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Author :
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (766 download)
Download or read book Quark Spectra and Light Hadron Phenomenology from Overlap Fermions with Improved Gauge Field Action written by and published by . This book was released on 2003 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Galletly
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (66 download)
Download or read book Light Hadron Phenomenology with Overlap Fermions and an Improved Gauge Action written by David Galletly and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Galletly
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (66 download)
Download or read book Light Hadron Phenomenology with Overlap Fermions and an Improved Gauge Action written by David Galletly and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Siegfried Wagner
Publisher : Springer Science & Business Media
ISBN 13 : 3642138721
Total Pages : 770 pages
Book Rating : 4.6/5 (421 download)
Download or read book High Performance Computing in Science and Engineering, Garching/Munich 2009 written by Siegfried Wagner and published by Springer Science & Business Media. This book was released on 2010-08-12 with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Leibniz Supercomputing Centre (LRZ) and the Bavarian Competence Network for Technical and Scienti?c High Performance Computing (KONWIHR) publish in the present book results of numerical simulations facilitated by the High P- formance Computer System in Bavaria (HLRB II) within the last two years. The papers were presented at the Fourth Joint HLRB and KONWIHR Review and - sult Workshop in Garching on 8th and 9th December 2009, and were selected from all progress reports of projects that use the HLRB II. Similar to the workshop two years ago, the majority of the contributed papers belong to the area of computational ?uid dynamics (CFD), condensed matter physics, astrophysics, chemistry, computer sciences and high-energy physics. We note a considerable increase of the user c- munity in some areas: Compared to 2007, the number of papers increased from 6 to 12 in condensed matter physics and from 2 to 5 in high-energy physics. Bio s- ences contributed only one paper in 2007, but four papers in 2009. This indicates that the area of application of supercomputers is continuously growing and entering new ?elds of research. The year 2007 saw two major events of particular importance for the LRZ. First, after a substantial upgrade with dual-core processors the SGI Altix 4700 superc- puter reached a peak performance of more than 62 Tera?op/s. And second, the n- pro?t organization Gauss Centre for Supercomputing e. V. (GCS) was founded on April 13th.
Author : Claude Amsler
Publisher : Springer
ISBN 13 : 3319985272
Total Pages : 277 pages
Book Rating : 4.3/5 (199 download)
Download or read book The Quark Structure of Hadrons written by Claude Amsler and published by Springer. This book was released on 2018-10-30 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: Novel forms of matter, such as states made of gluons (glueballs), multiquark mesons or baryons and hybrid mesons are predicted by low energy QCD, for which several candidates have recently been identified. Searching for such exotic states of matter and studying their production and decay properties in detail has become a flourishing field at the experimental facilities now available or being built - e.g. BESIII in Beijing, BELLE II at SuperKEKB, GlueX at Jefferson Lab, PANDA at FAIR, J-PARC and in the upgraded LHC experiments, in particular LHCb. A modern primer in the field is required so as to both revive and update the teaching of a new generation of researchers in the field of QCD. These lectures on hadron spectroscopy are intended for Master and PhD students and have been originally developed for a course delivered at the Stefan Meyer Institute of the Austrian Academy of Sciences. They are phenomenologically oriented and intended as complementary material for basic courses in particle and nuclear physics. The book describes the spectra of light and heavy mesons and baryons, and introduces the fundamental properties based on symmetries. Further, it derives multiplet structures, mixing angle, decay coupling constants, magnetic moments of baryons, and predictions for multiquark states and compares these with suitable experimental data. Basic methods of calculating decay angular distributions and determining masses and widths of resonances are also presented. The appendices provide students and newcomers to the field with the necessary background information, and include a set of problems and solutions.
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ISBN 13 :
Total Pages : 984 pages
Book Rating : 4.3/5 (91 download)
Download or read book Lattice written by and published by . This book was released on 2004 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 994 pages
Book Rating : 4.F/5 ( download)
Download or read book Lattice 2003 written by and published by . This book was released on 2004 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Wolfgang Lucha
Publisher : World Scientific
ISBN 13 : 9814491454
Total Pages : 388 pages
Book Rating : 4.8/5 (144 download)
Download or read book Quark Confinement And The Hadron Spectrum Iv written by Wolfgang Lucha and published by World Scientific. This book was released on 2002-02-27 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum chromodynamics is generally accepted to be the quantum field theory which describes the strong interactions in elementary particle physics. However, the question of the mechanism responsible for the “confinement” of the color degrees of freedom of quarks and gluons into hadrons still ranks as one of the most interesting open problems in physics.This proceedings volume summarizes the state of the art in this area of research. Mathematically inclined readers will find the articles based on monopoles, vortices, and topology most interesting. Meanwhile, lattice calculations can be performed for many important physical quantities. Their results can be used as guidelines for developing models of quark confinement. These models are indispensable for theoretical physicists performing calculations with the Bethe-Salpeter equation, Dyson-Schwinger equations, effective Hamiltonians, and potential models. The cross-fertilization of all these subfields of research becomes evident from the articles in this book. A few experimental papers are also included.
