# Study of the Exclusive Initial-State-Radiation Production of the $D\bar{D}$ System

Abstract : A search for charmonium and other new states is performed in a study of exclusive initial-state-radiation production of D Dbar events from electron-positron annihilations at a center-of-mass energy of 10.58 GeV. The data sample corresponds to an integrated luminosity of 384 fb-1 and was recorded by the BABAR experiment at the PEP-II storage ring. The D Dbar mass spectrum shows clear evidence of the psi(3770) plus other structures near 3.9, 4.1, and 4.4 GeV/c^2. No evidence for Y(4260) -> D Dbar is observed, leading to an upper limit of B(Y(4260) -> D Dbar)/B(Y(4260) -> J/psi pi+ pi-) < 1.0 at 90 % confidence level.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00182289
Contributor : Dominique Girod <>
Submitted on : Thursday, October 25, 2007 - 1:57:46 PM
Last modification on : Wednesday, September 16, 2020 - 4:23:37 PM

### Citation

B. Aubert, M. Bona, D. Boutigny, Y. Karyotakis, J.P. Lees, et al.. Study of the Exclusive Initial-State-Radiation Production of the $D\bar{D}$ System. Physical Review D, American Physical Society, 2007, 76, pp.111105. ⟨10.1103/PhysRevD.76.111105⟩. ⟨in2p3-00182289⟩

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