This measurement can be performed in a very similar manner with the data at \(\sqrt{s}=240\) GeV, albeit with a reduced discrimination between the HZ and the WW fusion contributions. The statistical precision with which \(\sigma_{{\rm WW\to H}}\times{\rm BR(H\to b\bar{b})}\) can be measured at both centre-of-mass energies is displayed in Table \ref{tab:WWFusion}.

These measurements can also be used to determine the total Higgs decay width in a way similar to that described in the previous section. Indeed, the total Higgs boson width is given by \(\Gamma_{\rm tot}=\Gamma{\rm(H\to WW)}/{\rm BR(H\to WW)}\). The partial decay width \(\Gamma{\rm(H\to WW)}\) is directly proportional to the inclusive cross section \(\sigma_{\rm WW\to H}\). The Higgs boson branching ratios to WW and to \({\rm b\bar{b}}\) are in turn obtained from the measurements performed at \(\sqrt{s}=240\) GeV, the precision of which can be inferred from Table \ref{tab:HiggsBranching}. With the 350 (240) GeV data, TLEP is therefore able to determine the Higgs boson decay width with a precision of the order of 1.2% (2.4%) with WW fusion. When combined with the ZZZ final state, the precision on the total Higgs boson width from TLEP is estimated to be 1.0%. These numbers are summarized in Table \ref{tab:Width}.