Feasibility study of a LVL-2 low pT di-muon trigger based on Tile calorimeter

A strategy for tagging muons in TILECAL at LVL2 will be presented and its efficiency and contamination will be discussed. It turns out that TILECAL can identify muons with good efficiency down to $p_T=2GeV/c$ where the stand-alone muon spectrometer has zero efficiency. A method of exploiting all information available at LVL2 to reduce spurious muon-tag and measure the candidate muon momentum is discussed. This scheme is tested in particular in the case of $b\bar{b}$ events at low LHC luminosity ($10^{33}cm^{-1}s^{-2}$) with full simulation of experimental conditions. The results will be discussed and trigger rate calculation will be presented.