Zobrazeno 1 - 10
of 267
pro vyhledávání: '"Evans, R T"'
Autor:
Bazavov, A., Bernard, C., Bouchard, C. M., DeTar, C., Di Pierro, M., El-Khadra, A. X., Evans, R. T., Freeland, E. D., Gamiz, E., Gottlieb, Steven, Heller, U. M., Hetrick, J. E., Jain, R., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Neil, E. T., Oktay, M. B., Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S.
We study SU(3)-breaking effects in the neutral B_d-\bar B_d and B_s-\bar B_s systems with unquenched N_f=2+1 lattice QCD. We calculate the relevant matrix elements on the MILC collaboration's gauge configurations with asqtad-improved staggered sea qu
Externí odkaz:
http://arxiv.org/abs/1205.7013
Autor:
Neil, E. T., Bailey, Jon A., Bazavov, A., Bernard, C., Bouchard, C. M., DeTar, C., Di Pierro, M., El-Khadra, A. X., Evans, R. T., Freeland, E., Gamiz, E., Gottlieb, Steven, Heller, U. M., Hetrick, J. E., Jain, R., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Oktay, M. B., Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S.
We give an update on simulation results for the decay constants f_B, f_{B_s}, f_D and f_{D_s}. These decay constants are important for precision tests of the standard model, in particular entering as inputs to the global CKM unitarity triangle fit. T
Externí odkaz:
http://arxiv.org/abs/1112.3978
Autor:
Bazavov, A., Bernard, C., Bouchard, C. M., DeTar, C., Di Pierro, M., El-Khadra, A. X., Evans, R. T., Freeland, E. D., Gamiz, E., Gottlieb, Steven, Heller, U. M., Hetrick, J. E., Jain, R., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Neil, E. T., Oktay, M. B., Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S.
Publikováno v:
Phys. Rev. D 85, 114506 (2012) [37 pages]
We calculate the leptonic decay constants of B_{(s)} and D_{(s)} mesons in lattice QCD using staggered light quarks and Fermilab bottom and charm quarks. We compute the heavy-light meson correlation functions on the MILC asqtad-improved staggered gau
Externí odkaz:
http://arxiv.org/abs/1112.3051
Autor:
Bernard, C., DeTar, C., Di Pierro, M., El-Khadra, A. X., Evans, R. T., Freeland, E. D., Gámiz, E., Gottlieb, Steven, Heller, U. M., Hetrick, J. E., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S.
Publikováno v:
Phys.Rev.D83:034503,2011
We report the non-perturbative tuning of parameters--- kappa_c, kappa_b, and kappa_crit ---that determine the heavy-quark mass in the Fermilab action. This requires the computation of the masses of Ds^(*) and Bs^(*) mesons comprised of a Fermilab hea
Externí odkaz:
http://arxiv.org/abs/1003.1937
Autor:
Bernard, C., DeTar, C., Di Pierro, M., El-Khadra, A. X., Evans, R. T., Freeland, E. D., Gamiz, E., Gottlieb, Steven, Heller, U. M., Hetrick, J. E., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Okamoto, M., Oktay, M. B., Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S.
Publikováno v:
Phys.Rev.D80:034026,2009
Comparisons of lattice-QCD calculations of semileptonic form factors with experimental measurements often display two sets of points, one each for lattice QCD and experiment. Here we propose to display the output of a lattice-QCD analysis as a curve
Externí odkaz:
http://arxiv.org/abs/0906.2498
Autor:
Bernard, C., DeTar, C., Di Pierro, M., El-Khadra, A. X., Evans, R. T., Freeland, E. D., Gamiz, E., Gottlieb, Steven, Heller, U. M., Hetrick, J. E., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Simone, J., Sugar, R., Toussaint, D., Van de Water, R. S.
Publikováno v:
PoS LATTICE2008:278,2008
We present an update of our calculations of the decay constants of the D, D_s, B, and B_s mesons in unquenched 2+1 flavor QCD. We use the MILC library of improved staggered gauge ensembles at lattice spacings 0.09, 0.12, and 0.15 fm, clover heavy qua
Externí odkaz:
http://arxiv.org/abs/0904.1895
Autor:
Bailey, Jon A., Bernard, C., DeTar, C., Di Pierro, M., El-Khadra, A. X., Evans, R. T., Freeland, E. D., Gamiz, E., Gottlieb, Steven, Heller, U. M., Hetrick, J. E., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Okamoto, M., Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S.
Publikováno v:
Phys.Rev.D79:054507,2009
We calculate the form factor f_+(q^2) for B-meson semileptonic decay in unquenched lattice QCD with 2+1 flavors of light sea quarks. We use Asqtad-improved staggered light quarks and a Fermilab bottom quark on gauge configurations generated by the MI
Externí odkaz:
http://arxiv.org/abs/0811.3640
Autor:
Bernard, C., DeTar, C., Di Pierro, M., El-Khadra, A. X., Evans, R. T., Freeland, E. D., Gamiz, E., Gottlieb, Steven, Heller, U. M., Hetrick, J. E., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Okamoto, M., Simone, J., Sugar, R., Toussaint, D., Van de Water, R. S.
Publikováno v:
Phys.Rev.D79:014506,2009
We present the first lattice QCD calculation of the form factor for B-> D* l nu with three flavors of sea quarks. We use an improved staggered action for the light valence and sea quarks (the MILC configurations), and the Fermilab action for the heav
Externí odkaz:
http://arxiv.org/abs/0808.2519
Autor:
Moorby, J. M.1 jon.moorby@bbsrc.ac.uk, Evans, R. T.1, Scollan, N. D.1, MacRae, J. C.2, Theodorou, M. K.1
Publikováno v:
Grass & Forage Science. Mar2006, Vol. 61 Issue 1, p52-59. 8p. 4 Charts, 1 Graph.
Autor:
Bazavov, A., Bernard, C., Bouchard, C. M., DeTar, C., Di Pierro, M., El-Khadra, A. X., Evans, R. T., Freeland, E. D., Gamiz, E., Gottlieb, Steven, Heller, U. M., Hetrick, J. E., Jain, R., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Neil, E. T., Oktay, M. B., Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S.
We study SU(3)-breaking effects in the neutral B_d-\bar B_d and B_s-\bar B_s systems with unquenched N_f=2+1 lattice QCD. We calculate the relevant matrix elements on the MILC collaboration's gauge configurations with asqtad-improved staggered sea qu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3abd38182c95e5b659d4fcbbbb6db16