Determination of ΛMS̄ from quenched and Nf = 2 dynamical QCD: QCDSF-UKQCD collaboration

S. Booth; M. Göckeler; R. Horsley; A. C. Irving; B. Joo; S. Pickles; D. Pleiter; P. E.L. Rakow; G. Schierholz; Z. Sroczynski; H. Stüben

doi:10.1016/S0370-2693(01)01103-0

Determination of Λ_MS̄ from quenched and N_f = 2 dynamical QCD: QCDSF-UKQCD collaboration

S. Booth, M. Göckeler, R. Horsley, A. C. Irving, B. Joo, S. Pickles, D. Pleiter, P. E.L. Rakow, G. Schierholz, Z. Sroczynski, H. Stüben

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55 Scopus citations

Abstract

The scale parameter Λ_MS̄ is computed on the lattice in the quenched approximation and for N_f = 2 flavors of light dynamical quarks. The dynamical calculation is done with non-perturbatively O(a) improved Wilson fermions. In the continuum limit we obtain Λ_MS̄ ^Nf=0 = 243(1)(10) MeV and Λ_MS̄ ^Nf=2 = 217(16)(11) MeV, respectively.

Original language	English
Pages (from-to)	229-237
Number of pages	9
Journal	Physics Letters B
Volume	519
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(01)01103-0
State	Published - Nov 1 2001
Externally published	Yes

Funding

We thank H. Panagopoulos for communicating the three-loop β function for improved Wilson fermions to us prior to publication. The numerical calculations have been performed on the Hitachi SR8000 at LRZ (Munich), on the Cray T3E at EPCC (Edinburgh), NIC (Jülich) and ZIB (Berlin) as well as on the APE/Quadrics at DESY (Zeuthen). We thank all institutions for their support. This work has been supported in part by the European Community's Human Potential Program under contract HPRN-CT-2000-00145, Hadrons/Lattice QCD. M.G. and P.E.L.R. acknowledge financial support from DFG.

Funders	Funder number
European Community's Human Potential Program	HPRN-CT-2000-00145
Deutsche Forschungsgemeinschaft

Keywords

Lattice
QCD
Strong coupling constant
Λ parameter

Access to Document

10.1016/S0370-2693(01)01103-0

Cite this

@article{c3cb4cd1503a480bbc61c171a845a4a2,

title = "Determination of ΛM{\=S} from quenched and Nf = 2 dynamical QCD: QCDSF-UKQCD collaboration",

abstract = "The scale parameter ΛM{\=S} is computed on the lattice in the quenched approximation and for Nf = 2 flavors of light dynamical quarks. The dynamical calculation is done with non-perturbatively O(a) improved Wilson fermions. In the continuum limit we obtain ΛM{\=S} Nf=0 = 243(1)(10) MeV and ΛM{\=S} Nf=2 = 217(16)(11) MeV, respectively.",

keywords = "Lattice, QCD, Strong coupling constant, Λ parameter",

author = "S. Booth and M. G{\"o}ckeler and R. Horsley and Irving, {A. C.} and B. Joo and S. Pickles and D. Pleiter and Rakow, {P. E.L.} and G. Schierholz and Z. Sroczynski and H. St{\"u}ben",

year = "2001",

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doi = "10.1016/S0370-2693(01)01103-0",

language = "English",

volume = "519",

pages = "229--237",

journal = "Physics Letters B",

issn = "0370-2693",

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number = "3-4",

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TY - JOUR

T1 - Determination of ΛMS̄ from quenched and Nf = 2 dynamical QCD

T2 - QCDSF-UKQCD collaboration

AU - Booth, S.

AU - Göckeler, M.

AU - Horsley, R.

AU - Irving, A. C.

AU - Joo, B.

AU - Pickles, S.

AU - Pleiter, D.

AU - Rakow, P. E.L.

AU - Schierholz, G.

AU - Sroczynski, Z.

AU - Stüben, H.

PY - 2001/11/1

Y1 - 2001/11/1

N2 - The scale parameter ΛMS̄ is computed on the lattice in the quenched approximation and for Nf = 2 flavors of light dynamical quarks. The dynamical calculation is done with non-perturbatively O(a) improved Wilson fermions. In the continuum limit we obtain ΛMS̄ Nf=0 = 243(1)(10) MeV and ΛMS̄ Nf=2 = 217(16)(11) MeV, respectively.

AB - The scale parameter ΛMS̄ is computed on the lattice in the quenched approximation and for Nf = 2 flavors of light dynamical quarks. The dynamical calculation is done with non-perturbatively O(a) improved Wilson fermions. In the continuum limit we obtain ΛMS̄ Nf=0 = 243(1)(10) MeV and ΛMS̄ Nf=2 = 217(16)(11) MeV, respectively.

KW - Lattice

KW - QCD

KW - Strong coupling constant

KW - Λ parameter

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DO - 10.1016/S0370-2693(01)01103-0

M3 - Article

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SN - 0370-2693

VL - 519

SP - 229

EP - 237

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