Measurement of the direct $CP$ asymmetry in $\bar{B}\to X_{s+d}\gamma$ decays with a lepton tag

L. Pesántez, P. Urquijo, J. Dingfelder +180

We report the measurement of the direct $CP$ asymmetry in the radiative $\bar{B}\to X_{s+d}\gamma$ decay using a data sample of $(772\pm 11)\times 10^6$ $B\bar{B}$ pairs collec…