Zobrazeno 1 - 10
of 337
pro vyhledávání: '"DI PIERRO, M."'
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:
Bazavov, A., Bernard, C., DeTar, C., Freeland, E. D., Gamiz, E., Gottlieb, Steven, Heller, U. M., Hetrick, J. E., El-Khadra, A. X., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Oktay, M. B., Di Pierro, M., Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S.
Publikováno v:
PoS LAT2009:249,2009
We present the leptonic decay constants fDs and fD+ computed on the MILC collaboration's 2+1 flavor asqtad gauge ensembles. We use clover heavy quarks with the Fermilab interpretation and improved staggered light quarks. The simultaneous chiral and c
Externí odkaz:
http://arxiv.org/abs/0912.5221
Autor:
Burch, T., DeTar, C., Di Pierro, M., El-Khadra, A. X., Freeland, E. D., Gottlieb, Steven, Kronfeld, A. S., Levkova, L., Mackenzie, P. B., Simone, J. N.
Publikováno v:
Phys.Rev.D81:034508,2010
We report on calculations of the charmonium and bottomonium spectrum in lattice QCD. We use ensembles of gauge fields with three flavors of sea quarks, simulated with the asqtad improved action for staggered fermions. For the heavy quarks we employ t
Externí odkaz:
http://arxiv.org/abs/0912.2701
Autor:
Bailey, Jon A., Bazavov, A., Bernard, C., Bouchard, C., DeTar, C., El-Khadra, A. X., Freeland, E. D., Freeman, W., Gamiz, E., Gottlieb, Steven, Heller, U. M., Hetrick, J. E., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Oktay, M. B., Di Pierro, M., Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S.
Publikováno v:
PoS LAT2009:250,2009
Lattice calculations of the form factors for the charm semileptonic decays D to K l nu and D to pi l nu provide inputs to direct determinations of the CKM matrix elements |V(cs)| and |V(cd)| and can be designed to validate calculations of the form fa
Externí odkaz:
http://arxiv.org/abs/0912.0214
Autor:
Burch, T., DeTar, C. E., Di Pierro, M., El-Khadra, A. X., Gottlieb, Steven, Kronfeld, A. S., Levkova, L., Mackenzie, P. B., Simone, J.
Publikováno v:
PoS LAT2009:115,2009
We present results from an ongoing lattice study of the lowest lying charmonium and bottomonium level splittings using the Fermilab heavy quark formalism. Our objective is to test the performance of this action on MILC-collaboration ensembles of (2+1
Externí odkaz:
http://arxiv.org/abs/0911.0361
Autor:
Gottlieb, Steven, Levkova, L., Di Pierro, M., El-Khadra, A., Kronfeld, A. S., Mackenzie, P. B., Simone, J.
Publikováno v:
PoS LAT2006:175,2006
We update results presented at Lattice 2005 on charmonium masses. New ensembles of gauge configurations with 2+1 flavors of improved staggered quarks have been analyzed. Statistics have been increased for other ensembles. New results are also availab
Externí odkaz:
http://arxiv.org/abs/0910.0048
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