Measurements of masses and lifetimes of b-hadrons at ATLAS

Using data collected by the Large Hadron Collider in 2010‐2011, the ATLAS Collaboration has measured the lifetimes and masses of the Λb baryon, Bd and Bs mesons, and the average lifetime for inclusive B production at 7 TeV center of mass energy in proton-proton collisions. The results are in agreement with previous measurements and demonstrate excellent detector performance.