Zobrazeno 1 - 10
of 28
pro vyhledávání: '"SESAM Collaboration"'
Autor:
SESAM Collaboration, Bali, Gunnar S., Neff, Hartmut, Duessel, Thomas, Lippert, Thomas, Schilling, Klaus
Publikováno v:
Phys.Rev.D71:114513,2005
We numerically investigate the transition of the static quark-antiquark string into a static-light meson-antimeson system. Improving noise reduction techniques, we are able to resolve the signature of string breaking dynamics for n_f=2 lattice QCD at
Externí odkaz:
http://arxiv.org/abs/hep-lat/0505012
Autor:
LHPC Collaboration, SESAM Collaboration, Negele, J. W., Brower, R. C., Dreher, P., Edwards, R., Fleming, G., Hagler, Ph., Lippert, Th., Pochinsky, A. V., Renner, D. B., Richards, D., Schilling, K., Schroers, W.
Publikováno v:
Nucl.Phys.Proc.Suppl.129:910-912,2004
The lowest three moments of generalized parton distributions are calculated in full QCD and provide new insight into the behavior of nucleon electromagnetic form factors, the origin of the nucleon spin, and the transverse structure of the nucleon.
Externí odkaz:
http://arxiv.org/abs/hep-lat/0309060
Autor:
LHPC Collaboration, SESAM Collaboration, Dolgov, D., Brower, R., Capitani, S., Dreher, P., Negele, J. W., Pochinsky, A., Renner, D. B., Eicker, N., Lippert, Th., Schilling, K., Edwards, R. G., Heller, U. M.
Publikováno v:
Phys.Rev.D66:034506,2002
Moments of the quark density, helicity, and transversity distributions are calculated in unquenched lattice QCD. Calculations of proton matrix elements of operators corresponding to these moments through the operator product expansion have been perfo
Externí odkaz:
http://arxiv.org/abs/hep-lat/0201021
Autor:
SESAM Collaboration, Spitz, A., Hoeber, H., Eicker, N., Guesken, S., Lippert, Th., Schilling, K., Struckmann, T., Ueberholz, P., Viehoff, J.
Publikováno v:
Phys.Rev. D60 (1999) 074502
We estimate the QCD coupling constant from a lattice calculation of the bottomonium spectrum. The second order perturbative expansion of the plaquette expectation value is employed to determine alpha_S at a scale set by the 2S-1S and 1P-1S level spli
Externí odkaz:
http://arxiv.org/abs/hep-lat/9906009
Autor:
SESAM Collaboration, Spitz, A., Eicker, N., Guesken, S., Hoeber, H., Lacock, P., Lippert, T., Schilling, K., Struckmann, T., Ueberholz, P., Viehoff, J.
Publikováno v:
Nucl.Phys.Proc.Suppl. 73 (1999) 327-329
We estimate the strong coupling constant from the perturbative expansion of the plaquette. The scale is set by the 2S-1S and 1P-1S splittings in bottomonium which are computed in NRQCD on dynamical gauge configurations with nf=2 degenerate Wilson qua
Externí odkaz:
http://arxiv.org/abs/hep-lat/9809130
Autor:
SESAM-Collaboration, Güsken, S., Ueberholz, P., Viehoff, J., Eicker, N., Lacock, P., Lippert, T., Schilling, K., Spitz, A., Struckmann, Th.
Publikováno v:
Phys.Rev.D59:054504,1999
We calculate connected and disconnected contributions to the flavour singlet scalar density amplitude of the nucleon in a full QCD lattice simulation with $n_f=2$ dynamical Wilson fermions at $\beta=5.6$ on a $16^3 \times 32$ lattice. We find that bo
Externí odkaz:
http://arxiv.org/abs/hep-lat/9809066
Autor:
SESAM-Collaboration, Eicker, N., Glässner, U., Güsken, S., Hoeber, H., Lippert, Th., Ritzenhöfer, G., Schilling, K., Siegert, G., Spitz, A., Ueberholz, P., Viehoff, J.
We present recent results of SESAM's large scale lattice simulation of QCD with two dynamical flavours of Wilson fermions. The emphasis is on future prospects in the extraction of flavour-singlet matrix elements, i.e the pi-nucleon sigma term, with d
Externí odkaz:
http://arxiv.org/abs/hep-ph/9611464
Autor:
SESAM-Collaboration, Glaessner, U., Guesken, S., Hoeber, H., Lippert, Th., Ritzenhoefer, G., Schilling, K., Siegert, G., Spitz, A.
Publikováno v:
Nucl.Phys.Proc.Suppl. 53 (1997) 219-221
We present results from an analysis of the light spectrum and the decay constants f_{\pi} and f_V^{-1} in Full QCD with n_f=2 Wilson fermions at a coupling of beta=5.6 on a 16^3x32 lattice.
Comment: 3 pages, LaTeX with 4 eps figures, Talk presen
Comment: 3 pages, LaTeX with 4 eps figures, Talk presen
Externí odkaz:
http://arxiv.org/abs/hep-lat/9608083
Autor:
SESAM-Collaboration, Eicker, N., Glässner, U., Hoeber, S. Güsken H., Lippert, Th., Ritzenhöfer, G., Schilling, K., Spitz, G. Siegert A., Ueberholz, P., Viehoff, J.
Publikováno v:
Phys.Lett. B389 (1996) 720-726
In a full QCD lattice study with $N_f = 2$ Wilson fermions, we seek to optimize the signals for the disconnected contributions to the matrix element of flavour-singlet operators between nucleon states, which are indicative for sea quark effects. We d
Externí odkaz:
http://arxiv.org/abs/hep-lat/9608040
Autor:
SESAM-Collaboration, Glässner, U., Güsken, S., Hoeber, H., Lippert, Th., Luo, X., Ritzenhöfer, G., Schilling, K., Siegert, G.
Publikováno v:
Nucl.Phys.Proc.Suppl. 47 (1996) 386-393
First results of a recently started simulation of full QCD with two flavours of sea-quarks at a coupling of $\beta = 5.6$ on a $16^3 \times 32$ lattice are presented. Emphasis is laid on the statistical significance that can be achieved by an ``integ
Externí odkaz:
http://arxiv.org/abs/hep-lat/9510001