[PDF] Top 20 Hadron Spectrum from Lattice QCD

... Abstract. In order to claim that we understand strong interactions quantitatively, we should be able to derive key properties of hadrons, such as their mass, “ab initio” from the interaction of quarks and gluons. ... See full document

... the Hadron Spectrum Collaboration found states with exotic quantum numbers and showed that these, along with other non-exotic states, could be identified as hybrid mesons ...the spectrum and the ... See full document

... In lattice calculations, the theory is discretised on a finite hypercubic grid and the full rotational symmetry of the continuum is reduced to the symmetry group of a ...The Hadron Spectrum ... See full document

... anisotropic lattice spacings, using a tadpole- improved Wilson clover quark action for the light and strange quarks and a tadpole- and Symanzik-improved gauge ...the lattice parameters was performed by the ... See full document

... Mills (YM) theory, which is the leading order in the e ff ective theory at low energy. We can afford very small lattice spacings down to a = 0.023 fm and control the continuum limit. We computed in both theories ... See full document

... continuum QCD, so far the most successful approaches are based on QCD’s equations of motion in Euclidean space, given by the infinite tower of coupled Dyson-Schwinger integral equations [26, 30, 31], and on the ... See full document

... the spectrum of states above decay thresholds - which includes exotic and hybrid states - is to demonstrate that lattice methods for extracting energies and spin identification are working well, yielding ... See full document

... the spectrum of mesons and baryons using a first-principles numerical approach to QCD known as lattice ...In lattice QCD the non-perturbative field theory is considered on a finite ... See full document

... Lattice QCD has been widely used for the accurate computation of ground and excited state energies of mesons and baryons - see, for example, [2][3] for state of the art results for the charmonium ... See full document

... The correlators used to extract the hadron masses are listed in Table I; for further details see @ 17 # . We computed meson correlators using quarks degenerate and nondegener- ate in mass, giving three possible ... See full document

... Recent lattice studies of charm spectroscopy include [3, 4] and progress was reported by a number of groups at this conference [5, 6, ...charmonium spectrum, including radially and orbitally excited ... See full document

... review lattice calculations of the elementary Greens functions of QCD with a special emphasis on the Landau ...These lattice results have been of interest to continuum approaches to QCD over ... See full document

... We would like to thank Antonios Athenodorou and Haris Panagopoulos for checking the numbers in Eq. (22). The numerical calculations have been performed on the Hitachi SR8000 at LRZ (Munich), on the Cray T3E at EPCC ... 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

... of QCD, the gauge-field theory of quarks and glu- ...constructed from quark-antiquark pairs of any flavor or even from states of pure glue, and in general the QCD eigenstates will be ... See full document

... of lattice QCD is more desirable for such searches and in the past year, two lattice studies [4–6] have identified a promising channel with the flavor content ud b ¯ ... See full document

... extracted from a simultaneous and correlated fit to the two point correlation function and the e ff ective mass derivatives given by ...the spectrum are ... See full document

... The potential V ( r ) without the constant energy shift E in Eq. (3) for the I = 0 ( I = 1) KN state is shown in Fig. 4 (Fig. 5). These potentials are also calculated by us- ing the data at t − t 0 = 8. As expected ... See full document

... In Lattice Quantum Chromodynamics, the action of QCD is regularized by a 4-dimensional Euclidean space-time ...Most Lattice QCD calculations work in the isospin limit, and the light up and ... See full document

... fermion lattice QCD cal- culations at light quark ...extrapolation from the region in which calculations are able to be performed — that is, the region of unphysically heavy quarks — to lighter ... See full document