This presentation will highlight recent advances in heavy-flavour physics achieved with Run-2 data collected by the ATLAS experiment. It will focus on the latest results in heavy-flavour hadron production and decay measurements, as well as the spectroscopy of exotic heavy-flavour states. Key topics include the most precise determination of the B0 meson lifetime, measurements of charmed meson...
In recent years, a number of charmonium-like states have been observed above the open-charm threshold in various experiments. Their properties often go against our expectations for regular charmonium states, rendering their interpretation difficult. With BESIII, we are a leading contributor to the experimental studies of the so-called XYZ states – studying Y-states directly in e+e-...
In this talk, I present novel methods [Bernlochner:2023bad] to determine the $\Upsilon(4S)\to B^+B^-$ and $\Upsilon(4S)\to B^0\bar B^0$ decay rates. The precision to which they and their ratio are known yields at present a limiting uncertainty around $2\%$ in measurements of absolute $B$ meson decay rates, and thus in a variety of applications, such as precision determinations of elements of...
