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Title: Evidence for the 125 GeV Higgs boson decaying to a pair of $$\tau$$ leptons

Journal Article · · Journal of High Energy Physics (Online)

A search for a standard model Higgs boson decaying into a pair of tau 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 inverse femtobarns at a centre-of-mass energy of 7 TeV and 19.7 inverse femtobarns at 8 TeV. Each tau lepton decays hadronically or leptonically to an electron or a muon, leading to six different final states for the tau-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 m[H] values between 115 and 130 GeV. The best fit of the observed H to tau tau signal cross section for m[H] = 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 tau leptons.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
CMS Collaboration
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1151718
Report Number(s):
FERMILAB-PUB-14-082-CMS; CERN-PH-EP-2014-001; CMS-HIG-13-004; arXiv eprint number arXiv:1401.5041
Journal Information:
Journal of High Energy Physics (Online), Vol. 2014, Issue 5; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 236 works
Citation information provided by
Web of Science

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Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector text January 2017
Limits on the Higgs boson lifetime and width from its decay to four charged leptons text January 2015
Tau leptons and the decay H → τ τ at CMS journal May 2016
Limits on the Higgs boson lifetime and width from its decay to four charged leptons text January 2015
Measurements of Higgs-boson decays to leptons with the ATLAS detector journal January 2019
Higgs precision analysis updates 2014 journal November 2014
Low-energy phenomenology of trinification: An effective left-right-symmetric model journal March 2015
A perturbed lepton-specific two-Higgs-doublet model facing experimental hints for physics beyond the Standard Model text January 2015
Observation and measurement of Higgs boson decays to $WW^{\ast}$ with the ATLAS detector text January 2014
Exploring CP phase in τ -lepton Yukawa coupling in Higgs decays at the LHC journal August 2019
Search for the SM Scalar in the $Z H → ℓ ℓ τ τ$ Channel book November 2017
Heavy neutrinos from gluon fusion journal September 2017
Constraining anomalous Higgs boson couplings to the heavy flavor fermions using matrix element techniques text January 2016
Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8 $$\,\text {TeV}$$ TeV journal May 2015
New LHC benchmarks for the $$\mathcal{CP}$$ CP -conserving two-Higgs-doublet model journal October 2015
Observation of Higgs Boson Decay to Bottom Quarks journal September 2018
Observation and measurement of Higgs boson decays to WW* with the ATLAS detector text January 2015
B-meson anomalies and Higgs physics in flavored $$U(1)'$$ U ( 1 ) ′ model journal April 2018
Measurement of the $\mathrm {Z}/\gamma ^{*} \rightarrow \tau \tau $ cross section in pp collisions at $\sqrt{s} = 13 \hbox { TeV}$=13TeV and validation of $\tau $ lepton analysis techniques text January 2018
Observation and measurement of Higgs boson decays to W W * with the ATLAS detector journal July 2015
The CMS trigger system text January 2017
Constraining CP-violating Higgs Sectors at the LHC using gluon fusion text January 2014
Observation of the diphoton decay of the Higgs boson and measurement of its properties text January 2014
Measurement of the differential cross sections for top quark pair production as a function of kinematic event variables in p p collisions at s = 7 and 8 TeV journal September 2016
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Observation of Higgs Boson Decay to Bottom Quarks text January 2018
Cancellations Between Two-Loop Contributions to the Electron Electric Dipole Moment with a C P -Violating Higgs Sector journal July 2015
Decay of the Higgs boson to τ τ + and non-Hermiticy of the Yukawa interaction journal October 2016
The CMS trigger system text January 2016
Observation of the diphoton decay of the Higgs boson and measurement of its properties text January 2014
Observation of Higgs Boson Decay to Bottom Quarks text January 2018
Observation of the diphoton decay of the Higgs boson and measurement of its properties journal October 2014
Constraints on the spin-parity and anomalous H V V couplings of the Higgs boson in proton collisions at 7 and 8 TeV text January 2015
Observation of Higgs boson decay to bottom quarks text January 2018
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