Dynamics study of $Z^{+}(4430)$ and X(3872) in molecular picture

Abstract

In this talk, we review our recent work about the dynamical studies of $Z^{+}(4430)$ and X(3872). $Z^{+}(4430)$ can not be explained as a $D_1^{\prime }{D}^{\ast }$ or $D_1{D}^{\ast }$ molecular state only considering one pion exchange potential without the cutoff, which needs to be confirmed by introducing sigma exchange potential and adding the cutoff in the effective potential. One also excludes the possibility of X(3872) as a $D{D}^{\ast }$ molecular state by one pion and one sigma exchanges with the cutoff. Fortunately there exists an S-wave $B{B}^{\ast }$ bound state with $J^{PC}=1^{++}$. we suggest future experiment to search this state.

arXiv comment6 pages, contribution to the Workshop on "Scalar meson and Related topics" (Scadron 70), during Feb 11-16, 2008, at IST, Lisbon, Portugal

Cited by in corpus (6)

• The hidden-charm pentaquark and tetraquark states
• The possible hidden-charm molecular baryons composed of anti-charmed meson and charmed baryon
• Is X(3872) a molecule?
• Possible strange hidden-charm pentaquarks from ${\Sigma }_c^{(\ast )}{\bar{D}}_s^{\ast }$ and ${\Xi }_c^{{(}^{\prime },\ast )}{\bar{D}}^{\ast }$ interactions
• The bound state problem of S-wave heavy quark meson-aitimeson systems
• X(3872) and the bound state problem of $D^0{\bar{D}}^{\ast 0}$ (${\bar{D}}^0{D}^{\ast 0}$) in a chiral quark model