Measurement of the H/A $\rightarrow\tau\tau$ cross sectionand possible constraints on tan$\beta$

Abstract.The achievable precision of the cross section times branching ratio measurement from the event rates is estimated for the MSSM H/A $\rightarrow\tau\tau$ decay in the associated production process gg $\rightarrow \rm b \bar{\rm b}\rm H/A$ at large tan$\beta$ in CMS. This work demonstrates that the above production and decay process exhibit a large sensitivity to tan$\beta$ and thus add as a significant observable to a global fit of the SUSY parameters. To illustrate this potential an example is given concerning the achievable $\tan\beta$ determination accuracy that could be reached from the event rates and for a given set of SUSY parameters and uncertainties.