Garra Ticó, JordiGraugés Pous, EugeniBABAR Collaboration2019-04-042019-04-042007-12-281550-7998https://hdl.handle.net/2445/131455A search for charmonium and other new states is performed in a study of exclusive initial-state-radiation production of D ¯¯¯ D 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 ¯¯¯ D mass spectrum shows clear evidence of the ψ ( 3770 ) plus other structures near 3.9, 4.1, and 4.4     GeV / c 2 . No evidence for Y ( 4260 ) → D ¯¯¯ D is observed, leading to an upper limit of B ( Y ( 4260 ) → D ¯¯¯ D ) / B ( Y ( 4260 ) → J / ψ π + π − ) < 1.0 at 90% confidence level.9 p.application/pdfeng(c) American Physical Society, 2007Física de partículesExperimentsParticle physicsExperimentsinfo:eu-repo/semantics/article5582112019-04-04info:eu-repo/semantics/openAccess