Quark masses and strong coupling constant in 2+1 flavor QCD
Abstract
We present a determination of the strange, charm and bottom quark masses as well as the strong coupling constant in 2+1 flavor lattice QCD simulations using highly improved staggered quark action. The ratios of the charm quark mass to the strange quark mass and the bottom quark mass to the charm quark mass are obtained from the meson masses calculated on the lattice and found to be mc/ms = 11.877(91) and mb/mc = 4.528(57) in the continuum limit. We also determine the strong coupling constant and the charm quark mass using the moments of pseudoscalar charmonium correlators: αs(μ = mc) = 0.3697(85) and mc(μ = mc) = 1.267(12) GeV. Our result for αs corresponds to the determination of the strong coupling constant at the lowest energy scale so far and is translated to the value αs(μ = MZ, nf = 5) = 0.11622(84).
- Authors:
-
- Kyoto Univ. (Japan)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Under Secretary for Science (S-4); USDOE
- OSTI Identifier:
- 1341636
- Alternate Identifier(s):
- OSTI ID: 1312056
- Report Number(s):
- BNL-113345-2016-JA
Journal ID: ISSN 2470-0010; R&D Project: KB0301020; KB0301020; TRN: US1701680
- Grant/Contract Number:
- SC00112704; SC0012704
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Volume: 94; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Maezawa, Y., and Petreczky, P. Quark masses and strong coupling constant in 2+1 flavor QCD. United States: N. p., 2016.
Web. doi:10.1103/PhysRevD.94.034507.
Maezawa, Y., & Petreczky, P. Quark masses and strong coupling constant in 2+1 flavor QCD. United States. https://doi.org/10.1103/PhysRevD.94.034507
Maezawa, Y., and Petreczky, P. 2016.
"Quark masses and strong coupling constant in 2+1 flavor QCD". United States. https://doi.org/10.1103/PhysRevD.94.034507. https://www.osti.gov/servlets/purl/1341636.
@article{osti_1341636,
title = {Quark masses and strong coupling constant in 2+1 flavor QCD},
author = {Maezawa, Y. and Petreczky, P.},
abstractNote = {We present a determination of the strange, charm and bottom quark masses as well as the strong coupling constant in 2+1 flavor lattice QCD simulations using highly improved staggered quark action. The ratios of the charm quark mass to the strange quark mass and the bottom quark mass to the charm quark mass are obtained from the meson masses calculated on the lattice and found to be mc/ms = 11.877(91) and mb/mc = 4.528(57) in the continuum limit. We also determine the strong coupling constant and the charm quark mass using the moments of pseudoscalar charmonium correlators: αs(μ = mc) = 0.3697(85) and mc(μ = mc) = 1.267(12) GeV. Our result for αs corresponds to the determination of the strong coupling constant at the lowest energy scale so far and is translated to the value αs(μ = MZ, nf = 5) = 0.11622(84).},
doi = {10.1103/PhysRevD.94.034507},
url = {https://www.osti.gov/biblio/1341636},
journal = {Physical Review D},
issn = {2470-0010},
number = ,
volume = 94,
place = {United States},
year = {Tue Aug 30 00:00:00 EDT 2016},
month = {Tue Aug 30 00:00:00 EDT 2016}
}
Web of Science
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