[PDF] Top 20 String breaking from Lattice QCD with Nf=2+1 dynamical fermions

... After the gauge field configurations have been generated, Wilson loops, hadron correlation functions and any other function of the gauge field are calculated on those configurations. These are the primary observables of ... See full document

... using lattice QCD with N f = 2 + 1 dynamical ...gluon string and systems of two separated static mesons, the first three energy levels are determined up to and beyond the distance ... See full document

... or QCD in the quenched approximation ...QQCD lattice studies which predicts the masses of lowest lying glueballs, such as the scalar, tensor, and pseudoscalar glueballs, are ranging from ... See full document

... of QCD vacuum was presented in [7], where the IR running of some gluon Green functions was asserted to be related to some properties of the instanton ...non-perturbative QCD community to the understanding ... See full document

... nucleon. From both a theoretical and experimental point of view, the electromagnetic form factors and axial charge of the nucleon are especially important: electromagnetic scattering processes are the most ... See full document

... stemming from their ...determined from experimental data to rather good ...determination from first principles might be desirable, since the interpretation of experimental data typically requires ... See full document

... comparable lattice spacing, and in the breaking of the confining flux tube as demonstrated by a nonzero expectation value for the spatial Polyakov loop op- ... See full document

... extracted from dynamical ...of dynamical quarks are beginning to deliver results, but the quark masses are still rather large, and the continuum limit is not easy to perform reliably, because only a ... See full document

... the lattice spacing of, say, a = 0.1 fm, the flavour breaking effects are substantial and are not ...staggered fermions with Wilson gauge action [25], one finds a similar size of the flavour ... See full document

... results from QCD sum rules [10] and from lattice simulations employing the quenched approximation [1, 11], which are in the range of 140 − 150 ... See full document

... recent lattice results from other ...results from RQCD, which employ Wilson Clover fermions with two dynamical quark flavors, as well as with the ones from ...obtained ... See full document

... where the expectation value over gauge configurations is implicit in the pictorial rep- resentation of the diagrams. The diagonal entries are given by the correlation functions for the string, the two static-light ... See full document

... of lattice QCD. Recent empirical observations [2] suggest the different topological sectors that contribute to the QCD vacuum are connected only weakly via the Markov transitions of most ... See full document

... Figure 1. Single time slices of P vortices on a 32 4 lattice. Both diagrams indicate the P plaquettes after maximal center gauge and center projection of field configurations at β = 1.8. The left diagram is ... See full document

... perform lattice field theory simulations of QCD with different numbers of light (massless) fermions to study the spectrum of bound states in the scalar and pseudoscalar channel, in particu- lar ... See full document

... = 1/2T, while the kernel, K(τ, ω), is independent of the ...figure 2. These simplifications result from replacing ω → 2m b + ω and taking the m b /T → ∞ ... See full document

... latest lattice calculations of the nucleon structure have been carried out with increasing ac- curacy ...the lattice results, especially for the electric-magnetic nucleon radii and the magnetic ... See full document

... A feature that occurs exclusively for flavour singlet mesons, is that there are two independent ways to link up the quarks and antiquarks between the initial and final state - as illustrated in fig. 3. Moreover, these ... See full document

... our results with the Wilson coefficients calculated in the MS-NDR scheme [17–19], we perform the renormaliza- tion in 3 steps. We start by obtaining the renormaliza- tion constants in four RI-SMOM schemes using the pro- ... See full document

... Abstract. The spectrum of hadron is mainly composed as shortly-lived states (resonance) that decay onto two or more hadrons. These resonances play an important role in a vari- ety of phenomenologically significant ... See full document