One-pion exchange in the X(3872) revisited
Yu. S. Kalashnikova+, A. V. Nefediev+*×°
+Institute of Theoretical and Experimental Physics, 117218 Moscow, Russia
*National Research Nuclear University "MEPhI", 115409 Moscow, Russia
°Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia
×All-Russia Research Institute of Automatics, 127055 Moscow, Russia
Abstract
We re-examine one-pion exchange as a possible binding mechanism in the
X(3872) charmonium-like state and argue it to be not sufficiently binding for this
purpose. We conclude therefore that other
short-range dynamics are responsible for the X formation.