Observation of the Higgs boson decay to a pair of tau leptons
(2018) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 230, p. 1-34 (2018)
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- Authors
Wertz, Sébastien 
- Abstract
- A measurement of the coupling strength of the Higgs boson to tau leptons 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 13 TeV. The data set corresponds to an integrated luminosity of 35.9 inverse femtobarns. The H to tau tau 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 to tau tau signal production cross section and branching fraction is 1.09+0.27-0.26 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 8 TeV 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 tau leptons by a single experiment
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Citations
Bakhshiansohi, H., Bondu, O., Brochet, S., Bruno, G., Caputo, C., Caudron, A., de Visscher, S., Delaere, C., Delcourt, M., François, B., Giammanco, A., Jafari, A., Matthias Komm, Krintiras, G., Lemaitre, V., Magitteri, A., Mertens, A., Musich, M., Piotrzkowski, K., et al. (2018). Observation of the Higgs boson decay to a pair of tau leptons. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 230, 1-34. https://doi.org/10.1016/j.physletb.2018.02.004 (Original work published 2018)