First observation of the decay phi --> eta-prime(958) gamma
Dec, 19977 pages
Published in:
- Phys.Lett.B 415 (1997) 445-451
Experiments:
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Abstract: (Elsevier)
The decay φ → η ′ γ has been observed by the CMD-2 detector at the e + e − collider VEPP-2M at Novosibirsk. Of 5.5 million produced φ 's, six events of the φ → η ′ γ decay were selected with the expected background less than one event. The corresponding branching ratio is B( φ → η ′ γ )=1.2 +0.7 −0.5 ·10 −4 . It is the first observation of this radiative decay.- electron positron: colliding beams
- electron positron: annihilation
- Phi(1020): electroproduction
- Phi(1020): radiative decay
- eta(958)
- Phi(1020): branching ratio
- magnetic detector: experimental results
- Novosibirsk Stor2
- Phi(1020) --> eta(958) photon
- eta(958) --> pi+ pi- pi0
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