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Measurement of the Cross Section for the Process \(\boldsymbol{e^{+}e^{-}\to K^{+}K^{-}}\) with the CMD-3 Detector

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Abstract

Preliminary results of measurement of the cross section for the process \(e^{+}e^{-}\to K^{+}K^{-}\) 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 \(e^{+}e^{-}\to e^{+}e^{-}(\gamma)\), \(\mu^{+}\mu^{-}(\gamma)\), and \(\pi^{+}\pi^{-}(\gamma)\) 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 \(e^{+}e^{-}\to K^{+}K^{-}\) cross section are in reasonable agreement with the results of earlier measurements and have a commensurate statistical precision.

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Authors and Affiliations

  1. Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

    V. L. Ivanov

  2. Novosibirsk State University (NSU), Novosibirsk, Russia

    V. L. Ivanov

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  1. V. L. Ivanov
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the CMD-3 Collaboration

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Correspondence to V. L. Ivanov.

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CMD-3 collaboration: R. R. Akhmetshin1),2), A. N. Amirkhanov1),2), A. V. Anisenkov1),2), V. M. Aul- chenko1),2), V. Sh. Banzarov1), N. S. Bashtovoy1), D. E. Berkaev1),2), A. E. Bondar1),2), A. V. Bragin1), A. I. Vorobiov1), S. E. Gayazov1),2), A. A. Grebenuk1),2), S. S. Gribanov1),2), D. N. Grigoriev1),2),4), D. A. Epifanov1), A. L. Erofeev1),2), F. V. Ignatov1), S. V. Karpov1), V. F. Kazanin1),2), A. N. Kozyrev1), E.A.Kozyrev1),2), I. A. Koop1),2), A. A. Korobov1),2), P. P. Krokovny1),2), A. S. Kuzmin1),2), I. B. Logashenko1),2), P. A. Lukin1),2), K. Yu. Mikhailov1),2), V. S. Okhapkin1), Yu. N. Pestov1), A. S. Popov1),2), G. P. Razuvaev2), A. A. Ruban1), A. E. Ryzhenenkov1),2), N. M. Ryskulov1), A. V. Semenov1),2), A. L. Sibidanov4), E. P. Solodov1),2), A. A. Talyshev1),2), V. M. Titov1), S. S. Tolmachev1),2), A. A. Uskov1),2), G. V. Fedotovich1),2), V. E. Shebalin1),2), B. A. Shwartz1),2), D. B. Shwartz1),2), Yu. M. Shatunov1), S. I. Eidelman2),1),5), L. B. Epstein1),3), Yu. V. Yudin1).

1) Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia.

2) Novosibirsk National Research State University (NSU), Novosibirsk, 630090 Russia.

3) Novosibirsk State Technical University (NSTU), Novosibirsk, 630073 Russia.

4) Victoria University, Victoria, Canada.

5) Lebedev Physical Institute, Russian Academy of Sciences, Moscow, 119991 Russia.

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Ivanov, V.L., the CMD-3 Collaboration. Measurement of the Cross Section for the Process \(\boldsymbol{e^{+}e^{-}\to K^{+}K^{-}}\) with the CMD-3 Detector. Phys. Atom. Nuclei 83, 731–737 (2020). https://doi.org/10.1134/S1063778820050142

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  • DOI: https://doi.org/10.1134/S1063778820050142

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