Patrick Janot edited 13311371900452937.tex  over 10 years ago

Commit id: 7411c790801a02bbb8929c3eda39f0b8e01bef6e

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From the sole reading of this table, it becomes obvious that only circular colliders are in a position to produce enough Higgs bosons in a reasonable amount of time to aim at the desired sub-per-cent precision for Higgs boson coupling measurements. Detailed simulations and simple analyses have been carried out in Ref.~\cite{cite:1208.1662} to ascertain the claim, with an integrated luminosity of $500~\infb$ (representing only  one year of data taking at $\sqrt{s} = 240$ GeV  in one of the TLEP detectors), detectors, but equivalent to twice the ILC baseline programme at the same energy),  fully simulated in the CMS detector. For example, the distribution of the mass recoiling against the lepton pair in the ${\rm H}\epem$ and ${\rm H}\mpmm$ final states, independently of the Higgs boson decay, in shown in Fig.~\ref{fig:Recoil}, taken from Ref.~\cite{cite:1208.1662}, for one year of data taking in the CMS detector. The number of Higgs boson events obtained from a fit to this distribution of the signal and background contributions allows the total $\epemto {\rm HZ}$ cross section to be measured with a precision of 0.4\% at TLEP.