Download or read book Hadron Spectrum, Quark Masses and Decay Constants from Light Overlap Fermions on Large Lattices written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (591 download)
Download or read book One-loop Renormalisation of Quark Bilinears for Overlap Fermions with Improved Gauge Actions written by and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jose Emilio F. T. Ribeiro
Publisher : AIP Conference Proceedings (Nu
ISBN 13 :
Total Pages : 580 pages
Book Rating : 4.:/5 (318 download)
Download or read book Quark Confinement and the Hadron Spectrum VII written by Jose Emilio F. T. Ribeiro and published by AIP Conference Proceedings (Nu. This book was released on 2007-03-14 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume features papers presented at the 7th Conference on Quark Confinement and the Hadron Spectrum. It covers the up-to-date research done in the physics of quarks and their role as ultimate constituents of matter. It will be of interest to all theoreticians and experimentalists working in these areas.
Author : R. Horsley
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (591 download)
Download or read book One-loop Renormalisation of Quark Bilinears for Overlap Fermions with Improved Gauge Actions written by R. Horsley and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Light Quark Simulations with FLIC Fermions written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Hadron masses are calculated in quenched lattice QCD in order to probe the scaling behavior of a novel fat-link clover fermion action in which only the irrelevant operators of the fermion action are constructed using APE-smeared links. Light quark masses corresponding to an m{sub pi}/m{sub p} ratio of 0.35 are considered to assess the exceptional configuration problem of clover-fermion actions. This Fat-Link Irrelevant Clover (FLIC) fermion action provides scaling which is superior to mean-field improvement and offers advantages over nonperturbative improvement, including reduced exceptional configurations.
Download or read book Quenched Chiral Log and Light Quark Mass from Overlap Fermions written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We study the quenched chiral behavior of the pion with mass as low as[approx] 180 MeV. The calculation is done on a quenched lattice of size 16[sup 3] x 28 and a= 0.2 fm with 80 configurations using overlap fermions and an improved gauge action. Using an improved constrained curve fitting technique, we find that the ground state pseudoscalar mass versus bare quark mass behavior is well controlled with small statistical errors; this permits a reliable fit of the quenched chiral log effects, a determination of the chiral log parameter ([delta]= 0.26(3)), and an estimate of the renormalized mass of the light quark (m[sup[ovr MS]]([mu]= 2 GeV)= 3.7(3) MeV).
Author : Ph. de Forcrand
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (256 download)
Download or read book Exploring Hadron Masses in Lattice QCD with Light Quarks and an Improved Fermion Action written by Ph. de Forcrand and published by . This book was released on 1987 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. Sommer
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (256 download)
Download or read book Hadron Masses from Light Quarks and Improved Fermionic Actions written by R. Sommer and published by . This book was released on 1987 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stefan Meinel
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (89 download)
Download or read book Heavy Quark Physics on the Lattice with Improved Nonrelativistic Actions written by Stefan Meinel and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Hadrons containing heavy quarks, in particular b quarks, play an important role in high energy physics. Measurements of their electroweak interactions are used to test the Standard Model and search for new physics. For the comparison of experimental results with theoretical predictions, nonperturbative calculations of hadronic matrix elements within the theory of quantum chromodymanics are required. Such calculations can be performed from first principles by formulating QCD on a Euclidean spacetime grid and computing the path integral numerically. Including b quarks in lattice QCD calculations requires special techniques as the lattice spacing in present computations usually can not be chosen fine enough to resolve their Compton wavelength. In this work, improved nonrelativistic lattice actions for heavy quarks are used to perform calculations of the bottom hadron mass spectrum and of form factors for heavy-to-light decays. In heavy-to-light decays, additional complications arise at high recoil, when the momentum of the light meson reaches a magnitude comparable to the cutoff imposed by the lattice. Discretisation errors at high recoil can be reduced by working in a frame of reference where the heavy and light mesons move in opposite directions. Using a formalism referred to as moving nonrelativistic QCD (mNRQCD), the nonrelativistic expansion for the heavy quark can be performed around a state with an arbitrary velocity. This dissertation begins with a review of the fundamentals of lattice QCD. Then, the construction of effective Lagrangians for heavy quarks in the continuum and on the lattice is discussed in detail. A highly improved lattice mNRQCD action is derived and its effectiveness is demonstrated by nonperturbative tests involving both heavy-heavy and heavy-light mesons at several frame velocities. This mNRQCD action is then used in combination with a staggered action for the light quarks to calculate hadronic matrix elements relevant for rare B decays, including B --> K* gamma and B --> K l l. A major contribution to the uncertainty of the results also comes from statistical errors. The effectiveness of random-wall sources to reduce these errors is studied. As another application of a nonrelativistic heavy quark action, the spectrum of bottomonium is calculated and masses of several bottom baryons are predicted. In these computations, the light quarks are implemented with a domain wall action.
