Evidence for the 125 GeV Higgs boson decaying to a pair of τ leptons

By S. Chatrchyan, V. Khachatryan, A. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, J. Erö, C. Fabjan, M. Friedl and 2,200 more. 2014

374 citations recorded by the source corpus.

A bstractA search for a standard model Higgs boson decaying into a pair of τ leptons is performed using events recorded by the CMS experiment at the LHC in 2011 and 2012. The dataset corresponds to an integrated luminosity of 4.9 fb−1 at a centre-of-mass energy of 7 TeV and 19.7 fb−1 at 8 TeV. Each τ lepton decays hadronically or leptonically to an electron or a muon, leading to six different final states for the τ -lepton pair, all considered in this analysis. An excess of events is observed over the expected background contributions, with a local significance larger than 3 standard deviations for mH values between 115 and 130 GeV. The best fit of the observed H → τ τ signal cross section times branching fraction for mH = 125 GeV is 0.78 ± 0.27 times the standard model expectation. These observations constitute evidence for the 125 GeV Higgs boson decaying to a pair of τ leptons.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/b80e9a6213db3d473550338424b3936d22327c07

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

Citations in the corpus

Constraining anomalous Higgs boson couplings to the heavy flavor fermions using matrix element techniques (2016, background): “The decay of H → τþτ− is observed when results of CMS [47] and ATLAS”
Evidence for the direct decay of the 125 GeV Higgs boson to fermions (2014, methodology): “2 GeV) and the region where a Higgs boson was observed (∼125 GeV), together with a dedicated ττ mass reconstruction technique [18], allow for a good separation of the two contributions.”
Performance of the CMS missing transverse momentum reconstruction in pp data at √s = 8 TeV (2014, result): “These algorithms provide a crucial improvement to physics analyses sensitive to low or moderate E/T values, such as Higgs boson searches in the τ-lepton final states [32].”
Electroweak precision observables and Higgs-boson signal strengths in the Standard Model and beyond: present and future (2016, background): “f the combined t of the oblique parameters Sand T, and of the modied Zbb couplings, in the case when both gb R and g b L are non zero, and in the case in which either g R = 0 or gb L = 0. refs. [42,43] for H!˝+˝ , refs. [44{46] for H!ZZ, refs. [47{49] for H!W+W , and refs. [50{53] as well as the Tev”
Higgs Physics at the HL-LHC and HE-LHC (2019, methodology): “The analysis of current constraints has been taken directly from [184], which is based on the experimental data from [215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 143, 167, 139, 165, 123, 234, 235, 236, 237, 141, 137, 127, 133, 149, 238, 129, 166, 17”
Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector (2015, neutral): “2σ [16], and an excess corresponding to a significance of 2.”
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector (2017, neutral): “[21] CMS Collaboration, Evidence for the 125 GeV Higgs”