Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2006-10-06
PoSLAT2006:176,2006
Physics
High Energy Physics
High Energy Physics - Lattice
7 pages, 5 figures, talk presented at Lattice2006 (Hadron Spectroscopy)
Scientific paper
The Asqtad improved staggered fermion formalism has been a valuable tool in successfully calculating the non-singlet parts of the hadronic spectrum. We are engaged in a project to calculate the spectrum of the pseudoscalar singlet mesons with 2+1-flavor Asqtad staggered gauge configurations. Propagators of flavor-singlet states incorporate contributions from both disconnected and connected diagrams, and hence are sensitive to any differences in the actions governing the sea and valence fermions on the lattice. As such, they also present the possibility of a probe of the validity of the ``fourth-root trick'' in the staggered fermion formulation. We present an update on our progress toward measuring the $\eta'$ mass on 2+1-flavor Asqtad staggered gauge configurations, including a review of methods and preliminary results. We also show a strong correlation between ${\rm Tr}(\gamma_5\otimes 1)$ and the topological charge in these configurations, as predicted by the index theorem.
Gregory Eric B.
Irving Alan C.
McNeile Craig
Richards Christopher M.
No associations
LandOfFree
Pseudoscalar flavor-singlets and staggered fermions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Pseudoscalar flavor-singlets and staggered fermions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pseudoscalar flavor-singlets and staggered fermions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-634097