Speaker
Ms
Bipasha Chakraborty
(SUPA, School of Physics and Astronomy, University of Glasgow)
Description
We describe a new technique (presented in arXiv:1403.1778) to determine the contribution to the anomalous magnetic moment (g-2) of the muon coming from the hadronic vacuum polarization using lattice QCD. Our method uses Padé approximants to reconstruct the Adler function from its derivatives at q^2=0. These are obtained simply and accurately from time-moments of the vector current-current correlator at zero spatial momentum. We test the method using strange quark correlators calculated on MILC Collaboration's n_f = 2+1+1 HISQ ensembles at multiple values of the lattice spacing, multiple volumes and multiple light sea quark masses (including physical pion mass configurations).
Primary authors
Ms
Bipasha Chakraborty
(SUPA, School of Physics and Astronomy, University of Glasgow)
Prof.
Christine Davies
(SUPA, School of Physics and Astronomy, University of Glasgow)
Co-authors
Dr
G. C. Donald
(Institut fur Theoretische Physik, Universitat Regensburg)
Prof.
G. P. Lepage
(Laboratory for Elementary-Particle Physics, Cornell University)
Dr
J. Koponen
(SUPA, School of Physics and Astronomy, University of Glasgow)
Dr
R. J. Dowdall
(DAMTP, University of Cambridge)
Dr
T. Teubner
(Department of Mathematical Sciences, University of Liverpool)
