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Published May 1, 2014 | Published
Journal Article Open

Cross sections for the reactions e^+e^− → K^0_SK^0_L, K^0_SK^0_Lπ^+π^−, K^0_SK^0_Sπ^+π^−, and K^0_SK^0_SK^+K− from events with initial-state radiation


We study the processes e^+e^− → K^0_SK^0_Lγ, K^0_SK^0_Lπ^+π^−γ, K^0_SK^0_Sπ^+π^−γ, and K^0_SK^0_SK^+K^−γ, where the photon is radiated from the initial state, providing cross section measurements for the hadronic states over a continuum of center-of-mass energies. The results are based on 469 fb^(−1) of data collected with the BABAR detector at SLAC. We observe the ϕ(1020) resonance in the K^0_SK^0_L final state and measure the product of its electronic width and branching fraction with about 3% uncertainty. We present a measurement of the e+e−→K0SK0L cross section in the energy range from 1.06 to 2.2 GeV and observe the production of a resonance at 1.67 GeV. We present the first measurements of the e^+e^− → K^0_SK^0_Lπ^+π^−, K^0_SK^0_Sπ^+π^−, and K^0_SK^0_SK^+K^− cross sections and study the intermediate resonance structures. We obtain the first observations of J/ψ decay to the K^0_SK^0_Lπ^+π^−, K^0_SK^0_Sπ^+π^−, and K^0_SK^0_SK^+K^− final states.

Additional Information

© 2014 American Physical Society. Received 1 April 2014; published 6 May 2014. 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 (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).

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Published - PhysRevD.89.092002.pdf


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August 20, 2023
October 26, 2023