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Published January 1, 2020 | Submitted + Published
Journal Article Open

Resonances in e⁺e⁻ annihilation near 2.2 GeV


Using the initial-state radiation method, the e⁺e⁻ → K_SK_L cross section from 1.98 to 2.54 GeV is measured in a data sample of 469  fb⁻¹ collected with the BABAR detector. The results are used in conjunction with previous BABAR results for the e⁺e⁻ → K⁺K⁻, e⁺e⁻ → π⁺π⁻, e⁺e⁻ → π⁺π⁻η, and e⁺e⁻ → ω_(ππ) cross sections to investigate the nature of the resonance structure recently observed by the BESIII experiment in the e⁺e⁻ → K⁺K⁻ cross section.

Additional Information

© 2020 Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3. Received 11 December 2019; published 22 January 2020. We are grateful for the extraordinary contributions of our PEP-II colleagues in achieving the excellent luminosity and machine conditions that have made this work possible. The success of this project also relies critically on the expertise and dedication of the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and the kind hospitality extended to them. This work is supported by the US Department of Energy and National Science Foundation, the Natural Sciences and Engineering Research Council (Canada), the Commissariat à l'Energie Atomique and Institut National de Physique Nucléaire et de Physique des Particules (France), the Bundesministerium für Bildung und Forschung and Deutsche Forschungsgemeinschaft (Germany), the Istituto Nazionale di Fisica Nucleare (Italy), the Foundation for Fundamental Research on Matter (The Netherlands), the Research Council of Norway, the Ministry of Education and Science of the Russian Federation, Ministerio de Economía y Competitividad (Spain), the Science and Technology Facilities Council (United Kingdom), and the Binational Science Foundation (U.S.-Israel). Individuals have received support from the Marie-Curie IEF program (European Union) and the A. P. Sloan Foundation (USA).

Attached Files

Published - PhysRevD.101.012011.pdf

Submitted - 1912.04512.pdf


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