Observation of the Higgs boson decay to a pair of τ leptons with the CMS detector

Sirunyan, AM, Tumasyan, A, Adam, W, Ambrogi, F, Asilar, E, Bergauer, T, Brandstetter, J, Brondolin, E, Dragicevic, M, Ero, J
et al (show 2225 more authors) (2018) Observation of the Higgs boson decay to a pair of τ leptons with the CMS detector. PHYSICS LETTERS B, 779. pp. 283-316.

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A measurement of the H→ττ signal strength is performed using events recorded in proton–proton collisions by the CMS experiment at the LHC in 2016 at a center-of-mass energy of 13TeV. The data set corresponds to an integrated luminosity of 35.9fb−1. The H→ττ signal is established with a significance of 4.9 standard deviations, to be compared to an expected significance of 4.7 standard deviations. The best fit of the product of the observed H→ττ signal production cross section and branching fraction is 1.09−0.26+0.27 times the standard model expectation. The combination with the corresponding measurement performed with data collected by the CMS experiment at center-of-mass energies of 7 and 8TeV leads to an observed significance of 5.9 standard deviations, equal to the expected significance. This is the first observation of Higgs boson decays to τ leptons by a single experiment.

Item Type: Article
Uncontrolled Keywords: CMS, Physics, Tau, Higgs, Observation, LHC
Depositing User: Symplectic Admin
Date Deposited: 22 Feb 2019 15:06
Last Modified: 12 Oct 2023 21:56
DOI: 10.1016/j.physletb.2018.02.004
Open Access URL: https://doi.org/10.1016/j.physletb.2018.02.004
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3033280