European Physical Journal C: Particles and Fields (Dec 2020)
Measurement of the $$e^+e^- \rightarrow K^+ K^- \pi ^0$$ e + e - → K + K - π 0 cross section with the SND detector
- M. N. Achasov,
- A. Yu. Barnyakov,
- M. Yu. Barnyakov,
- A. A. Baykov,
- K. I. Beloborodov,
- A. V. Berdyugin,
- D. E. Berkaev,
- A. G. Bogdanchikov,
- A. A. Botov,
- A. R. Buzykaev,
- T. V. Dimova,
- V. P. Druzhinin,
- V. B. Golubev,
- L. V. Kardapoltsev,
- A. G. Kharlamov,
- A. A. Korol,
- D. P. Kovrizhin,
- E. A. Kravchenko,
- A. S. Kupich,
- A. P. Lysenko,
- K. A. Martin,
- N. Yu. Muchnoy,
- N. A. Melnikova,
- A. E. Obrazovsky,
- A. P. Onuchin,
- E. V. Pakhtusova,
- E. A. Perevedentsev,
- K. V. Pugachev,
- Y. S. Savchenko,
- S. I. Serednyakov,
- P. Yu. Shatunov,
- Yu. M. Shatunov,
- D. A. Shtol,
- D. B. Shwartz,
- Z. K. Silagadze,
- I. K. Surin,
- Yu. A. Tikhonov,
- Yu. V. Usov,
- I. M. Zemlyansky,
- V. N. Zhabin,
- V. V. Zhulanov
Affiliations
- M. N. Achasov
- Budker Institute of Nuclear Physics, SB RAS
- A. Yu. Barnyakov
- Budker Institute of Nuclear Physics, SB RAS
- M. Yu. Barnyakov
- Budker Institute of Nuclear Physics, SB RAS
- A. A. Baykov
- Budker Institute of Nuclear Physics, SB RAS
- K. I. Beloborodov
- Budker Institute of Nuclear Physics, SB RAS
- A. V. Berdyugin
- Budker Institute of Nuclear Physics, SB RAS
- D. E. Berkaev
- Budker Institute of Nuclear Physics, SB RAS
- A. G. Bogdanchikov
- Budker Institute of Nuclear Physics, SB RAS
- A. A. Botov
- Budker Institute of Nuclear Physics, SB RAS
- A. R. Buzykaev
- Budker Institute of Nuclear Physics, SB RAS
- T. V. Dimova
- Budker Institute of Nuclear Physics, SB RAS
- V. P. Druzhinin
- Budker Institute of Nuclear Physics, SB RAS
- V. B. Golubev
- Budker Institute of Nuclear Physics, SB RAS
- L. V. Kardapoltsev
- Budker Institute of Nuclear Physics, SB RAS
- A. G. Kharlamov
- Budker Institute of Nuclear Physics, SB RAS
- A. A. Korol
- Budker Institute of Nuclear Physics, SB RAS
- D. P. Kovrizhin
- Budker Institute of Nuclear Physics, SB RAS
- E. A. Kravchenko
- Budker Institute of Nuclear Physics, SB RAS
- A. S. Kupich
- Budker Institute of Nuclear Physics, SB RAS
- A. P. Lysenko
- Budker Institute of Nuclear Physics, SB RAS
- K. A. Martin
- Budker Institute of Nuclear Physics, SB RAS
- N. Yu. Muchnoy
- Budker Institute of Nuclear Physics, SB RAS
- N. A. Melnikova
- Budker Institute of Nuclear Physics, SB RAS
- A. E. Obrazovsky
- Budker Institute of Nuclear Physics, SB RAS
- A. P. Onuchin
- Budker Institute of Nuclear Physics, SB RAS
- E. V. Pakhtusova
- Budker Institute of Nuclear Physics, SB RAS
- E. A. Perevedentsev
- Budker Institute of Nuclear Physics, SB RAS
- K. V. Pugachev
- Budker Institute of Nuclear Physics, SB RAS
- Y. S. Savchenko
- Budker Institute of Nuclear Physics, SB RAS
- S. I. Serednyakov
- Budker Institute of Nuclear Physics, SB RAS
- P. Yu. Shatunov
- Budker Institute of Nuclear Physics, SB RAS
- Yu. M. Shatunov
- Budker Institute of Nuclear Physics, SB RAS
- D. A. Shtol
- Budker Institute of Nuclear Physics, SB RAS
- D. B. Shwartz
- Budker Institute of Nuclear Physics, SB RAS
- Z. K. Silagadze
- Budker Institute of Nuclear Physics, SB RAS
- I. K. Surin
- Budker Institute of Nuclear Physics, SB RAS
- Yu. A. Tikhonov
- Budker Institute of Nuclear Physics, SB RAS
- Yu. V. Usov
- Budker Institute of Nuclear Physics, SB RAS
- I. M. Zemlyansky
- Budker Institute of Nuclear Physics, SB RAS
- V. N. Zhabin
- Budker Institute of Nuclear Physics, SB RAS
- V. V. Zhulanov
- Budker Institute of Nuclear Physics, SB RAS
- DOI
- https://doi.org/10.1140/epjc/s10052-020-08719-9
- Journal volume & issue
-
Vol. 80,
no. 12
pp. 1 – 10
Abstract
Abstract The process $$e^+e^-\rightarrow K^+K^-\pi ^0$$ e + e - → K + K - π 0 is studied with the SND detector at the VEPP-2000 $$e^+e^-$$ e + e - collider. Basing on data with an integrated luminosity of 26.4 $$\hbox {pb}^{-1}$$ pb - 1 we measure the $$e^+e^-\rightarrow K^+K^-\pi ^0$$ e + e - → K + K - π 0 cross section in the center-of-mass energy range from 1.28 up to 2 GeV. The measured mass spectrum of the $$K\pi $$ K π system indicates that the dominant mechanism of this reaction is the transition through the $$K^{*}(892)K$$ K ∗ ( 892 ) K intermediate state. The cross section for the $$\phi \pi ^0$$ ϕ π 0 intermediate state is measured separately. The SND results are consistent with previous measurements in the BABAR experiment and have comparable accuracy. We study the effect of the interference between the $$\phi \pi ^0$$ ϕ π 0 and $$K^*K$$ K ∗ K amplitudes. It is found that the interference gives sizable contribution to the measured $$e^+e^- \rightarrow \phi \pi ^0\rightarrow K^+K^-\pi ^0$$ e + e - → ϕ π 0 → K + K - π 0 cross section below 1.7 GeV.
