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Author :
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (16 download)
Download or read book The Charmonium Spectrum on the Lattice written by and published by . This book was released on 1992 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christian Ehmann
Publisher :
ISBN 13 : 9783868450521
Total Pages : 116 pages
Book Rating : 4.4/5 (55 download)
Download or read book A Lattice QCD Calculation of the Charmonium Spectrum written by Christian Ehmann and published by . This book was released on 2010 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 34501 pages
Book Rating : 4.:/5 (727 download)
Download or read book Charmonium Excited State Spectrum in Lattice QCD. written by and published by . This book was released on 2008 with total page 34501 pages. Available in PDF, EPUB and Kindle. Book excerpt: Working with a large basis of covariant derivative-based meson interpolating fields we demonstrate the feasibility of reliably extracting multiple excited states using a variational method. The study is performed on quenched anisotropic lattices with clover quarks at the charm mass. We demonstrate how a knowledge of the continuum limit of a lattice interpolating field can give additional spin-assignment information, even at a single lattice spacing, via the overlap factors of interpolating field and state. Excited state masses are systematically high with respect to quark potential model predictions and, where they exist, experimental states. We conclude that this is most likely a result of the quenched approximation.
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ISBN 13 :
Total Pages : 94504 pages
Book Rating : 4.:/5 (727 download)
Download or read book Charmonium in Lattice QCD and the Non-relativistic Quark Model written by and published by . This book was released on 2008 with total page 94504 pages. Available in PDF, EPUB and Kindle. Book excerpt: We compare the results of a numerical lattice QCD calculation of the charmonium spectrum with the structure of a general non-relativistic potential model. To achieve this we form the non-relativistic reduction of derivative-based fermion bilinear interpolating fields used in lattice QCD calculations and compute their overlap with $c\bar{c}$ meson states at rest constructed in the non-relativistic quark model, providing a bound-state model interpretation for the lattice data. Essential gluonic components in the bound-states, usually called hybrids, are identified by considering interpolating fields that involve the gluonic field-strength tensor and which have zero overlap onto simple $c\bar{c}$ model states.
Download or read book Properties of Charmonium in Lattice QCD with 2+1 Flavors of Improved Staggered Sea Quarks written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We use the dynamical gluon configurations provided by the MILC collaboration in a study of the charmonium spectrum and[psi] leptonic width. We examine sea quark effects on mass splitting and on the leptonic decay matrix element for light masses as low as m[sub s]/5, while keeping the strange quark mass fixed and the lattice spacing nearly constant.
Download or read book Charmonium Spectrum from Quenched QCD with Overlap Fermions written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the first study of the charmonium spectrum using overlap fermions, on quenched configurations. Simulations are performed on 163 x 72 lattices, with Wilson gauge action at [beta] = 6.3345. We demonstrate that we have discretization errors under control at about 5%. We obtain 88(4) MeV for hyperfine splitting using the 0 scale, and 121(6) MeV using the (1{bar P}-1{bar S}) scale. This paper raises the possibility that the discrepancy between the lattice results and the experimental value for charmonium hyperfine splitting can be resolved using overlap fermions to simulate the charm quark on lattice.
Download or read book Charmonium from Lattice QCD. written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Charmonium is an attractive system for the application of lattice QCD methods. While the sub-threshold spectrum has been considered in some detail in previous works, it is only very recently that excited and higher-spin states and further properties such as radiative transitions and two-photon decays have come to be calculated. I report on this recent progress with reference to work done at Jefferson Lab.
Author : Gabriela Bailas
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (18 download)
Download or read book Aspects of Charmonium Physics in Lattice QCD written by Gabriela Bailas and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Charmonium states provide a relevant source of knowledge for determining fundamental parameters of the Standard Model. An important aspect of understanding Quantum ChromoDynamics (QCD) is to make precise predictions of the hadron spectrum and to test them against high-quality experimental data. Our theoretical framework is Lattice QCD, which is considered to be the only known way to treat the full QCD Lagrangian non perturbatively from first principles, in a manner well suited to numerical computation. By using the Wilson-Clover action with N_f = 2 dynamical flavors, we will study the two charmonium mesons eta_c and J/ psi. We will also investigate some properties of their first radial excitations eta_c(2S) and psi(2S).
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ISBN 13 :
Total Pages : 1134 pages
Book Rating : 4.3/5 (91 download)
Download or read book Lattice written by and published by . This book was released on 2003 with total page 1134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Excited Charmonium Physics from Lattice QCD. written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Properties of excited mesons are studied using a lattice QCD simulation of a system comparable to charmonium. We extract a spectrum of states, including those with manifestly exotic quantum numbers. Radiative transition form-factors are also computed, in particular the transition from exotic ·c1 to J /È 3 which is found to be large on the usual scale of magnetic dipole transitions.
