Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Wennekers, J."'
Autor:
Aoki, Y., Arthur, R., Blum, T., Boyle, P. A., Brömmel, D., Christ, N. H., Dawson, C., Izubuchi, T., Jung, C., Kelly, C., Kenway, R. D., Lightman, M., Mawhinney, R. D., Ohta, Shigemi, Sachrajda, C. T., Scholz, E. E., Soni, A., Sturm, C., Wennekers, J., Zhou, R.
Publikováno v:
Phys.Rev.D84:014503,2011
We determine the neutral kaon mixing matrix element $B_K$ in the continuum limit with 2+1 flavors of domain wall fermions, using the Iwasaki gauge action at two different lattice spacings. These lattice fermions have near exact chiral symmetry and th
Externí odkaz:
http://arxiv.org/abs/1012.4178
Autor:
Aoki, Y., Arthur, R., Blum, T., Boyle, P. A., Brommel, D., Christ, N. H., Dawson, C., Flynn, J. M., Izubuchi, T., Jin, X-Y., Jung, C., Kelly, C., Li, M., Lichtl, A., Lightman, M., Lin, M. F., Mawhinney, R. D., Maynard, C. M., Ohta, S., Pendleton, B. J., Sachrajda, C. T., Scholz, E. E., Soni, A., Wennekers, J., Zanotti, J. M., Zhou, R.
Publikováno v:
Phys.Rev.D83:074508,2011
We present physical results obtained from simulations using 2+1 flavors of domain wall quarks and the Iwasaki gauge action at two values of the lattice spacing $a$, ($a^{-1}$=\,1.73\,(3)\,GeV and $a^{-1}$=\,2.28\,(3)\,GeV). On the coarser lattice, wi
Externí odkaz:
http://arxiv.org/abs/1011.0892
Autor:
Allton, C., Antonio, D. J., Aoki, Y., Blum, T., Boyle, P. A., Christ, N. H., Cohen, S. D., Clark, M. A., Dawson, C., Donnellan, M. A., Flynn, J. M., Hart, A., Izubuchi, T., Juttner, A., Jung, C., Kennedy, A. D., Kenway, R. D., Li, M., Li, S., Lin, M. F., Mawhinney, R. D., Maynard, C. M., Ohta, S., Pendleton, B. J., Sachrajda, C. T., Sasaki, S., Scholz, E. E., Soni, A., Tweedie, R. J., Wennekers, J., Yamazaki, T., Zanotti, J. M.
Publikováno v:
Phys.Rev.D78:114509,2008
We have simulated QCD using 2+1 flavors of domain wall quarks on a $(2.74 {\rm fm})^3$ volume with an inverse lattice scale of $a^{-1} = 1.729(28)$ GeV. The up and down (light) quarks are degenerate in our calculations and we have used four values fo
Externí odkaz:
http://arxiv.org/abs/0804.0473
Publikováno v:
JHEP 0805:024,2008
We investigate two-point correlation functions of left-handed currents computed in quenched lattice QCD with the Neuberger-Dirac operator. We consider two lattice spacings a~0.09,0.12 fm and two different lattice extents L~ 1.5, 2.0 fm; quark masses
Externí odkaz:
http://arxiv.org/abs/0803.2772
Publikováno v:
JHEP 0805:043,2008
A new method to determine the low-energy couplings of the $\Delta S=1$ weak Hamiltonian is presented. It relies on a matching of the topological poles in $1/m^2$ of three-point correlators of two pseudoscalar densities and a four-fermion operator, me
Externí odkaz:
http://arxiv.org/abs/0802.3591
Publikováno v:
PoSLAT2007:356,2007
We discuss a new method to determine the low-energy couplings of the $\Delta S=1$ weak Hamiltonian in the $\epsilon$-regime. It relies on a matching of the topological poles in $1/m^2$ of three-point functions of two pseudoscalar densities and a four
Externí odkaz:
http://arxiv.org/abs/0710.5647
Publikováno v:
Phys.Rev.Lett.98:082003,2007
We compute the leading-order low-energy constants of the DeltaS=1 effective weak Hamiltonian in the quenched approximation of QCD with up, down, strange, and charm quarks degenerate and light. They are extracted by comparing the predictions of finite
Externí odkaz:
http://arxiv.org/abs/hep-ph/0607220
Autor:
Dimopoulos, P., Giusti, L., Hernandez, P., Palombi, F., Pena, C., Vladikas, A., Wennekers, J., Wittig, H.
Publikováno v:
Phys.Lett. B641 (2006) 118-124
We outline a general strategy for the non-perturbative renormalisation of composite operators in discretisations based on Neuberger fermions, via a matching to results obtained with Wilson-type fermions. As an application, we consider the renormalisa
Externí odkaz:
http://arxiv.org/abs/hep-lat/0607028
Publikováno v:
PoS LAT2005 (2005) 344
We present our preliminary results for three-point correlation functions involving the operators entering the $\Delta{S}=1$ effective Hamiltonian with an active charm quark, obtained using overlap fermions in the quenched approximation. This is the f
Externí odkaz:
http://arxiv.org/abs/hep-lat/0510033
We report on recent work on the determination of low-energy constants describing Delta{S}=1 weak transitions, in order to investigate the origins of the Delta{I}=1/2 rule. We focus on numerical techniques designed to enhance the statistical signal in
Externí odkaz:
http://arxiv.org/abs/hep-lat/0409031