Staggered Chiral Perturbation Theory for All-Staggered Heavy-Light Mesons

الأصل · EN

In HISQ simulations by the MILC and Fermilab Lattice collaborations, both the light quarks and the charm quark are staggered. We extend staggered chiral perturbation theory () to include such all-staggered heavy-light mesons. We assume that the heavy quark action is sufficiently improved that we may take a mQ <<1 (where mQ is the heavy quark mass), but also that mQ>>ΛQCD so that a continuum heavy quark expansion is appropriate. Using this, the leptonic decay constant of the heavy-light meson is calculated at next-to-leading-order. The pattern of taste splittings in the heavy-light meson masses is also investigated.