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1 DeTar, CarletonLeptonic decay constants fDs and fD in three flavor lattice QCDWe determine the leptonic decay constants fDs and fD in three flavor unquenched lattice QCD. We use O(a2)-improved staggered light quarks and O(a)-improved charm quarks in the Fermilab heavy quark formalism. Our preliminary results, based upon an analysis at a single lattice spacing, are fDs = 263+5...Decay constants2005-03
2 DeTar, CarletonThermodynamics with 3 and 2+1 flavors improved staggered quarksWe present preliminary results [1] from exploring the phase diagram of finite temperature QCD with three degenerate flavors and with two light flavors and the mass of the third held approximately at the strange quark mass. We use an order _x000B_2 sa2, a4 Symanzik improved gauge action and an orde...Staggered quarks2002-03
3 DeTar, CarletonTopological susceptibility with three flavors of staggered quarksAs one test of the validity of the staggered-fermion fourth-root determinant trick, we examine the suppression of the topological susceptibility of the QCD vacuum in the limit of small quark mass. The suppression is sensitive to the number of light sea quark flavors. Our study is done in the presenc...Staggered quarks; Chiral perturbation2005-03
4 DeTar, CarletonExcited states in staggered meson propagatorsWe report on preliminary results from multi-particle fits to meson propagators with three flavors of light dynamical quarks. We are able to measure excited states in propagators with pion quantum numbers, which we interpret as the pion 2S state, and argue is evidence of locality of the action. In t...Excited states; Meson propagators2004-03
5 DeTar, CarletonHeavy-light decay constants using clover valence quarks and three flavors of dynamical improved staggered quarksStarting in 2001, the MILC Collaboration began a large scale calculation of heavy-light meson decay constants using clover valence quarks on ensembles of three flavor configurations. For the coarse configurations, with a = 0.12 fm, eight combinations of dynamical light and strange quarks have been ...Decay constants; Clover valence quarks; Staggered quarks2005-03
6 DeTar, CarletonHeavy-light decay constants: conclusions from the Wilson actionWe report on the results of a MILC collaboration calculation of fB, fBs , fD, fDs and their ratios. We discuss the most important errors in more detail than we have elsewhere.Decay constants; Wilson action; Staggered quarks1999-03
7 DeTar, CarletonPhase diagram of high temperature QCD with three flavors of improved staggered quarksWe report on progress in our study of high temperature QCD with three flavors of improved staggered quarks. Simulations are being carried out with three degenerate quarks with masses less than or equal to the strange quark mass, ms, and with degenerate up and down quarks with masses in the range 0...Staggered quarks2004-03
8 DeTar, CarletonQuark loop effects in semileptonic form factors for heavy-light mesonsWe present preliminary results of a determination of the semileptonic form factor for the decay of pseudoscalar heavy-light mesons to pseudoscalar light-light mesons in full QCD. In this preliminary study we focus on the effects of dynamical quark loops. Accordingly, we compare results of simulati...Semileptonic decay; Form factors; Quark loops; Wilson quarks2004-03
9 DeTar, CarletonHeavy-light decay constants with three dynamical flavorsWe present preliminary results for the heavy-light leptonic decay constants in the presence of three light dynamical flavors. We generate dynamical configurations with improved staggered and gauge actions and analyze them for heavy-light physics with tadpole improved clover valence quarks. When th...Leptonic decay; Decay constants2002-03
10 DeTar, CarletonSemileptonic D → π/K and B → π/D decays in 2+1 flavor lattice QCDWe present results for form factors of semileptonic decays of D and B mesons in 2+1 flavor lattice QCD using the MILC gauge configurations. With an improved staggered action for light quarks, we successfully reduce the systematic error from the chiral extrapolation. The results for D decays are in a...Semileptonic decay2005-03
11 DeTar, CarletonThree flavor QCD at high temperaturesWe have continued our study of the phase diagram of high temperature QCD with three flavors of improved staggered quarks. We are performing simulations with three degenerate quarks with masses less than or equal to the strange quark mass ms and with degenerate up and down quarks with masses mu,d le...Quark number; Polyakov loop2005-03
12 DeTar, CarletonChiral logs with staggered fermionsWe 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 logs2003-05
13 DeTar, CarletonExotic hybrid mesons with light quarksHybrid mesons, made from a quark, an antiquark and gluons, can have quantum numbers inaccessible to conventional quark-antiquark states. Confirmation of such states would give information on the role of "dynamical" color in low energy QCD. We present preliminary results for hybrid meson masses using...Hybrid mesons; Kogut-Susskind quarks; Wilson quarks1997-02
14 DeTar, CarletonRecent MILC spectrum results*We report on results from three spectrum calculations with staggered quarks: 1) a quenched calculation with the standard action for the gluons and quarks; 2) a quenched calculation with improved actions for both the gluons and quarks; and 3) a calculation with two flavors of dynamical quarks using...Staggered quarks; Hadron spectrum1997-02
15 DeTar, CarletonResults for light pseudoscalars from three-flavor simulationsWe compute pseudoscalar meson masses and decay constants in partially quenched QCD with three dynamical flavors of improved staggered quarks. Fitting the lattice data to staggered chiral perturbation theory (SX_x001F_PT) forms and extrapolating in quark mass and lattice spacing, we find: frr = 129...Pseudoscalars; Decay constants; Staggered quarks2005-03
16 DeTar, CarletonThermodynamics for two flavor QCD*We conclude our analysis of the Nt = 6 equation of state (EOS) for two flavor QCD, first described at last year's conference. We have obtained new runs at amq = 0.025 and improved runs at amq = 0.0125. The results are extrapolated to mq = 0, and we extract the speed of sound as well. We also present...Phase transitions; Quark-gluon plasma; Chiral symmetry1997-02
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