Hadron masses in QCD with two flavors of dynamical fermions at. beta. =5. 7

Journal Article · Mon Aug 26 04:00:00 EDT 1991 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.67.1062· OSTI ID:5220314

Brown, F R; Butler, F P; Chen, H; Christ, N H; Dong, Z; Schaffer, W; Unger, L I; Vaccarino, A ^[1]

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1. Columbia University, Department of Physics, New York, New York (USA)

A hadron mass calculation is reported using two flavors of dynamical, staggered fermions with masses of {ital ma}=0.01, 0.015, 0.02, and 0.025 on a 16{sup 3}{times}32 lattice. The masses of hadrons containing valence quarks with {ital ma}=0.004, 0.07, 0.1, 0.14, and 0.25 were also computed to study the limit {ital ma}{r arrow}0 and the strange particle spectrum. For {ital ma}=0.01, the mass ratio {ital m}{sub {ital N}}/{ital m}{sub {rho}}=1.527(11) is 25% larger than experiment while the results {ital f}{sub {pi}}/{ital m}{sub {rho}}=0.14(1) and ({ital m}{sub {ital K}}{sup 2}{minus}{ital m}{sub {pi}}{sup 2})/({ital m}{sub {ital K}}{sup *}{minus}{ital m}{sub {rho}}){ital m}{sub {rho}}=2.25(3) agree somewhat better.

• OSTI ID: 5220314
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:9; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
CALCULATION METHODS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
LATTICE FIELD THEORY
LIE GROUPS
MASS
MASS FORMULAE
NUCLEONS
OKUBO MASS FORMULA
POSTULATED PARTICLES
PROPAGATOR
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
SU GROUPS
SU-3 GROUPS
SYMMETRY GROUPS