Measurements of the polarisation amplitudes and triple product   asymmetries in B_s^0 to phi phi
  Using 1fb^{-1} of pp collision data collected at center of mass energy sqrt{s} = 7 TeV during 2011 by the LHCb detector. Measurements of the triple product asymmetries, polarisation amplitudes and strong phase difference in the decay B_s^0 to phi phi are presented. 
Dean Lambert (for the LHCb Collaboration)
hep-ex