Lattice calculation of the leading strange quark-connected contribution   to the muon $g-2$
  We present results for the leading hadronic contribution to the muon anomalous magnetic moment due to strange quark-connected vacuum polarisation effects. Simulations were performed using RBC--UKQCD's $N_f=2+1$ domain wall fermion ensembles with physical light sea quark masses at two lattice spacings. We consider a large number of analysis scenarios in order to obtain solid estimates for residual systematic effects. Our final result in the continuum limit is $a_\mu^{(2)\,{\rm had},\,s}=53.1(9)\left(^{+1}_{-3}\right)\times10^{-10}$. 
T. Blum, P.A. Boyle, L. Del Debbio, R.J. Hudspith, T. Izubuchi, A.   J\"uttner, C. Lehner, R. Lewis, K. Maltman, M. Krsti\'c...
hep-lat hep-ph