Recent measurements of CPT violation and Lorentz symmetry breaking in
B0βBΛ0 mixing and Bs0ββBΛs0β mixing, obtained from data taken
by the LHCb experiment, are highlighted. The results are expressed in terms of
the Standard-Model Extension (SME) coefficients, which incorporate both CPT and
Lorentz violation. Due to the large boost of the B mesons at LHCb, the SME
coefficients can be determined with high precision. The bounds on these
coefficients are improved significantly compared to previous measurements.Comment: Presented at the Seventh Meeting on CPT and Lorentz Symmetry,
Bloomington, Indiana, June 20-24, 201