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Light hadron spectrum and decay constants in quenched lattice QCD

R.D. Kenway, B.J. Pendleton, Christopher T. Sachrajda, D.G. Richards, K.C. Bowler, S.P. Booth, D.S. Henty, J.N. Simone Orcid Logo, A.D. Simpson, R.M. Baxter, L. Lellouch, H. Wittig, C. McNeile, Chris Allton Orcid Logo

Physical Review D, Volume: 49, Issue: 1, Pages: 474 - 485

Swansea University Author: Chris Allton Orcid Logo

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DOI (Published version): 10.1103/PhysRevD.49.474

Abstract

We present results for light hadrons composed of both degenerate and non-degenerate quarks in quenched lattice QCD. We calculate masses and decay constants using 60 gauge configurations with an $O(a)$--improved fermion action at $\beta = 6.2$. Using the $\rho$ mass to set the scale, we find hadron m...

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Published in: Physical Review D
ISSN: 0556-2821
Published: 1994
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URI: https://cronfa.swan.ac.uk/Record/cronfa28429
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spelling 2016-08-08T12:43:55.7519472 v2 28429 2016-06-02 Light hadron spectrum and decay constants in quenched lattice QCD de706a260fa1e1e47430693e135f41c7 0000-0003-0795-124X Chris Allton Chris Allton true false 2016-06-02 SPH We present results for light hadrons composed of both degenerate and non-degenerate quarks in quenched lattice QCD. We calculate masses and decay constants using 60 gauge configurations with an $O(a)$--improved fermion action at $\beta = 6.2$. Using the $\rho$ mass to set the scale, we find hadron masses within two to three standard deviations of the experimental values (given in parentheses): $m_{K^*}=868\er{9}{8}$~MeV (892~MeV), $m_{\phi}=970\err{20}{10}$~MeV (1020~MeV), $m_N=820\err{90}{60}$~MeV (938~MeV), $m_\Delta=1300\errr{100}{100}$~MeV (1232~MeV) and $m_\Omega=1650\err{70}{50}$~MeV (1672~MeV). Direct comparison with experiment for decay constants is obscured by uncertainty in current renormalisations. However, for ratios of decay constants we obtain $f_K/f_\pi=1.20\er{3}{2}$ (1.22) and $f_\phi/f_\rho=1.13\er{2}{3}$ (1.22). Journal Article Physical Review D 49 1 474 485 0556-2821 31 12 1994 1994-12-31 10.1103/PhysRevD.49.474 http://inspirehep.net/record/358010 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2016-08-08T12:43:55.7519472 2016-06-02T15:05:46.9503418 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics R.D. Kenway 1 B.J. Pendleton 2 Christopher T. Sachrajda 3 D.G. Richards 4 K.C. Bowler 5 S.P. Booth 6 D.S. Henty 7 J.N. Simone 0000-0001-8515-3337 8 A.D. Simpson 9 R.M. Baxter 10 L. Lellouch 11 H. Wittig 12 C. McNeile 13 Chris Allton 0000-0003-0795-124X 14
title Light hadron spectrum and decay constants in quenched lattice QCD
spellingShingle Light hadron spectrum and decay constants in quenched lattice QCD
Chris Allton
title_short Light hadron spectrum and decay constants in quenched lattice QCD
title_full Light hadron spectrum and decay constants in quenched lattice QCD
title_fullStr Light hadron spectrum and decay constants in quenched lattice QCD
title_full_unstemmed Light hadron spectrum and decay constants in quenched lattice QCD
title_sort Light hadron spectrum and decay constants in quenched lattice QCD
author_id_str_mv de706a260fa1e1e47430693e135f41c7
author_id_fullname_str_mv de706a260fa1e1e47430693e135f41c7_***_Chris Allton
author Chris Allton
author2 R.D. Kenway
B.J. Pendleton
Christopher T. Sachrajda
D.G. Richards
K.C. Bowler
S.P. Booth
D.S. Henty
J.N. Simone
A.D. Simpson
R.M. Baxter
L. Lellouch
H. Wittig
C. McNeile
Chris Allton
format Journal article
container_title Physical Review D
container_volume 49
container_issue 1
container_start_page 474
publishDate 1994
institution Swansea University
issn 0556-2821
doi_str_mv 10.1103/PhysRevD.49.474
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/358010
document_store_str 0
active_str 0
description We present results for light hadrons composed of both degenerate and non-degenerate quarks in quenched lattice QCD. We calculate masses and decay constants using 60 gauge configurations with an $O(a)$--improved fermion action at $\beta = 6.2$. Using the $\rho$ mass to set the scale, we find hadron masses within two to three standard deviations of the experimental values (given in parentheses): $m_{K^*}=868\er{9}{8}$~MeV (892~MeV), $m_{\phi}=970\err{20}{10}$~MeV (1020~MeV), $m_N=820\err{90}{60}$~MeV (938~MeV), $m_\Delta=1300\errr{100}{100}$~MeV (1232~MeV) and $m_\Omega=1650\err{70}{50}$~MeV (1672~MeV). Direct comparison with experiment for decay constants is obscured by uncertainty in current renormalisations. However, for ratios of decay constants we obtain $f_K/f_\pi=1.20\er{3}{2}$ (1.22) and $f_\phi/f_\rho=1.13\er{2}{3}$ (1.22).
published_date 1994-12-31T03:34:34Z
_version_ 1763751466637459456
score 11.01306

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