numerical calculations: Monte Carlo

$B_sto D_s/Bto D$ Semileptonic Form-Factor Ratios and Their Application to BR($Btextasciicircum0_sto mutextasciicircum+mutextasciicircum-$)

We calculate form-factor ratios between the semileptonic decays barB-textgreaterDtextasciicircum+elltextasciicircum-barnu and barB_s-textgreaterD_stextasciicircum+elltextasciicircum-barnu with lattice QCD. These ratios are a key theoretical input in …

B- and D-meson decay constants from three-flavor lattice QCD

We calculate the leptonic decay constants of B_(s) and D_(s) mesons in lattice QCD using staggered light quarks and Fermilab bottom and charm quarks. We compute the heavy-light meson correlation functions on the MILC asqtad-improved staggered gauge …

WW Scattering Parameters via Pseudoscalar Phase Shifts

Using domain-wall lattice simulations, we study pseudoscalar-pseudoscalar scattering in the maximal isospin channel for an SU(3) gauge theory with two and six fermion flavors in the fundamental representation. This calculation of the S-wave …

Parity Doubling and the S Parameter Below the Conformal Window

We describe a lattice simulation of the masses and decay constants of the lowest-lying vector and axial resonances, and the electroweak S parameter, in an SU(3) gauge theory with $N_f = 2$ and 6 fermions in the fundamental representation. The …