Study of CMS sensitivity to neutrinoless $τ$ decay at LHC

• Main Author: Santinelli, R.
• Format: Text
• Language: unknown
• Published: arXiv 2002
• Subjects: High Energy Physics - Experiment hep-ex; FOS Physical sciences; Orca
• Online Access: https://dx.doi.org/10.48550/arxiv.hep-ex/0210033; https://arxiv.org/abs/hep-ex/0210033

The Large Hadron Collider (LHC), scheduled to start operation in 2006, is foreseen to provide in the first year of running a total of $\sim 10^{12}$ $τ$ 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 $τ$-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 $τ\to μ^+ μ^- μ^- $ and $τ\to μγ$. 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