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Published September 1, 2010 | Published
Journal Article Open

Exclusive production of D_s^+D_s^-, D_s^(*+)D_s^-, and D_s^(*+)D_s^(*-) via e^+e^- annihilation with initial-state radiation

Abstract

We perform a study of exclusive production of D_s^+D_s^-, D_s^(*+)D_s^-, and D_s^(*+)D_s^(*-) final states in initial-state-radiation events from e^+e^- annihilations at a center-of-mass energy near 10.58 GeV, to search for charmonium 1^(--) states. The data sample corresponds to an integrated luminosity of 525 fb^(-1) and was recorded by the BABAR experiment at the PEP-II storage ring. The D_s^+D_s^-, D_s^(*+)D_s^-, and D_s^(*+)D_s^(*-) mass spectra show evidence of the known ψ resonances. Limits are extracted for the branching ratios of the decays X(4260)→D_s^((*)+)D_s^((*)-).

Additional Information

© 2010 American Physical Society. Received 2 August 2010; published 29 September 2010. 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 U.S. Department of Energy and the 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 Ciencia e Innovación (Spain), and the Science and Technology Facilities Council (United Kingdom). Individuals have received support from the Marie-Curie IEF program (European Union), the A. P. Sloan Foundation (USA), and the Binational Science Foundation (USA-Israel).

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