Study of the process e+e− → K+K− in the center-of-mass energy range 1010–1060 MeV with the CMD-3 detector

Date

2018

Authors

Kozyrev, E.A.
Solodov, E.P.
Akhmetshin, R.R.
Amirkhanov, A.N.
Anisenkov, A.V.
Aulchenko, V.M.
Banzarov, V.S.
Bashtovoy, N.S.
Berkaev, D.E.
Bondar, A.E.

Journal Title

Journal ISSN

Volume Title

Publisher

Physics Letters B

Abstract

The process e+e−→K+K−has been studied using 1.7 ×106events from a data sample corresponding to an integrated luminosity of 5.7 pb−1collected with the CMD-3 detector in the center-of-mass energy range 1010–1060 MeV. The cross section is measured with about 2% systematic uncertainty and is used to calculate the contribution to the anomalous magnetic moment of the muon aK+K−μ=(19.33 ±0.40) ×10−10, and to obtain the φ(1020)meson parameters. We consider the relationship between the e+e−→K+K−and e+e−→K0SK0Lcross sections and compare it to the theoretical prediction.

Description

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Citation

Kozyrev, E.A., Solodov, E.P., Akhmetshin, A.N., Amirkhanov, A.V., Anisenkov, A.V., Aulchenko, V.M., … Yudin, Y.V. (2018). Study of the process e+e− → K+K− in the center-of-mass energy range 1010–1060 MeV with the CMD-3 detector. Physics Letters B, 779, 64-71. https://doi.org/10.1016/j.physletb.2018.01.079