New determination of the pole mass of the [ital b] quark using lattice QCD
- University of Glasgow, Glasgow G12 8QQ (United Kingdom) Southern Methodist University, Dallas, Texas 75275 (United States) Newman Laboratory of Nuclear Studies, Cornell University, Ithaca, New York 14853 (United States) University of Edinburgh, Edinburgh EH9 3JZ (United Kingdom) The Ohio State University, Columbus, Ohio 43210 (United States) Florida State University, SCRI, Tallahassee, Florida 32306 (United States)
Recent results from lattice QCD simulations provide a realistic picture, based upon first principles, of [Upsilon] physics. We combine these results with the experimentally measured mass of the [Upsilon] meson to obtain an accurate and reliable value for the [ital b] quark's pole mass. We use two different methods, each of which yields a mass consistent with [ital M][sub [ital b]]=5.0(2) GeV. This corresponds to a bare mass of [ital M][sub [ital b]][sup 0]=4.0(1) GeV in our lattice theory and an [bar M][bar S] mass of [ital M][sub [ital b]][sup [bar M][bar S]]([ital M][sub [ital b]])=4.0(1) GeV. ([bar M][bar S] denotes the modified minimal-subtraction scheme). We discuss the implications of this result for the [ital c]-quark mass.
- DOE Contract Number:
- FG02-91ER40690; FG05-85ER25000; FG05-92ER40742; FG05-92ER40722
- OSTI ID:
- 6882212
- Journal Information:
- Physical Review Letters; (United States), Vol. 73:20; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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662230* - Quantum Chromodynamics- (1992-)
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