New measurement of the rare decay phi ---> eta-prime gamma with CMD-2 - INSPIRE

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New measurement of the rare decay phi ---> eta-prime gamma with CMD-2

CMD-2

Collaboration

•

R.R. Akhmetshin
(
- Novosibirsk, IYF
)

Nov, 1999

12 pages

Published in:

Phys.Lett.B 473 (2000) 337-342

e-Print:

hep-ex/9911036 [hep-ex]

DOI:

10.1016/S0370-2693(99)01475-6

PDG:

{{\mathit \phi}{(1020)}}

\rightarrow

{{\mathit \eta}^{\,'}{(958)}}{{\mathit \gamma}}

Report number:

BUDKER-INP-1999-11

Experiments:

NOVOSIBIRSK-CMD-2

View in:

ADS Abstract Service

reference search20 citations

Citations per year

Abstract: (Elsevier)

A new measurement of the rare decay φ → η ′ γ performed with the CMD-2 detector at the VEPP-2M collider in Novosibirsk is described. Of the data sample corresponding to the integrated luminosity of 14.5 pb −1 , twenty one events have been selected in the mode η ′→ π + π − η , η → γγ . The following branching ratio was obtained: B( φ → η ′ γ )=(8.2 +2.1 −1.9 ±1.1)·10 −5 .

Note:

12 pages, 4 figures, LaTex

electron positron: colliding beams
electron positron: annihilation
Phi(1020): electroproduction
Phi(1020): radiative decay
Phi(1020): rare decay
eta(958): hadronic decay
Phi(1020): branching ratio
magnetic detector: experimental results
Novosibirsk Stor2
electron positron --> Phi(1020)

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