Prospects for new physics in rare decays, mixing,   delta(Gamma), and related CP violation 
at LHCb

LHCb is a dedicated experiment to study CP violation and other rare phenomena in B meson 
decays with unprecedented precision. This should provide a profound understanding of quark
flavour physics in the framework of the Standard Model and may reveal signs of physics
beyond. 
The B_s Bbar_s system is of special interest. It exhibits particle-antiparticle oscillations, 
described by three parameters: The difference of the mass between the B_s and the Bbar_s
meson, the difference between their life times, as well as the mixing phase. Many extensions
of the SM predict these parameters to be altered at the level of precision reached by the LHCb 
experiment. Their simultaneous determination is possible by the measurement of  
CP-asymmetries in B_s (Bbar_s) decays, e.g. in the decay channels B_s --> J/Psi Phi and
B_s --> PhiPhi.  

Rare decays

This talks describes the optimization of the LHCb experiment to perform these 
measurements. It describes possible scenarios how they are affected by new phenomena
and discusses the sensitivity of the LHCb experiment to assess physics beyond the SM.