Study of CMS sensitivity to neutrinoless $\ddot{I}„$ decay at LHC

Abstract

The Large Hadron Collider (LHC), scheduled to start operation in 2006, is foreseen to provide in the first year of running a total of $\sim 10^{12}$ $\ddot{I}„$ leptons. CMS (Compact Muon Solenoid) is a general-purpose experiment designed to study proton-proton and heavy-ion collisions at LHC. Even if the Susy particles and Higgs searches togheter with the B-physics present its main goal, the large amount of $\ddot{I}„$-lepton, could allow a systematic study of tau-physics. We have performed a full simulation of CMS using GEANT 3 package and the object-oriented reconstruction program ORCA to study the sensitivity to neutrinoless tau decay $\ddot{I}„\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}\hat{I}{¼}^{-}$ and $\ddot{I}„\to \hat{I}¼{\hat{I}}^3$. We present the analysis developed for these channels and the results obtained.

Invited talk at the seventh international Workshop on tau lepton physics (TAU02), Santa Cruz, Ca, Usa, September 2002 10 pages 15 eps figures