[HTML][HTML] Study of the a0 (980) meson via the radiative decay ϕ→ ηπ0γ with the KLOE detector
F Ambrosino, A Antonelli, M Antonelli, F Archilli… - Physics Letters B, 2009 - Elsevier
Physics Letters B, 2009•Elsevier
We have studied the ϕ→ a0 (980) γ process with the KLOE detector at the Frascati ϕ-factory
DAΦNE by detecting the ϕ→ ηπ0γ decays in the final states with η→ γγ and η→ π+ π− π0.
We have measured the branching ratios for both final states: Br (ϕ→ ηπ0γ)=(7.01±0.10±0.20
)× 10− 5 and (7.12±0.13±0.22)× 10− 5, respectively. We have also extracted the a0 (980)
mass and its couplings to ηπ0, K+ K−, and to the ϕ meson from the fit of the ηπ0 invariant
mass distributions using different phenomenological models.
DAΦNE by detecting the ϕ→ ηπ0γ decays in the final states with η→ γγ and η→ π+ π− π0.
We have measured the branching ratios for both final states: Br (ϕ→ ηπ0γ)=(7.01±0.10±0.20
)× 10− 5 and (7.12±0.13±0.22)× 10− 5, respectively. We have also extracted the a0 (980)
mass and its couplings to ηπ0, K+ K−, and to the ϕ meson from the fit of the ηπ0 invariant
mass distributions using different phenomenological models.
We have studied the ϕ→a0(980)γ process with the KLOE detector at the Frascati ϕ-factory DAΦNE by detecting the ϕ→ηπ0γ decays in the final states with η→γγ and η→π+π−π0. We have measured the branching ratios for both final states: Br(ϕ→ηπ0γ)=(7.01±0.10±0.20)×10−5 and (7.12±0.13±0.22)×10−5, respectively. We have also extracted the a0(980) mass and its couplings to ηπ0, K+K−, and to the ϕ meson from the fit of the ηπ0 invariant mass distributions using different phenomenological models.
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