Manifestation of sea quark effects in the strong coupling constant in lattice QCD

Journal Article · Mon Jan 02 00:00:00 EST 1995 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.74.22· OSTI ID:6644064

Aoki, S; Fukugita, M; Hashimoto, S; Ishizuka, N; Mino, H; Okawa, M; Onogi, T; Ukawa, A ^[1]

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1. Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305 (Japan) Yukawa Institute for Theoretical Physics, Kyoto University , Kyoto 606 (Japan) Department of Physics, Hiroshima University, Higashi-Hiroshima 724 (Japan) Faculty of Engineering, Yamanashi University, Kofu 400 (Japan) National Laboratory for High Energy Physics (KEK) , Ibaraki 305 (Japan)

We demonstrate that sea quark effects of a magnitude expected from renormalization group considerations are clearly visible in the strong coupling constant measured in current full QCD simulations. Building on this result an estimate of [alpha] (5)/MS ([ital M][sub [ital Z]]) ([bar M][bar S] denotes the modified minimal subtraction scheme) is made employing the charmonium 1[ital S]-1[ital P] mass splitting calculated on full QCD configurations generated with two flavors of dynamical Kogut-Susskind quarks to fix the scale.

• OSTI ID: 6644064
• Journal Information: Physical Review Letters; (United States), Vol. 74:1; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
QUANTUM CHROMODYNAMICS
COUPLING CONSTANTS
CHARMONIUM
LATTICE FIELD THEORY
QUARKS
SIMULATION
STRONG-COUPLING MODEL
BOSONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
MATHEMATICAL MODELS
MESONS
PARTICLE MODELS
POSTULATED PARTICLES
QUANTUM FIELD THEORY
QUARKONIUM
662230* - Quantum Chromodynamics- (1992-)