# Search for narrow high-mass resonances in proton–proton collisions at $\sqrt{s} = 8 TeV$ decaying to a $Z$ and a Higgs Boson

CMS Collaboration; Khachatryan, V; Sirunyan, A M; Tumasyan, A; Amsler, C; Canelli, F; Chiochia, V; Hinzmann, A; De Cosa, A; Hreus, T; Kilminster, B; Lange, C; Ngadiuba, J; Pinna, D; Robmann, P; Ronga, F J; Taroni, S; Yang, Y; et al (2015). Search for narrow high-mass resonances in proton–proton collisions at $\sqrt{s} = 8 TeV$ decaying to a $Z$ and a Higgs Boson. Physics Letters B, 748:255-277.

## Abstract

The first search for a narrow, high-mass resonance decaying into $Z$ and Higgs (H) bosons is presented. The final state studied consists of a merged jet pair and a tau pair resulting from the decays of $Z$ and $H$ bosons, respectively. The analysis is based on a data sample of proton-proton collisions at a center-of-mass energy of 8 TeV, collected with the CMS experiment in 2012, and corresponding to an integrated luminosity of 19.7 inverse femtobarns. In the resonance mass range of interest, which extends from 0.8 to 2.5 TeV, the $Z$ and $H$ bosons are produced with large momenta, which implies that the final products of the two quarks or the two tau leptons must be detected within a small angular interval. From a combination of all possible decay modes of the tau leptons, production cross sections in a range between 0.9 and 27.8 fb are excluded at 95% confidence level, depending on the resonance mass.

## Abstract

The first search for a narrow, high-mass resonance decaying into $Z$ and Higgs (H) bosons is presented. The final state studied consists of a merged jet pair and a tau pair resulting from the decays of $Z$ and $H$ bosons, respectively. The analysis is based on a data sample of proton-proton collisions at a center-of-mass energy of 8 TeV, collected with the CMS experiment in 2012, and corresponding to an integrated luminosity of 19.7 inverse femtobarns. In the resonance mass range of interest, which extends from 0.8 to 2.5 TeV, the $Z$ and $H$ bosons are produced with large momenta, which implies that the final products of the two quarks or the two tau leptons must be detected within a small angular interval. From a combination of all possible decay modes of the tau leptons, production cross sections in a range between 0.9 and 27.8 fb are excluded at 95% confidence level, depending on the resonance mass.

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Item Type: Journal Article, refereed, original work 07 Faculty of Science > Physics Institute 530 Physics Physical Sciences > Nuclear and High Energy Physics English 17 February 2015 18 Feb 2016 10:35 14 Jul 2020 14:55 Elsevier 0370-2693 Gold Publisher DOI. An embargo period may apply. https://doi.org/10.1016/j.physletb.2015.07.011 arXiv:1502.04994v2