4.7 Article

Search for resonances decaying to ηcπ+ π- in two-photon interactions

Journal

PHYSICAL REVIEW D
Volume 86, Issue 9, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.86.092005

Keywords

-

Funding

  1. U.S. Department of Energy
  2. National Science Foundation
  3. Natural Sciences and Engineering Research Council (Canada)
  4. Commissariat a l'Energie Atomique
  5. Institut National de Physique Nucleaire et de Physique des Particules (France)
  6. Bundesministerium fur Bildung und Forschung
  7. Deutsche Forschungsgemeinschaft (Germany)
  8. Istituto Nazionale di Fisica Nucleare (Italy)
  9. Foundation for Fundamental Research on Matter (Netherlands)
  10. Research Council of Norway
  11. Ministry of Education and Science of the Russian Federation
  12. Ministerio de Ciencia e Innovacion (Spain)
  13. Science and Technology Facilities Council (United Kingdom)
  14. Marie-Curie IEF program (European Union)
  15. A.P. Sloan Foundation (U.S.)
  16. Binational Science Foundation (U.S.-Israel)
  17. Direct For Mathematical & Physical Scien
  18. Division Of Physics [0969487] Funding Source: National Science Foundation
  19. Science and Technology Facilities Council [ST/K001418/1] Funding Source: researchfish

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We report a study of the process gamma gamma -> X -> eta(c)pi(+)pi(-) , where X stands for one of the resonances chi(c2)(1P), eta(c)(2S), X(3872), X(3915), or chi(c2)(2P). The analysis is performed with a data sample of 473.9 fb(-1) collected with the BABAR detector at the PEP-II asymmetric-energy electron-positron collider. We do not observe a significant signal for any channel, and calculate 90% confidence-level upper limits on the products of branching fractions and two-photon widths Gamma B-x ->gamma gamma(X -> eta(c)pi(+) pi(-)): 15.7 eV for chi(c2)(1P), 133 eV for eta(c)(2S), 11.1 eV for X(3872) (assuming it to be a spin-2 state), 16 eV for X(3915) (assuming it to be a spin-2 state), and 18 eV for chi(c2)(2P). We also report upprt limits on the rations of branching fractions B(eta(c)(2S) -> eta(c)pi(+) pi(-))/B(eta(c)(2S) -> (KSK+)-K-0 pi(-)) < 10.0 and B(chi(c2)(1P) -> eta(c)pi(+) pi(-))/B(chi(c2)(1P) -> (KSK+)-K-0 pi(-)) < 32.9 at the 90% confidence level.

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