Abstract
Precision measurements of CP violating observables in the mixing and decay of B mesons provide excellent opportunities to search for possible contributions from New Physics beyond the Standard Model. In this contribution, key measurements pur-sued by the LHCb collaboration at CERN’s Large Hadron Collider (LHC) are described. Important results have been reported on topics including the CP violating phase φs in Bs 0 → J/ψφ (and related) decays, the angle γ of the CKM unitarity triangle, and direct CP violation effects in two-and three-body B meson decays to charmless final states. Latest results on CP violation in the charm sector are also reviewed. Results obtained from the analysis of data collected in 2011 already match or even surpass the measurements of previous experiments in their precision. All results obtained so far are compatible with Standard Model predictions.
Highlights
Why is CP violation of special interest? CP is the combination of the charge conjugation operator C and the parity operator P
Precision measurements of CP violating observables in the mixing and decay of B mesons provide excellent opportunities to search for possible contributions from New Physics beyond the Standard Model
CP violation, i.e., the violation of symmetry under CP, was first observed in the K0 system and was an indirect indication for new quarks, directly seen only over a decade later. This is an example of how flavour physics, i.e., the physics of electroweak changes of quark or lepton flavour changes, can be very powerful in finding effects of new heavy particles
Summary
Why is CP violation of special interest? CP is the combination of the charge conjugation operator C and the parity operator P. In this case one of the SM particles in the loop can be replaced by a possibly very heavy NP particle. It must be a possible final state of the decaying particle as well as of the anti-particle, i.e., fCP and fCP, must be possible To access this experimentally, the time dependent asymmetry. Their χ2, include track quality, particle identification (RICH, ECAL, MUON) for tracks, secondary vertex (SV) quality, kinematic variables like pT of the candidate or daughter tracks, separation between primary vertex (PV) and SV, impact parameter of daughter tracks and the pointing of the candidate to the PV The remainder of these proceedings is organised as follows.
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