Journal article 838 views
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 
,
A.D. Simpson,
R.M. Baxter,
L. Lellouch,
H. Wittig,
C. McNeile,
Chris Allton
,
A.D. Simpson,
R.M. Baxter,
L. Lellouch,
H. Wittig,
C. McNeile,
Chris Allton
Physical Review D, Volume: 49, Issue: 1, Pages: 474 - 485
Swansea University Author:
Chris Allton
Full text not available from this repository: check for access using links below.
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...
| Published in: | Physical Review D |
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| ISSN: | 0556-2821 |
| Published: |
1994
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| Online Access: |
Check full text
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa28429 |
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| 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 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). |
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| College: |
Faculty of Science and Engineering |
| Issue: |
1 |
| Start Page: |
474 |
| End Page: |
485 |