Measurement of the e (+) e (-) -> eta K (+) K (-) Cross Section by Means of the SND Detector

Achasov M N; Barnyakov A Yu; Barnyakov M Yu; Beloborodov K I; Berdyugin A V; Bogdanchikov A G; Botov A A; Buzykaev A R; Vasiljev A V; Golubev V B; Dimova T V; Druzhinin V P; Zemlyansky I M; Kardapoltsev L V; Kovrizhin D P; Korol A A; Koshuba S V; Kravchenko E A; Kupich A S; Lysenko A P; Martin K A; Melnikova N A; Obrazovsky A E; Onuchin A P; Pakhtusova E V; Perevedentsev E A; Pugachev K V; Skrinsky A N

doi:10.1134/S1063778818020023

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Measurement of the e (+) e (-) -> eta K (+) K (-) Cross Section by Means of the SND Detector

作者：Achasov M N; Barnyakov A Yu; Barnyakov M Yu; Beloborodov K I; Berdyugin A V; Bogdanchikov A G; Botov A A; Buzykaev A R; Vasiljev A V; Golubev V B; Dimova T V; Druzhinin V P; Zemlyansky I M; Kardapoltsev L V; Kovrizhin D P; Korol A A; Koshuba S V; Kravchenko E A; Kupich A S; Lysenko A P; Martin K A; Melnikova N A; Obrazovsky A E; Onuchin A P; Pakhtusova E V; Perevedentsev E A; Pugachev K V; Skrinsky A N

来源：Physics of Atomic Nuclei, 2018, 81(2): 205-213.

DOI：10.1134/S1063778818020023

摘要

The cross section for the process e (+) e (-) -> eta K (+) K (-) wasmeasured at c.m. energies in the range between 1.56 and 2.00 GeV in an experiment with the SND detector at the VEPP-2000 e (+) e (-) collider. The invariant-mass distribution of kaon pairs is consistent with the hypothesis that the transition through the eta phi intermediate state makes a dominant contribution to the transition in question.