Advertisement

Experimental study of the processes \(e^+e^-\rightarrow \phi \rightarrow \eta \gamma , \pi ^{0}\gamma\) at VEPP-2M

  • M.N. Achasov
  • A.V. Berdyugin
  • A.V. Bozhenok
  • D.A. Bukin
  • S.V. Burdin
  • T.V. Dimova
  • V.P. Druzhinin
  • M.S. Dubrovin
  • I.A. Gaponenko
  • V.B. Golubev
  • V.N. Ivanchenko
  • A.A. Korol
  • S.V. Koshuba
  • E.V. Pakhtusova
  • A.A. Salnikov
  • S.I. Serednyakov
  • V.V. Shary
  • Yu.M. Shatunov
  • V.A. Sidorov
  • Z.K. Silagadze
Experimental physics

Abstract.

The processes \(e^+e^-\rightarrow\eta\gamma, \pi^0\gamma\rightarrow 3\gamma\) were studied in the SND experiment at the VEPP-2M collider in the energy region of the \(\phi\) meson. The branching ratios obtained in this study are \(\mathrm{Br}(\phi \rightarrow \eta \gamma)=(1.338\pm 0.012\pm 0.052)\)% and \(\mathrm{Br}(\phi \rightarrow \pi ^{0}\gamma )=(1.226\pm 0.036_{-0.089}^{+0.096})\times 10^{-3} \). A comparison of the experimental data with different theoretical models was performed.

Keywords

Experimental Data Experimental Study Theoretical Model Energy Region 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • M.N. Achasov
    • 1
  • A.V. Berdyugin
    • 1
  • A.V. Bozhenok
    • 1
  • D.A. Bukin
    • 1
  • S.V. Burdin
    • 1
  • T.V. Dimova
    • 1
  • V.P. Druzhinin
    • 1
  • M.S. Dubrovin
    • 1
  • I.A. Gaponenko
    • 1
  • V.B. Golubev
    • 1
  • V.N. Ivanchenko
    • 1
  • A.A. Korol
    • 1
  • S.V. Koshuba
    • 1
  • E.V. Pakhtusova
    • 1
  • A.A. Salnikov
    • 1
  • S.I. Serednyakov
    • 1
  • V.V. Shary
    • 1
  • Yu.M. Shatunov
    • 1
  • V.A. Sidorov
    • 1
  • Z.K. Silagadze
    • 1
  1. 1.Budker Institute of Nuclear Physics, 630090 Novosibirsk, RussiaRU

Personalised recommendations