![]() The E(4260) signal stems from radiation, namely, of a f0 by the gluon cloud. The inner part of the cc propagator competes with a much faster process, namely, open-charm decays. The latter reaction depletes the E(4260) signal in particular at resonances and threshold enhancements. literature: hep-ph/0605317 (unpublished) arXiv:0904.4351 (unpublished) PRD79, 111501R arXiv:1005.1010 |