TY - JOUR

T1 - Study of the Process (Formula presented.) with the CMD-3 Detector

AU - CMD-3 Collaboration

AU - Uskov, A. A.

AU - Fedotovich, G. V.

AU - Ivanov, V. L.

AU - Shemyakin, D. N.

N1 - Funding Information: This work was supported by Russian Foundation for Basic Research, grants nos. 20-52-00008 Bel_a (analysis of dynamics of the process ) and 17-02-00897 (method for signal-event selection). Publisher Copyright: © 2021, Pleiades Publishing, Ltd. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/1

Y1 - 2021/1

N2 - A preliminary result of an analysis of the process (Formula presented.) whose cross section was measured in the range of center-of-mass collision energies between 1.2 and 2 GeV is presented. The analysis is based on the data sample corresponding to an integrated luminosity of about 120 pb-1 accumulated with the CMD-3 detector at the VEPP-2000 electron–positron collider. A procedure for separating signal events is developed, and the dominance of the K*(892)K neutral mode is confirmed. The cross section for the process (Formula presented.) is measured to a precision higher than that in earlier experiments. This permits improving the accuracy in measuring the mass and width of the φ(1680) meson, testing the accuracy of the isotopic relations, and more accurately calculating the hadronic contribution to the muon anomalous magnetic moment (g-2).

AB - A preliminary result of an analysis of the process (Formula presented.) whose cross section was measured in the range of center-of-mass collision energies between 1.2 and 2 GeV is presented. The analysis is based on the data sample corresponding to an integrated luminosity of about 120 pb-1 accumulated with the CMD-3 detector at the VEPP-2000 electron–positron collider. A procedure for separating signal events is developed, and the dominance of the K*(892)K neutral mode is confirmed. The cross section for the process (Formula presented.) is measured to a precision higher than that in earlier experiments. This permits improving the accuracy in measuring the mass and width of the φ(1680) meson, testing the accuracy of the isotopic relations, and more accurately calculating the hadronic contribution to the muon anomalous magnetic moment (g-2).

UR - http://www.scopus.com/inward/record.url?scp=85104311477&partnerID=8YFLogxK

U2 - 10.1134/S1063778821010221

DO - 10.1134/S1063778821010221

M3 - Article

AN - SCOPUS:85104311477

VL - 84

SP - 45

EP - 51

JO - Physics of Atomic Nuclei

JF - Physics of Atomic Nuclei

SN - 1063-7788

IS - 1

ER -