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

Journal Article · Mon Jan 02 04:00:00 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]

---

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

Related Subjects

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