Abstract
On the statistics of ~1.7 × 108 interactions of positively charged kaons on copper nuclei, coherent events of the K+π0 system production are selected. The cross sections for the Coulomb and coherent strong components and their interference in the region of the K*(892) meson are measured. The partial width for the decay K*(892) → K+γ is determined. When studying the mass spectrum of the K+π0 system, an effect which can be interpreted as the interference of the chiral anomaly and the K*(892) s-channel amplitudes is found. This gives an estimate for the ratio of the observed amplitude of the chiral anomaly to the theoretical one: Aexp/Ath = 0.9 ± 0.24(stat.) ± 0.3(syst.).
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
O. Zaimidoroga, Phys. Part. Nucl. 30, 1 (1999).
R. Rogalyov, Phys. At. Nucl. 64, 68 (2001);
R. Rogalev, Preprint No. 2000-3 (Inst. High Energy Phys., Protvino, 2000).
V. Burtovoy, Phys. At. Nucl. 76, 450 (2013).
M. Vysotsky and E. Zhemchugov, Phys. Rev. D 93, 094029 (2016).
S. Gevorkyan et al., Phys. Rev. C 80, 055201 (2009); arxiv: 0903.4715.
S. Gevorkyan et al., Primex Note, No. 45 (2007). www.jlab.org/primex.
W. Czyz et al., Ann. Phys. 42, 97 (1967).
G. Faldt, Phys. Rev. B 2, 846 (1970).
G. Faldt, Nucl. Phys. B 43, 591 (1972).
C. Bemporad et al., Nucl. Phys. B 51, 1 (1973).
A. Sadovsky et al., Eur. Phys. J. C 78, 92 (2018).
P.A. Zyla et al. (Particle Data Group), Prog. Theor. Exp. Phys. 2020, 083C01 (2020). http://pdg.lbl.gov/2019/tables/rpp2019-sum-mesons.pdf.
C. Chandlee et al., Phys. Rev. Lett. 51, 168 (1983).
S. Adler, Phys. Rev. 177, 2426 (1969);
J. Bell and R. Jackiw, Nuovo Cim. 60, 147 (1969).
J. Wess and B. Zumino, Phys. Lett. B 37, 95 (1971);
E. Witten, Nucl. Phys. B 223, 422 (1983).
M. Terent’ev, Phys. Lett. B 38, 419 (1972);
M. V. Terent’ev, Sov. Phys. Usp. 15, 20 (1972).
B. Holstein, arXiv:hep-ph/9512338v1.
G. J. Gounaris and J. J. Sakurai, Phys. Rev. Lett. 21, 244 (1968).
ACKNOWLEDGMENTS
We are grateful to M.I. Vysotsky, A.A. Godizov, E.V. Zhemchugov, A.K. Likhoded, and M.L. Nekrasov for the numerous discussions. The work was performed with the support of the Russian Foundation for Basic Research, grant no. 18-02-00179a.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Burtovoy, V.S., Akimenko, S.A., Artamonov, A.V. et al. The Coherent Production of the (K +π0) System by K + Beam on Copper Nuclei at the OKA Setup. J. Exp. Theor. Phys. 131, 928–939 (2020). https://doi.org/10.1134/S1063776120120018
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063776120120018