of this work goes as follows: In section 2 we introduce the chiral effective lagrangian to be used with its parameters and the corresponding Feynman rules. In section 3 we compute the cross-section of the $LHC$ subprocesses that are relevant for measuring the parameters. In section 4 we consider the signatures and the possible backgrounds. In section 5 we show how we compute the total number of expected events at the $LHC$ from the subprocess cross-sections for the signals and backgrounds. In section 6 we discuss the sensitivity of the machine to the different parameters, we define the optimal cuts and we compute the statistical significance of the different parameter measures and estimate the statistical errors. In section 7 we consider other sources of systematical errors such as the uncertainty on the proton structure functions and in section 8 the effect of the running of the parameters. Finally, in section 9 we review the main conclussions of our work.

The effective Lagrangian and the Feynman rules
==============================================

In this section we consider the most general effective Lagrangian for the $ESB$ compatible with the $SU(2)_L \times U(1)_Y$ local symmetry of the $SM$ and the breaking pattern $SU(2)_L \times U(1)_Y
\rightarrow U(1)_{\rm 