Observation of the Higgs Boson Decay to a Pair of τ Leptons with the CMS Detector

Physics Letters B 2018
Viesturs Veckalns, CERN international group of authors

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.

Atslēgas vārdi
CMS, Higgs, LHC, Observation, Physics, Tau
DOI
10.1016/j.physletb.2018.02.004
Hipersaite
https://www.sciencedirect.com/science/article/pii/S0370269318301035?via%3Dihub

Veckalns, V., international group of authors, C. Observation of the Higgs Boson Decay to a Pair of τ Leptons with the CMS Detector. Physics Letters B, 2018, Vol.779, 283.-316.lpp. ISSN 0370-2693. Pieejams: doi:10.1016/j.physletb.2018.02.004

Publikācijas valoda
English (en)