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https://hdl.handle.net/2440/23572
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Type: | Journal article |
Title: | Unified chiral analysis of the vector meson spectrum from lattice QCD |
Author: | Armour, W. Allton, C. Leinweber, D. Thomas, A. Young, R. |
Citation: | Journal of Physics G: Nuclear and Particle Physics, 2006; 32(7):971-991 |
Publisher: | IOP Publishing Ltd |
Issue Date: | 2006 |
ISSN: | 0954-3899 1361-6471 |
Statement of Responsibility: | W Armour, C R Allton, D B Leinweber, A W Thomas and R D Young |
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 explicit corrections for finite lattice spacing artefacts. 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 discretization, finite-volume and partial quenching effects can all be very well described in this framework, producing an extrapolated value of Mρ in excellent agreement with experiment. This procedure is also compared with extrapolations based on polynomial forms, where the results are much less enlightening. © 2006 IOP Publishing Ltd. |
Description: | Copyright © Institute of Physics and IOP Publishing Limited 2006 |
DOI: | 10.1088/0954-3899/32/7/007 |
Published version: | http://dx.doi.org/10.1088/0954-3899/32/7/007 |
Appears in Collections: | Aurora harvest 6 Physics publications |
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