Scattering Meson and Baryon Resonances in Lattice QCD PDF Download

Author: A. V. Anisovich
Publisher: World Scientific
ISBN: 981281826X
Category : Science
Languages : en
Pages : 603

View

Book Description
This book is devoted to the investigation of the strongly interacting hadrons - to a quark model operating with effective color particles, constituent quarks, massive effective gluons and diquarks. The study of strong interactions based on effective constituent particles requires a solid ground of experimental data, which we now have at our disposal with the serious progress made in the investigation of hadrons, especially meson states.

Author: Srijit Paul
Publisher:
ISBN:
Category :
Languages : en
Pages :

View

Book Description

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 27

View

Book Description
The??+,?+?°, K+p, K+n, {bar K}°?+, and {bar K}°?° scattering lengths are calculated in mixed-action Lattice QCD with domain-wall valence quarks on the asqtad-improved coarse MILC configurations at four light-quark masses, and at two light-quark masses on the fine MILC configurations. Heavy Baryon Chiral Perturbation Theory with two and three flavors of light quarks is used to perform the chiral extrapolations. We find no convergence for the kaon-baryon processes in the three-flavor chiral expansion. Using the two-flavor chiral expansion, we find a{sub {pi}+?+} = -0.197 ± 0.017 fm, and a{sub {pi}+?°} = -0.098 ± 0.017 fm, where the comprehensive error includes statistical and systematic uncertainties.

Author: D.B. Lichtenberg
Publisher: Springer Science & Business Media
ISBN: 146159636X
Category : Science
Languages : en
Pages : 157

View

Book Description
This work originated in a series of lectures on meson and baryon ex cited states which I gave at the Stanford Linear Accelerator Center in the fall of 1962. The notes of these lectures were issued as a Stanford Uni versity report (SLAC-13) in March, 1963. In the fall of 1963, I gave a revised set of lectures on meson and baryon spectroscopy at Indiana University. In both cases, the talks were given primarily for experi mental physicists. In preparing the notes of these talks for pUblication, I have added some introductory material on pions, nucleons, kaons, and hyperons. My main emphasis is on the experimental facts concerning the spectros copy of the mesons and baryons and on the use of conservation laws in their interpretation. I have either mentioned briefly or omitted entirely explanations which depend on dynamical models. Although I have given a number of facts about the electromagnetic and weak decays of some mesons and baryons, I have not discussed the theory of these decays. This is not a comprehensive review of the subject of the strongly interacting particles, and the list of references is not complete. Also, I have not always devoted time to a subject in proportion to its impor tance, but have spent more time on topics which have particularly interested me. Nevertheless, I hope that I have provided a useful summary of the most important facts about the spectroscopy of the mesons and baryons.

Author: W Melnitchouk
Publisher: World Scientific
ISBN: 9814490105
Category : Science
Languages : en
Pages : 345

View

Book Description
This volume is centered on recent developments in the exploration of hadronic structure through lepton scattering, in the description of hadron physics directly from lattice QCD and non-perturbative QCD models, and in efforts to strengthen the links between these activities. Specific topics that are covered include: parton distribution functions, polarized structure functions, generalized structure functions, nuclear effects, quark-hadron duality, electromagnetic form factors, structure functions and hadron properties from lattice QCD, and QCD models based on the Dyson-Schwinger equations.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

View

Book Description
There has been recent, significant, advances in the determination of the meson spectrum of QCD. Current efforts have focused on the development and application of finite-volume formalisms that allow for the determination of scattering amplitudes as well as resonance behavior in coupled channel systems. I will review some of these recent developments, and demonstrate the viability of the method in meson systems.

Author: Wally Melnitchouk
Publisher: World Scientific
ISBN: 9810247494
Category : Science
Languages : en
Pages : 345

View

Book Description
This volume is centered on recent developments in the exploration of hadronic structure through lepton scattering, in the description of hadron physics directly from lattice QCD and non-perturbative QCD models, and in efforts to strengthen the links between these activities. Specific topics that are covered include: parton distribution functions, polarized structure functions, generalized structure functions, nuclear effects, quark-hadron duality, electromagnetic form factors, structure functions and hadron properties from lattice QCD, and QCD models based on the Dyson-Schwinger equations.

Author: Michael Nauenberg
Publisher:
ISBN:
Category : Mesons
Languages : en
Pages : 106

View

Book Description
Contents: The relativistic meson-baryon scattering matrix Proper Lorentz and space reflection invariance The center of mass two-component representa tion The differential scattering cross-section Unitary and partial wave expansion Unitarity below physical thresholds The analytic properties of partial amplitudes The Mandelstam representation Analystic properties of the partial amplitudes The dispersion relations for partial amplitudes The scattering length matrix approximation The partial amplitudes for pi-Y and K-N scattering.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

View

Book Description

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 81

View

Book Description
Lüscher's method is routinely used to determine meson-meson, meson-baryon, and baryon-baryon s-wave scattering amplitudes below inelastic thresholds from lattice QCD calculations--presently at unphysical light-quark masses. In this work we review the formalism and develop the requisite expressions to extract phase shifts describing meson-meson scattering in partial waves with angular momentum l≤6 and l=9. The implications of the underlying cubic symmetry, and strategies for extracting the phase shifts from lattice QCD calculations, are presented, along with a discussion of the signal-to-noise problem that afflicts the higher partial waves.