Speaker
Felix Erben
(University of Edinburgh)
Description
We are presenting our ongoing lattice QCD study on $B - \bar{B}$ mixing on several RBC/UKQCD and JLQCD ensembles with 2+1 dynamical-flavour chirally symmetric domain wall fermions, including physical-pion-mass ensembles. The inverse lattice spacings range from a coarse 1.7 GeV to a very fine 4.5 GeV, allowing us to simulate near the b-quark mass. We extract bag parameters $B_{B_d}$ and $B_{B_s}$ both for the standard-model operator as well as the four BSM operators. On each ensemble, we are simulating a range of heavy-quark masses from below the charm-quark mass towards the bottom-quark mass, with one data point reaching about 75% of $m_{\eta_b}$.
Primary author
Felix Erben
(University of Edinburgh)
