Abstract

Preliminary results of measurement of the cross section for the process e+e → K+K in the range of c.m. energies between 1.075 and 1.975 GeV are presented. An analysis was performed on the basis of an integrated luminosity of 62.9 pb-1 accumulated by employing the CMD-3 detector within the experimental runs of 2019. The suppression of the background from the processes e+e → e+e(γ), and π+π(γ) and the background of cosmic-ray muons was accomplished with the aid of information about specific energy losses of charged particles in the layers of the liquid xenon calorimeter of the CMD-3 detector. The preliminary results of the present measurement of the e+e → K+K cross section are in reasonable agreement with the results of earlier measurements and have a commensurate statistical precision.

Original languageEnglish
Pages (from-to)731-737
Number of pages7
JournalPhysics of Atomic Nuclei
Volume83
Issue number5
DOIs
Publication statusPublished - 1 Sep 2020

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