Speaker
Aida El-Khadra
(University of Illinois)
Description
We present the status of our calculation of the hadronic matrix elements for neutral B-meson mixing with asqtad sea and valence light quarks and using the Wilson clover action with the Fermilab interpretation for the b quark. We calculate the matrix elements of all five local operators that contribute to neutral B-meson mixing both in and beyond the SM. Our analysis includes MILC asqtad ensembles at four different lattice spacings in the range a = 0.045-0.12 fm, and with light sea-quark masses as low as 0.05 times the physical strange quark mass. We perform a combined chiral-continuum extrapolation including the so-called wrong-spin contributions in simultaneous fits to the matrix elements of the five operators. Results for phenomenologically interesting quantities are presented with a complete systematic error budget.
Primary author
Aida El-Khadra
(University of Illinois)
Co-authors
Chris Bouchard
(The Ohio State University)
Elizabeth Freeland
(School of the Art Institute of Chicago)
