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Unified chiral analysis of the vector meson spectrum from lattice QCD

W. Armour, Thomas Anthony Orcid Logo, Derek Bruce Leinweber, Ross Daniel Young, Chris Allton Orcid Logo

Journal of Physics G: Nuclear and Particle Physics, Volume: 32, Issue: 7, Pages: 971 - 991

Swansea University Author: Chris Allton Orcid Logo

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DOI (Published version): 10.1088/0954-3899/32/7/007

Abstract

The chiral extrapolation of the vector meson mass calculated in partially-quenched lattice simulations is investigated. The leading one-loop corrections to the vector meson mass are derived for partially-quenched QCD. A large sample of lattice results from the CP-PACS Collaboration is analysed, with...

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Published in: Journal of Physics G: Nuclear and Particle Physics
ISSN: 0954-3899 1361-6471
Published: 2006
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URI: https://cronfa.swan.ac.uk/Record/cronfa28423
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first_indexed 2016-06-02T18:23:28Z
last_indexed 2018-02-09T05:12:31Z
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spelling 2016-08-08T12:47:06.7460711 v2 28423 2016-06-02 Unified chiral analysis of the vector meson spectrum from lattice QCD de706a260fa1e1e47430693e135f41c7 0000-0003-0795-124X Chris Allton Chris Allton true false 2016-06-02 SPH The chiral extrapolation of the vector meson mass calculated in partially-quenched lattice simulations is investigated. The leading one-loop corrections to the vector meson mass are derived for partially-quenched QCD. A large sample of lattice results from the CP-PACS Collaboration is analysed, with explicit corrections for finite lattice spacing artifacts. To incorporate the effect of the opening decay channel as the chiral limit is approached, the extrapolation is studied using a necessary phenomenological extension of chiral effective field theory. This chiral analysis also provides a quantitative estimate of the leading finite volume corrections. It is found that the discretisation, finite-volume and partial quenching effects can all be very well described in this framework, producing an extrapolated value of M_\rho in excellent agreement with experiment. This procedure is also compared with extrapolations based on polynomial forms, where the results are much less enlightening. Journal Article Journal of Physics G: Nuclear and Particle Physics 32 7 971 991 0954-3899 1361-6471 31 12 2006 2006-12-31 10.1088/0954-3899/32/7/007 http://inspirehep.net/record/695061 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2016-08-08T12:47:06.7460711 2016-06-02T15:05:41.5059069 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics W. Armour 1 Thomas Anthony 0000-0003-0026-499X 2 Derek Bruce Leinweber 3 Ross Daniel Young 4 Chris Allton 0000-0003-0795-124X 5
title Unified chiral analysis of the vector meson spectrum from lattice QCD
spellingShingle Unified chiral analysis of the vector meson spectrum from lattice QCD
Chris Allton
title_short Unified chiral analysis of the vector meson spectrum from lattice QCD
title_full Unified chiral analysis of the vector meson spectrum from lattice QCD
title_fullStr Unified chiral analysis of the vector meson spectrum from lattice QCD
title_full_unstemmed Unified chiral analysis of the vector meson spectrum from lattice QCD
title_sort Unified chiral analysis of the vector meson spectrum from lattice QCD
author_id_str_mv de706a260fa1e1e47430693e135f41c7
author_id_fullname_str_mv de706a260fa1e1e47430693e135f41c7_***_Chris Allton
author Chris Allton
author2 W. Armour
Thomas Anthony
Derek Bruce Leinweber
Ross Daniel Young
Chris Allton
format Journal article
container_title Journal of Physics G: Nuclear and Particle Physics
container_volume 32
container_issue 7
container_start_page 971
publishDate 2006
institution Swansea University
issn 0954-3899
1361-6471
doi_str_mv 10.1088/0954-3899/32/7/007
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
url http://inspirehep.net/record/695061
document_store_str 0
active_str 0
description The chiral extrapolation of the vector meson mass calculated in partially-quenched lattice simulations is investigated. The leading one-loop corrections to the vector meson mass are derived for partially-quenched QCD. A large sample of lattice results from the CP-PACS Collaboration is analysed, with explicit corrections for finite lattice spacing artifacts. To incorporate the effect of the opening decay channel as the chiral limit is approached, the extrapolation is studied using a necessary phenomenological extension of chiral effective field theory. This chiral analysis also provides a quantitative estimate of the leading finite volume corrections. It is found that the discretisation, finite-volume and partial quenching effects can all be very well described in this framework, producing an extrapolated value of M_\rho in excellent agreement with experiment. This procedure is also compared with extrapolations based on polynomial forms, where the results are much less enlightening.
published_date 2006-12-31T03:34:33Z
_version_ 1763751466030333952
score 11.035634

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