PT Journal AU Guo, FK Hidalgo-Duque, C Nieves, J Ozpineci, A Pavon Valderrama, M TI Detecting the long-distance structure of the X(3872) SO European Physical Journal C JI Eur. Phys. J. C PY 2014 BP 2885 - 10pp VL 74 IS 5 DI 10.1140/epjc/s10052-014-2885-4 LA English AB We study the decay within a molecular picture for the state. This decay mode is more sensitive to the long-distance structure of the resonance than its and decays, which are mainly controlled by the details of the wave function at short distances. We show that the final state interaction can be important, and that a precise measurement of this partial decay width can provide valuable information on the interaction strength between the charm mesons. ER