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

2012/11/05 by Javad Komijani, Komijani, Javad, Claude Bernard +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #hep-lat

paper · pdf · doi:10.48550/arxiv.1211.0785

7 pages, 1 figures, 2 tables. Proceedings of the 30th International Symposium on Lattice Field Theory - Lattice 2012; June 24-29, 2012; Cairns, Australia

arxiv created 2012/11/05 · arxiv updated 2012/11/06

Abstract

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 (\schpt) to include such all-staggered heavy-light mesons. We assume that the heavy quark action is sufficiently improved that we may take a m_Q <<1 (where m_Q is the heavy quark mass), but also that m_Q>>Λ_QCD so that a continuum heavy quark expansion is appropriate. Using this \schpt, 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.

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