured to be 1.03−0.28+0.31, with an observed (expected) significance of 4.5 (5.0) standard deviations.
DOI: 10.5167/uzh-284102
Authors: Hayrapetyan, A., Makarenko, V., Tumasyan, A., Adam, W., Andrejkovic, J. W., Benato, L., Bergauer, T., Damanakis, K., Dragicevic, M., Giordano, C., Hussain, P. S., Jeitler, M., Krammer, N., Li, A., Liko, D., Mikulec, I., Schieck, J., Schöfbeck, R., Schwarz, D., Shooshtari, M., Sonawane, M., Waltenberger, W., Wulz, C.-E., Janssen, T., Kwon, H., Ocampo Henao, D., Van Laer, T., Van Mechelen, P., Bierkens, J., Breugelmans, N., CMS Collaboration, et al
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7126238487
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