Filters: Date: "2003-05" Collection: ir_uspace
1 - 25 of 7
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
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DeTar, Carleton | Chiral logs with staggered fermions | We compute chiral logarithms in the presence of "taste" symmetry breaking of staggered fermions. The lagrangian of Lee and Sharpe is generalized and then used to calculate the logs in π and K masses. We correct an error in Ref. [1]; the issue turns out to have implications for the comparison with ... | Staggered fermions; Chiral logs | 2003-05 |
| 2 |
 |
DeTar, Carleton | Exotic hybrid mesons from improved Kogut-Susskind fermions | We summarize our measurement of the mass of the exotic 1−+ hybrid meson using an improved Kogut-Susskind action. We show results from both quenched and dynamical quark simulations and compare with results from Wilson quarks. Extrapolation of these results to the physical quark mass allows compar... | Chromomagnetic field; Kogut-Susskind fermions; Wilson quarks | 2003-05 |
| 3 |
 |
Furse, Cynthia M. | Frequency-domain reflectometery for on-board testing of aging aircraft wiring | Aging aircraft wiring poses a significant safety threat and has been implicated in losses of both military and commercial aircraft. This paper describes the conceptual design and function of a "smart wiring system" based on a low-cost frequency-domain reflectometer (FDR) that can be used to test th... | Frequency domain reflectometry; Aging wiring; On board testing | 2003-05 |
| 4 |
 |
DeTar, Carleton | Heavy-light meson decay constants with N f = 3 | During the past year the MILC Collaboration has continued its study of heavy-light meson decay constants with three dynamical quarks. Calculations have been extended to a second lattice spacing of about 0.09 fm. At this lattice spacing, there are results in the quenched approximation and for thr... | Dynamical quarks | 2003-05 |
| 5 |
 |
DeTar, Carleton | Light hadron properties with improved staggered quarks | Preliminary results from simulations with 2+1 dynamical quark flavors at a lattice spacing of 0.09 fm are combined with earlier results at a = 0.13 fm. We examine the approach to the continuum limit and investigate the dependence of the pseudoscalar masses and decay constants as the sea and valence... | Staggered quarks | 2003-05 |
| 6 |
 |
DeTar, Carleton | Static hybrid quarkonium potential with improved staggered quarks | We are studying the effects of light dynamical quarks on the excitation energies of a flux tube between a static quark and antiquark. We report preliminary results of an analysis of the ground state potential and the ∑g′+ and Πu potentials. We have measured these potentials on closely matched... | Quarkonium; Staggered quarks; Flux tube | 2003-05 |
| 7 |
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DeTar, Carleton | Topological susceptibility with the improved Asqtad action | As a test of the chiral properties of the improved Asqtad (staggered fermion) action, we have been measuring the topological susceptibility as a function of quark masses for 2 + 1 dynamical flavors. We report preliminary results, which show reasonable agreement with leading order chiral perturbatio... | Topological cbarge; Staggered fermions | 2003-05 |
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