Description
Searches for mSUGRA models with τ-rich signatures in the τ − χ coannihilation
region, using 2010 data as a training ground in preparation for analyses with
the full 2011 data set is presented. The models are chosen such that they are
compatible with cosmological bounds. The analysis presents data collected in
2010 and compares to signal and background MC simulations.
After a basic event selection and cuts to reject QCD events, a single cut
to increase the signal significance is applied. Finally the data is split
into nτ = 0, nτ = 1, and nτ ≥ 2 channels and exclusion limits are presented.
It is shown that by including the contribution from τ-signal, it is possible
to improve the limits compared to a 0-lepton analysis.
The prospect for an one tau analysis with the full 2011 data set is also
discussed, with special emphasis on data driven methods of background
estimation.
Primary author
Mr
Ørjan Dale
(University of Bergen)
