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Creator | Title | Description | Subject | Date |
1 |
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DeTar, Carleton | Assorted weak matrix elements involving the bottom quark | As part of a larger project to estimate the fB decay constant, we are recalculating fstatic B using a variational smearing method in an effort to improve accuracy. Preliminary results for the static BB parameter and HQET two point functions are also presented. | Bottom quark; Decay constants; HQET; Effective field theory | 1997-02 |
2 |
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DeTar, Carleton | Exotic hybrid mesons with light quarks | Hybrid 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 quarks | 1997-02 |
3 |
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DeTar, Carleton | Finite temperature lattice QCD with clover fermions | We report on our simulation of finite temperature lattice QCD with two flavors of O(a) Symanzik-improved fermions and O(a2) Symanzik-improved glue. Our thermodynamic simulations were performed on an 83 × 4 lattice, and we have performed complementary zero temperature simulations on an 83 × 16 la... | Wilson quarks; Clover fermions | 1997-02 |
4 |
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DeTar, Carleton | Improving flavor symmetry in the Kogut-Susskind hadron spectrum | We study the effect of modifying the coupling of Kogut-Susskind quarks to the gauge field by replacing the link matrix in the quark action by a ‘‘fat link,'' or sum of link plus three-link paths. Flavor symmetry breaking, determined by the mass difference between the Goldstone and non-Goldston... | Kogut-Susskind quarks; Flavor symmetry; Fat links | 1997-02 |
5 |
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Gondolo, Paolo | Indirect neutralino detection rates in neutrino telescopes | Neutralinos annihilating in the center of the Sun or the Earth may give rise to a detectable signal of neutrinos. We derive the indirect detection rates for neutrino telescopes in the minimal supersymmetric extension of the standard model. We show that even after imposing all phenomenological and e... | Neutralinos; Neutrino telescopes; Relic density; Annihilations | 1997-02 |
6 |
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DeTar, Carleton | Recent 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 spectrum | 1997-02 |
7 |
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DeTar, Carleton | Thermodynamics 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 symmetry | 1997-02 |
8 |
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DeTar, Carleton | Update on fB | We describe the current status of the MILC collaboration computation of fB, fBs , fD, fDs and their ratios. Progress over the past year includes: better statistics and plateaus at _x000C_β = 6.52 (quenched), β_x000C_ = 5.6 (NF = 2) and β_x000C_ = 5.445 (NF = 2), new runs with a wide range of dyn... | Decay constants; Wilson quarks | 1997-02 |