Bing An Li
(University of Kentucky)
31/07/2009, 14:00
Perturbative and Non-perturbative QCD
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\title{New limit of Pion Form Factor at very Large $Q^2$ }
\author{Bing An Li,$\;$Department of Physics, Univ. of Kentucky, Lexington,USA}
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In this talk a new...
doug toussaint
(University of Arizona)
31/07/2009, 14:25
Perturbative and Non-perturbative QCD
We use lattice gauge theory including the effects of light and strange
dynamical quarks to calculate the "strange quark content of the nucleon",
<N| s s_bar |N>, which is important for interpreting
the results of some dark matter detection experiments. The method
is to evaluate quark-line disconnected correlations on the MILC
lattice ensembles, which include the effects of dynamical...
Prof.
Mike Sokoloff
(University of Cincinnati)
31/07/2009, 14:50
Perturbative and Non-perturbative QCD
Two-photon processes produced at e+e- colliders via the reaction e+ e-
--> e+ e- gamma gamma(*) --> e+ e- X, provide important experimental
data for the study of hadronic spectra and testing QCD predictions.
We report here on recent results in a number of these channels that are
obtained at the PEP-II collider with the BABAR detector. The gamma
gamma --> pi0pi0, pi0eta, and etaeta cross...
Taekoon Lee
(Kunsan National University)
31/07/2009, 15:15
Perturbative and Non-perturbative QCD
We show that the Borel resummed perturbative contribution of the stochastic
perturbation theory and dimension-4 gluon condenstate can acccount for the
average plaquette data, and the resulting gluon condensate of the
$\text{SU}(3)$ pure Yang-Mills theory is determined to be
$\langle \frac{\alpha_s}{\pi} GG \rangle\approx0.13\,\, {\rm GeV}^4$.
A critical review of the existing procedure...
Daekyoung Kang
(The Ohio State University)
31/07/2009, 15:40
Perturbative and Non-perturbative QCD
The leading-order parton processes that produce a dilepton with large transverse momentum predict that the transverse polarization should increase with the transverse momentum for almost any choice of the quantization axis for the spin of the virtual photon. The rate of approach to complete transverse polarization depends on the choice of spin quantization axis. We propose axes that optimize...
Prof.
Joe Kiskis
(UC Davis)
31/07/2009, 16:30
Perturbative and Non-perturbative QCD
Continuum reduction and Monte Carlo simulation are used to calculate the heavy quark potential and the string tension in large N Yang-Mills theory in three and four dimensions in the confined phase. In addition, the spatial string tension in the 2+1 high T phase is also measured. With reduction, the potential can be calculated out to separations larger than the lattice extent.
Christian Sturm
(Brookhaven National Laboratory)
31/07/2009, 16:55
Perturbative and Non-perturbative QCD
Quark masses are fundamental parameters of QCD. Their accurate
determination is thus a mandatory task. Light quark masses can be
determined non-perturbatively through lattice simulations in a given
renormalization scheme, e.g. a momentum subtraction scheme. The MSbar
scheme is not directly amenable in lattice simulations since it is
closely related to dimensional regularization. To obtain...