Current Quark Mass Ratios From $\eta \to 3 \pi$

Ametller, L.; Ayala, C.; Bramon, A.

doi:10.1103/PhysRevD.30.674

Current Quark Mass Ratios From $\eta \to 3 \pi$

L. Ametller
(
- Barcelona, Autonoma U.
)
,
C. Ayala
(
- Barcelona, Autonoma U.
)
,
A. Bramon
(
- Barcelona, Autonoma U.
)

Feb, 1984

8 pages

Published in:

Phys.Rev.D 30 (1984) 674

DOI:

10.1103/PhysRevD.30.674

Report number:

UAB-FT-102

View in:

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Abstract: (APS)

Recent data for the η meson, together with the ρ-dominance assumption for the η→π+π−π0 amplitude, are used to estimate the mass-matrix element accounting for the η−π mixing, mηπ2=−(4.2±1.0)×10−3 GeV2. From this value one easily obtains r−≡(md−mu)2ms=0.013±0.003, where mq are current-quark masses and r− measures the SU(2)- compared to SU(3)-symmetry breaking.

ETA: HADRONIC DECAY
HADRONIC DECAY: ETA
BRANCHING RATIO
INTERFERENCE: (ETA PI)
QUARK: MASS DIFFERENCE
MASS DIFFERENCE: QUARK
SYMMETRY BREAKING: SU(3)
FEYNMAN GRAPH: TADPOLE
NUMERICAL CALCULATIONS: INTERPRETATION OF EXPERIMENTS
ETA --> RHO(770) PI

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Figures(0)

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Current Quark Mass Ratios From η→3π\eta \to 3 \piη→3π

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Current Quark Mass Ratios From $\eta \to 3 \pi$