Evidence for the 125 GeV Higgs boson decaying to a pair of tau leptons
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
---|---|
Data(s) |
03/12/2014
03/12/2014
22/05/2014
|
Resumo |
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 fb(-1) at a centre-of-mass energy of 7 TeV and 19.7 fb(-1) 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 -> tau tau signal cross section times branching fraction 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. |
Formato |
72 |
Identificador |
http://dx.doi.org/10.1007/JHEP05(2014)104 Journal Of High Energy Physics. New York: Springer, n. 5, 72 p., 2014. 1029-8479 http://hdl.handle.net/11449/111358 10.1007/JHEP05(2014)104 WOS:000336734300001 WOS000336734300001.pdf |
Idioma(s) |
eng |
Publicador |
Springer |
Relação |
Journal of High Energy Physics |
Direitos |
openAccess |
Palavras-Chave | #Hadron-Hadron Scattering #Higgs physics |
Tipo |
info:eu-repo/semantics/article |