Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Oktay, M. B."'
Autor:
Bazavov, A., Bernard, C., Bouchard, C., DeTar, C., Du, D., El-Khadra, A. X., Foley, J., Freeland, E. D., Gámiz, E., Gottlieb, Steven, Heller, U. M., Kim, J., Komijani, J., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Mohler, D., Neil, E. T., Oktay, M. B., Qiu, S., Simone, J. N., Sugar, R. L., Toussaint, D., Van de Water, R. S., Zhou, R.
We present a study of the $D$ and $B$ leptonic decay constants on the MILC $N_f=2+1$ asqtad gauge ensembles using asqtad-improved staggered light quarks and clover heavy quarks in the Fermilab interpretation. Our previous analysis \cite{Bazavov:2011a
Externí odkaz:
http://arxiv.org/abs/1403.6796
Autor:
Liu, Yuzhi, Zhou, Ran, Bailey, Jon A., Bazavov, A., Bernard, C., Bouchard, C. M., DeTar, C., Du, Daping, El-Khadra, A. X., Foley, J., Freeland, E. D., Gámiz, E., Gottlieb, Steven, Heller, U. M., Jain, R. D., Kim, Jongjeong, Kronfeld, A. S., Levkova, J. Laiho L., Mackenzie, P. B., Meurice, Y., Mohler, D., Neil, E. T., Oktay, M. B., Qiu, Si-Wei, Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S.
Publikováno v:
PoS (LATTICE 2013) 386
We calculate the form factors for the semileptonic decays $B_s\to K\ell\nu$ and $B\to K\ell\ell$ with lattice QCD. We work at several lattice spacings and a range of light quark masses, using the MILC 2+1-flavor asqtad ensembles. We use the Fermilab
Externí odkaz:
http://arxiv.org/abs/1312.3197
Autor:
Bazavov, A., Bernard, C., Bouchard, C., DeTar, C., Du, D., El-Khadra, A. X., Foley, J., Freeland, E. D., Gámiz, E., Gottlieb, Steven, Heller, U. M., Kim, J., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Neil, E. T., Oktay, M. B., Qiu, Si-Wei, Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S., Zhou, Ran
Publikováno v:
Phys. Rev. Lett. 112, 112001 (2014)
We calculate the kaon semileptonic form factor $f_+(0)$ from lattice QCD, working, for the first time, at the physical light-quark masses. We use gauge configurations generated by the MILC collaboration with $N_f=2+1+1$ flavors of sea quarks, which i
Externí odkaz:
http://arxiv.org/abs/1312.1228
Autor:
Gámiz, E., Bazavov, A., Bernard, C., Bouchard, C., DeTar, C., Du, D., El-Khadra, A. X., Foley, J., Freeland, E. D., Gottlieb, Steven, Heller, U. M., Kim, J., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Neil, E. T., Oktay, M. B., Qiu, Si-Wei, Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S., Zhou, Ran
Publikováno v:
PoS(LATTICE 2013)395
We present results for the form factor $f_+^{K \pi}(0)$, needed to extract the CKM matrix element $|V_{us}|$ from experimental data on semileptonic $K$ decays, on the HISQ $N_f=2+1+1$ MILC configurations. The HISQ action is also used for the valence
Externí odkaz:
http://arxiv.org/abs/1311.7264
Autor:
Bazavov, A., Bernard, C., Bouchard, C. M., DeTar, C., Du, Daping, El-Khadra, A. X., Foley, J., Freeland, E. D., Gámiz, E., Gottlieb, Steven, Heller, U. M., Kim, Jongjeong, Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Neil, E. T., Oktay, M. B., Qiu, Si-Wei, Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S., Zhou, Ran
Using staggered fermions and twisted boundary conditions, we calculate the K meson semileptonic decay vector form factor at zero momentum transfer. The HISQ formulation is used for the valence quarks, while the sea quarks are simulated with the asqta
Externí odkaz:
http://arxiv.org/abs/1212.4993
Autor:
Aarts, G., Allton, C., Kelly, A., Skullerud, J. -I., Kim, S., Harris, T., Ryan, S. M., Lombardo, M. P., Oktay, M. B., Sinclair, D. K.
We study the temperature dependence of bottomonium for temperatures in the range 0.4 Tc < T < 2.1 Tc, using non-relativistic dynamics for the bottom quark and full relativistic lattice QCD simulations for Nf=2 light flavors. We consider the behaviour
Externí odkaz:
http://arxiv.org/abs/1212.4368
Autor:
Gamiz, E., Bailey, J. A., Bazavov, A., Bernard, C., Bouchard, C., DeTar, C., Du, D., El-Khadra, A. X., Foley, J., Freeland, E. D., Gottlieb, Steven, Heller, U. M., Kim, J., Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Neil, E. T., Oktay, M. B., Qiu, Si-Wei, Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S., Zhou, R.
We report on the status of our kaon semileptonic form factor calculations using the highly-improved staggered quark (HISQ) formulation to simulate the valence fermions. We present results for the form factor f_+^{K \pi}(0) on the asqtad N_f=2+1 MILC
Externí odkaz:
http://arxiv.org/abs/1211.0751
Autor:
Bailey, Jon A., Bazavov, A., Bernard, C., Bouchard, C. M., DeTar, C., Du, Daping, El-Khadra, A. X., Foley, J., Freeland, E. D., Gamiz, E., Gottlieb, Steven, Heller, U. M., Kim, Jongjeong, Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Meurice, Y., Neil, E. T., Oktay, M. B., Qiu, Si-Wei, Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S., Zhou, Ran
The semileptonic decay channel B -> D tau nu is sensitive to the presence of a scalar current, such as that mediated by a charged-Higgs boson. Recently the BaBar experiment reported the first observation of the exclusive semileptonic decay B -> D tau
Externí odkaz:
http://arxiv.org/abs/1206.4992
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:
Bailey, Jon A., Bazavov, A., Bernard, C., Bouchard, C. M., DeTar, C., Du, Daping, El-Khadra, A. X., Foley, J., Freeland, E. D., Gamiz, E., Gottlieb, Steven, Heller, U. M., Kim, Jongjeong, Kronfeld, A. S., Laiho, J., Levkova, L., Mackenzie, P. B., Meurice, Y., Neil, E., Oktay, M. B., Qiu, Si-Wei, Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S., Zhou, Ran
We calculate form-factor ratios between the semileptonic decays \bar{B}->D^+\ell^-\bar{\nu} and \bar{B}_s->D_s^+\ell^-\bar{\nu} with lattice QCD. These ratios are a key theoretical input in a new strategy to determine the fragmentation fractions of t
Externí odkaz:
http://arxiv.org/abs/1202.6346