Progress with excited states in lattice QCD

Progress in computing the spectrum of excited baryons and mesons in lattice QCD is described. Large sets of spatially-extended hadron operators are used. The need for multi-hadron operators in addition to single-hadron operators is emphasized, necessitating the use of a new stochastic treatment of t...

Descripción completa

Detalles Bibliográficos
Autores principales: Morningstar, C, Bulava, J, Fahy, B, Foley, J, Jhang, Y.C, Juge, K.J, Lenkner, D, Wong, C.H
Publicado: 2013
Materias:
Particle Physics - Lattice
Acceso en línea:https://dx.doi.org/10.1063/1.4826815
http://cds.cern.ch/record/1709962
_version_ 1780936688968663040
author Morningstar, C
Bulava, J
Fahy, B
Foley, J
Jhang, Y.C
Juge, K.J
Lenkner, D
Wong, C.H
author_facet Morningstar, C
Bulava, J
Fahy, B
Foley, J
Jhang, Y.C
Juge, K.J
Lenkner, D
Wong, C.H
author_sort Morningstar, C
collection CERN
description Progress in computing the spectrum of excited baryons and mesons in lattice QCD is described. Large sets of spatially-extended hadron operators are used. The need for multi-hadron operators in addition to single-hadron operators is emphasized, necessitating the use of a new stochastic treatment of the low-lying modes of quark propagation which exploits Laplacian Heaviside quark-field smearing. A new glueball operator is tested and computing the mixing of this glueball operator with a quark-antiquark operator and multiple two-pion operators is shown to be feasible.
id cern-1709962
institution Organización Europea para la Investigación Nuclear
publishDate 2013
record_format invenio
spelling cern-17099622019-09-30T06:29:59Zdoi:10.1063/1.4826815http://cds.cern.ch/record/1709962Morningstar, CBulava, JFahy, BFoley, JJhang, Y.CJuge, K.JLenkner, DWong, C.HProgress with excited states in lattice QCDParticle Physics - LatticeProgress in computing the spectrum of excited baryons and mesons in lattice QCD is described. Large sets of spatially-extended hadron operators are used. The need for multi-hadron operators in addition to single-hadron operators is emphasized, necessitating the use of a new stochastic treatment of the low-lying modes of quark propagation which exploits Laplacian Heaviside quark-field smearing. A new glueball operator is tested and computing the mixing of this glueball operator with a quark-antiquark operator and multiple two-pion operators is shown to be feasible.oai:cds.cern.ch:17099622013
spellingShingle Particle Physics - Lattice
Morningstar, C
Bulava, J
Fahy, B
Foley, J
Jhang, Y.C
Juge, K.J
Lenkner, D
Wong, C.H
Progress with excited states in lattice QCD
title Progress with excited states in lattice QCD
title_full Progress with excited states in lattice QCD
title_fullStr Progress with excited states in lattice QCD
title_full_unstemmed Progress with excited states in lattice QCD
title_short Progress with excited states in lattice QCD
title_sort progress with excited states in lattice qcd
topic Particle Physics - Lattice
url https://dx.doi.org/10.1063/1.4826815
http://cds.cern.ch/record/1709962
work_keys_str_mv AT morningstarc progresswithexcitedstatesinlatticeqcd
AT bulavaj progresswithexcitedstatesinlatticeqcd
AT fahyb progresswithexcitedstatesinlatticeqcd
AT foleyj progresswithexcitedstatesinlatticeqcd
AT jhangyc progresswithexcitedstatesinlatticeqcd
AT jugekj progresswithexcitedstatesinlatticeqcd
AT lenknerd progresswithexcitedstatesinlatticeqcd
AT wongch progresswithexcitedstatesinlatticeqcd

Ejemplares similares