Download or read book Radiative Charmonium Physics from Lattice QCD. written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Charmonium is an attractive system for the application of lattice QCD methods owing to the possibility of computing with the physical quark mass in a reasonable time. While the sub-threshold spectrum has been considered in some detail in previous works, it is only very recently that further properties such as radiative transitions and two-photon decays have come to be calculated; herein we discuss this recent progress.
Author : M. Fukugita
Publisher : Elsevier
ISBN 13 : 1483278050
Total Pages : 699 pages
Book Rating : 4.4/5 (832 download)
Download or read book Lattice 91 written by M. Fukugita and published by Elsevier. This book was released on 2016-06-03 with total page 699 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lattice 91 covers the proceedings of the International Symposium on Lattice Field Theory held in Tsukuba, Japan on 5-9 November 1991. The book focuses on quantum chromodynamics, Higgs-fermion theories, QED, lattice quantum gravity and random surfaces, spin systems related to field theory, simulation algorithms, and dedicated computers. The selection first offers information on the QCD spectrum and phase diagram on the lattice and QCD at finite density, including phase structure of QCD, Monte-Carlo simulations with dynamical fermions, and quenched approximation. The book then tackles weak matrix elements, simulation of heavy quarks, and sphaleron induced baryon number non-conservation. The text reviews quantum gravity and random surfaces, recent analytic progress in finite size effects, and parallel QCD machines. Discussions focus on two-dimensional quantum gravity, signatures of resonance in finite volume, first order transitions, and determination of the running coupling. The publication also ponders on hadronic forces from the lattice, universality of the confinement string in multiple potentials, and confinement and saddle-point configurations. The selection is highly recommended for readers interested in the lattice field theory.
Download or read book Charm Spectroscopy on Dynamical 2+1 Flavor Domain Wall Fermion Lattices with a Relativistic Heavy Quark Action written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a preliminary calculation of the charmonium spectrum using the dynamical 2+1 flavor $24^3\times 64$ domain wall fermion lattice configurations generated by the RBC and UKQCD collaborations. We use the relativistic heavy quark action with 3 parameters non-perturbatively determined by matching to experimental quantities. Chiral extrapolation is done on four light sea quark masses from 0.005 to 0.03, with $m_s=0.04$ and $m_{res}=0.003$. We can either predict meson masses assuming the lattice spacing is known from other methods, or calculate the lattice spacing using those quantities.
Author : Jan Smit
Publisher :
ISBN 13 :
Total Pages : 992 pages
Book Rating : 4.3/5 (243 download)
Download or read book Lattice 92 written by Jan Smit and published by . This book was released on 1993 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Juan Andrés Urrea Niño
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)
Download or read book Optimal Creation Operators for Charmonium Spectroscopy on the Lattice written by Juan Andrés Urrea Niño and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Blaschke
Publisher : Springer Science & Business Media
ISBN 13 : 9783540219217
Total Pages : 468 pages
Book Rating : 4.2/5 (192 download)
Download or read book Heavy Quark Physics written by David Blaschke and published by Springer Science & Business Media. This book was released on 2004-06-09 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume covers the main topics in heavy flavour physics in a comprehensive yet accessible way. The material is presented as a combination of extensive introductory lectures and more typical contributions. This book will benefit postgraduate students and reseachers alike.
Download or read book Radiative Transitions in Charmonium from Lattice QCD. written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiative transitions between charmonium states offer an insight into the internal structure of heavy-quark bound states within QCD. We compute, for the first time within lattice QCD, the transition form-factors of various multipolarities between the lightest few charmonium states. In addition, we compute the experimentally unobservable, but physically interesting vector form-factors of the [eta]{sub c}, J/[psi] and [chi]{sub c0}. To this end we apply an ambitious combination of lattice techniques, computing three-point functions with heavy domain wall fermions on an anisotropic lattice within the quenched approximation. With an anisotropy [xi] = 3 at a{sub s} ≈ 0.1 fm we find a reasonable gross spectrum and a hyperfine splitting ≈90 MeV, which compares favorably with other improved actions. In general, after extrapolation of lattice data at non-zero Q2 to the photopoint, our results agree within errors with all well measured experimental values. Furthermore, results are compared with the expectations of simple quark models where we find that many features are in agreement; beyond this we propose the possibility of constraining such models using our extracted values of physically unobservable quantities such as the J/[psi] quadrupole moment. We conclude that our methods are successful and propose to apply them to the problem of radiative transitions involving hybrid mesons, with the eventual goal of predicting hybrid meson photoproduction rates at the GlueX experiment.
