Long-distance structure of the X(3872)

11th International Conference on Hyperons, Charm and Beauty Hadrons

Guo, F.-K.^1 ; Hidalgo-Duque, C.^2 ; Nieves, J.^2 ; Ozpineci, A.^3 ; Valderrama, M. Pavón^4

Helmholtz-Institut für Strahlen- und Kernphysik, Bethe Center for Theoretical Physics, Universität Bonn, Bonn

D-53115, Germany^1

Instituto de Física Corpuscular (IFIC), Centro Mixto CSIC-Universidad de Valencia, Institutos de Investigación de Paterna, Aptd. 22085, Valencia

E-46071, Spain^2

Middle East Technical University, Department of Physics, Ankara

TR-06531, Turkey^3

Institut de Physique Nucléaire, Université Paris-Sud, IN2P3/CNRS, Orsay Cedex

F-91406, France^4

关键词: Bound state;    Charmonium;    Decay widths;    Final state interactions;    Heavy-quark;    Interaction strength;    Molecular wave functions;    Precise measurements;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/556/1/012015/pdf
DOI  :  10.1088/1742-6596/556/1/012015

来源: IOP

【 摘 要 】

We investigate heavy quark symmetries for heavy meson hadronic molecules, and explore the consequences of assuming the X(3872) and Zb(10610) as an isoscalar DD¯∗ and an isovector BB¯∗ hadronic molecules, respectively. The symmetry allows to predict new hadronic molecules, in particular we find an isoscalar 1++BB¯∗ bound state with a mass about 10580 MeV and the isovector charmonium partners of the Zb(10610) and the Zb(10650) states. Next, we study the X(3872) → D0D¯0π0three body decay. This decay mode is more sensitive to the long-distance structure of the X(3872) resonance than its J/ψππ and J/ψ3π decays, which are mainly controlled by the short distance part of the X (3872) molecular wave function. We discuss the D0D¯0final state interactions, which in some situations become quite important. Indeed in these cases, a precise measurement of this partial decay width could provide precise information on the interaction strength between the D(∗)D¯(∗) charm mesons.