Search For The Higgs Boson Decaying Into $\tau$-Leptons In The Di-Electron Channel

The first dedicated search for Higgs bosons decaying into tau pairs with two electrons and 4 neutrinos in the final state is presented. The search is performed with the CMS detector at the LHC based on an integrated luminosity of 4.9 fb$^{-1}$ and 19.7 fb$^{-1}$ at 7 TeV and 8 TeV, respectively. Events with two reconstructed electrons are selected before extensive multivariate analysis techniques are utilized to achieve an optimal background rejection. The $ee$-channel alone excludes $3.2\times(\sigma^H_{SM}\times BR(H\rightarrow \tau\tau))$ for $m_H = 120$ $GeV/c^2$ and $3.7\times(\sigma^H_{SM}\times BR(H\rightarrow \tau\tau))$ for $m_H = 125$ $GeV/c^2$ at 95\% confidence level. The $ee$-channel is combined into the official CMS $H\rightarrow \tau\tau$ analysis, to find, for the first time, direct evidence for couplings of the new Higgs-like boson to down-type fermions with 3.2$\sigma$.