Light hadron spectrum and decay constants in quenched lattice QCD

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

doi:10.1103/PhysRevD.49.474

Light hadron spectrum and decay constants in quenched lattice QCD

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

^*Corresponding author for this work

School of Engineering, Computing and Mathematics

Research output: Contribution to journal › Article › peer-review

Abstract

We present results for light hadrons composed of both degenerate and nondegenerate quarks in quenched lattice QCD. We calculate masses and decay constants using 60 gauge configurations with an O(a)-improved fermion action at =6.2. Using the mass to set the scale we find hadron masses within two to three standard deviations of the experimental values (given in parentheses): mK*=868-8+9 MeV (892 MeV), m=970-10+20 MeV (1020 MeV), mN=820-60+90 MeV (938 MeV), m=1300-100+100 MeV (1232 MeV), and m=1650-50+70 MeV (1672 MeV). Direct comparison with experiment for decay constants is obscured by uncertainty in current renormalizations. However, for ratios of decay constants we obtain fKf=1.20-2+3(1.22) and ff=1.13-3+2(1.22).

Original language	English
Pages (from-to)	474-485
Number of pages	12
Journal	Physical Review D
Volume	49
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.49.474
Publication status	Published - 1994

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Nuclear and High Energy Physics

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10.1103/PhysRevD.49.474

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@article{ced2998379a54fe0a8e1f2540fa8d7d4,

title = "Light hadron spectrum and decay constants in quenched lattice QCD",

abstract = "We present results for light hadrons composed of both degenerate and nondegenerate quarks in quenched lattice QCD. We calculate masses and decay constants using 60 gauge configurations with an O(a)-improved fermion action at =6.2. Using the mass to set the scale we find hadron masses within two to three standard deviations of the experimental values (given in parentheses): mK*=868-8+9 MeV (892 MeV), m=970-10+20 MeV (1020 MeV), mN=820-60+90 MeV (938 MeV), m=1300-100+100 MeV (1232 MeV), and m=1650-50+70 MeV (1672 MeV). Direct comparison with experiment for decay constants is obscured by uncertainty in current renormalizations. However, for ratios of decay constants we obtain fKf=1.20-2+3(1.22) and ff=1.13-3+2(1.22).",

author = "Allton, {C. R.} and L. Lellouch and Sachrajda, {C. T.} and H. Wittig and Baxter, {R. M.} and Booth, {S. P.} and Bowler, {K. C.} and Henty, {D. S.} and Kenway, {R. D.} and C. McNeile and Pendleton, {B. J.} and Richards, {D. G.} and Simone, {J. N.} and Simpson, {A. D.}",

year = "1994",

doi = "10.1103/PhysRevD.49.474",

language = "English",

volume = "49",

pages = "474--485",

journal = "Physical Review D",

issn = "0556-2821",

publisher = "American Institute of Physics",

number = "1",

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TY - JOUR

T1 - Light hadron spectrum and decay constants in quenched lattice QCD

AU - Allton, C. R.

AU - Lellouch, L.

AU - Sachrajda, C. T.

AU - Wittig, H.

AU - Baxter, R. M.

AU - Booth, S. P.

AU - Bowler, K. C.

AU - Henty, D. S.

AU - Kenway, R. D.

AU - McNeile, C.

AU - Pendleton, B. J.

AU - Richards, D. G.

AU - Simone, J. N.

AU - Simpson, A. D.

PY - 1994

Y1 - 1994

N2 - We present results for light hadrons composed of both degenerate and nondegenerate quarks in quenched lattice QCD. We calculate masses and decay constants using 60 gauge configurations with an O(a)-improved fermion action at =6.2. Using the mass to set the scale we find hadron masses within two to three standard deviations of the experimental values (given in parentheses): mK*=868-8+9 MeV (892 MeV), m=970-10+20 MeV (1020 MeV), mN=820-60+90 MeV (938 MeV), m=1300-100+100 MeV (1232 MeV), and m=1650-50+70 MeV (1672 MeV). Direct comparison with experiment for decay constants is obscured by uncertainty in current renormalizations. However, for ratios of decay constants we obtain fKf=1.20-2+3(1.22) and ff=1.13-3+2(1.22).

AB - We present results for light hadrons composed of both degenerate and nondegenerate quarks in quenched lattice QCD. We calculate masses and decay constants using 60 gauge configurations with an O(a)-improved fermion action at =6.2. Using the mass to set the scale we find hadron masses within two to three standard deviations of the experimental values (given in parentheses): mK*=868-8+9 MeV (892 MeV), m=970-10+20 MeV (1020 MeV), mN=820-60+90 MeV (938 MeV), m=1300-100+100 MeV (1232 MeV), and m=1650-50+70 MeV (1672 MeV). Direct comparison with experiment for decay constants is obscured by uncertainty in current renormalizations. However, for ratios of decay constants we obtain fKf=1.20-2+3(1.22) and ff=1.13-3+2(1.22).

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U2 - 10.1103/PhysRevD.49.474

DO - 10.1103/PhysRevD.49.474

M3 - Article

AN - SCOPUS:4243418083

SN - 0556-2821

VL - 49

SP - 474

EP - 485

JO - Physical Review D

JF - Physical Review D

IS - 1

ER -

Light hadron spectrum and decay constants in quenched lattice QCD

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