Measurement of the photon polarization in ${\Lambda }_b\to \Lambda \gamma$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +994

The photon polarization in $b\to s\gamma$ transitions is measured for the first time in radiative b-baryon decays exploiting the unique spin structure of ${\Lambda }_b\to \Lambda \gamma$ decays. A data s…