Zobrazeno 1 - 10
of 194
pro vyhledávání: '"Hornbostel, K."'
Autor:
Davies, C. T. H., Hornbostel, K., Komijani, J., Koponen, J., Lepage, G. P., Lytle, A. T., McNeile, C.
Publikováno v:
Phys. Rev. D 100, 034506 (2019)
We derive the Operator Product Expansion whose vacuum expectation value gives the time-moments of the pseudoscalar heavy-light current-current correlator up to and including terms in $\alpha_s^2$ multiplying $\langle\overline{\psi}\psi\rangle/M^3$ an
Externí odkaz:
http://arxiv.org/abs/1811.04305
Publikováno v:
Phys. Rev. D 91, 074514 (2015)
We determine the decay rate to leptons of the ground-state $\Upsilon$ meson and its first radial excitation in lattice QCD for the first time. We use radiatively-improved NRQCD for the $b$ quarks and include $u$, $d$, $s$ and $c$ quarks in the sea wi
Externí odkaz:
http://arxiv.org/abs/1408.5768
Autor:
Davies, C. T. H., Donald, G. C., Dowdall, R. J., Koponen, J., Follana, E., Hornbostel, K., Lepage, G. P., McNeile, C.
We show results from calculations in full lattice QCD of the mass, leptonic width and radiative decay rate to eta_c of the J/psi meson. These provide few % tests of QCD. Another (1.5%) test comes from comparison of time-moments of the vector charmoni
Externí odkaz:
http://arxiv.org/abs/1301.7203
Autor:
Davies, C. T. H., McNeile, C., Bazavov, A., Dowdall, R. J., Hornbostel, K., Lepage, G. P., Trottier, H.
We determine the strange and light quark condensates in full lattice QCD for the first time. This is done by direct calculation of the expectation value of the trace of the quark propagator followed by subtraction of the appropriate perturbative cont
Externí odkaz:
http://arxiv.org/abs/1301.7204
Autor:
Hornbostel, K., Nguyen, D., Bourcier, W., Knipe, J., Worthington, M., McCoy, S., Stolaroff, J.
Publikováno v:
In Applied Energy 1 February 2019 235:1192-1204
Autor:
McNeile, C., Bazavov, A., Davies, C. T. H., Dowdall, R. J., Hornbostel, K., Lepage, G. P., Trottier, H. D.
We determine the strange quark condensate from lattice QCD for the first time and compare its value to that of the light quark and chiral condensates. The results come from a direct calculation of the expectation value of the trace of the quark propa
Externí odkaz:
http://arxiv.org/abs/1211.6577
Autor:
Donald, G. C., Davies, C. T. H., Dowdall, R. J., Follana, E., Hornbostel, K., Koponen, J., Lepage, G. P., McNeile, C.
We calculate the J/{\psi} mass, leptonic width and radiative decay rate to \gamma \eta_c from lattice QCD including u, d and s quarks in the sea for the first time. We use the Highly Improved Staggered Quark formalism and nonperturbatively normalised
Externí odkaz:
http://arxiv.org/abs/1208.2855
We determine masses and decay constants of heavy-heavy and heavy-charm pseudoscalar mesons as a function of heavy quark mass using a fully relativistic formalism known as Highly Improved Staggered Quarks for the heavy quark. We are able to cover the
Externí odkaz:
http://arxiv.org/abs/1207.0994
We illustrate a technique for fitting lattice QCD correlators to sums of exponentials that is significantly faster than traditional fitting methods --- 10--40 times faster for the realistic examples we present. Our examples are drawn from a recent an
Externí odkaz:
http://arxiv.org/abs/1111.1363
We present a new determination of the $B_s$ leptonic decay constant from lattice QCD simulations that use gluon configurations from MILC and a highly improved discretization of the relativistic quark action for both valence quarks. Our result, $f_{B_
Externí odkaz:
http://arxiv.org/abs/1110.4510