f{sub 0}(600),{kappa}(800), {rho}(770) and K*(892), quark mass dependence from unitarized SU(3) Chiral Perturbation Theory
Journal Article
·
· AIP Conference Proceedings
- Dept. Fisica Teorica II, Universidad Complutense, 28040, Madrid (Spain)
We study the strange and non-strange quark mass dependence of the parameters of the f{sub 0}(600),{kappa}(800), {rho}(770) and K*(892) resonances generated from elastic meson-meson scattering using unitarized one-loop Chiral Perturbation Theory. We fit simultaneously all experimental scattering data up to 0.8-1 GeV together with lattice results on decay constants and scattering lengths up to a pion mass of 440 MeV. Then, the strange and non-strange quark masses are varied from the chiral limit up to values of interest for lattice studies. In these amplitudes, the mass and width of the {rho}(770) and K*(892) present a similar and smooth quark mass dependence. In contrast, both scalars present a similar non-analyticity at high quark masses. Nevertheless the f{sub 0}(600) dependence on both quark masses is stronger than for the {kappa}(800) and the vectors. We also confirm the lattice assumption of quark mass independence of the vector two-meson coupling that, in contrast, is violated for scalars.
- OSTI ID:
- 21426443
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1257; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CHIRALITY
DECAY
DIMENSIONS
ELEMENTARY PARTICLES
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
K*-892 MESONS
LENGTH
LIE GROUPS
MASS
MESON-MESON INTERACTIONS
MESONS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PARTICLE WIDTHS
PERTURBATION THEORY
PION-PION INTERACTIONS
PIONS
PSEUDOSCALAR MESONS
QUARK-ANTIQUARK INTERACTIONS
QUARKS
REST MASS
RHO-770 MESONS
S QUARKS
SCATTERING LENGTHS
STRANGE MESONS
STRANGE PARTICLES
SU GROUPS
SU-3 GROUPS
SYMMETRY GROUPS
UNITARITY
VECTOR MESONS
BOSONS
CHIRALITY
DECAY
DIMENSIONS
ELEMENTARY PARTICLES
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
K*-892 MESONS
LENGTH
LIE GROUPS
MASS
MESON-MESON INTERACTIONS
MESONS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PARTICLE WIDTHS
PERTURBATION THEORY
PION-PION INTERACTIONS
PIONS
PSEUDOSCALAR MESONS
QUARK-ANTIQUARK INTERACTIONS
QUARKS
REST MASS
RHO-770 MESONS
S QUARKS
SCATTERING LENGTHS
STRANGE MESONS
STRANGE PARTICLES
SU GROUPS
SU-3 GROUPS
SYMMETRY GROUPS
UNITARITY
VECTOR MESONS