Measurement of the B0-B̄0 oscillation frequency δm<inf>d</inf> with the decays B⁰→D^-π⁺ and B⁰→J/ψK^*0

The B0-B̄0 oscillation frequency δm _d is measured by the LHCb experiment using a dataset corresponding to an integrated luminosity of 1.0fb ^-1 of proton-proton collisions at √s=7TeV, and is found to be δm _d=0.5156±0.0051(stat.)±0.0033(syst.)ps ^-1. The measurement is based on results from analyses of the decays B ⁰→D ^-π ⁺ (D ^-→K ⁺π ^-π ^-) and B ⁰→J/ψK ^*0 (J/ψ→μ ⁺μ ^-, K ^*0→K ⁺π ^-) and their charge conjugated modes.