$Z_c(3900)$ as a Four-Quark State

Abstract

Using the method of QCD Sum Rules, we derive the correlator ${\Pi }^Z$ for a state consisting of two charm quarks and two light quarks, $c\bar{c}u\bar{d}$, and carry out a Borel transform to find ${\Pi }^Z(M_B)$. From this we find the solution that $M_B\simeq 3.9\pm .2$ GeV, showing that the $Zc(3900)$ is a tetra-quark state.

6 pages, 2 figures

References in corpus (4)

• Study of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}J/\psi$ and Observation of a Charged Charmonium-like State at Belle
• Analysis of the X(3872), Z_c(3900) and Z_c(3885) as axial-vector tetraquark states with QCD sum rules
• The Vector and Axial-Vector Charmonium-like States
• Mixed Heavy Quark Hybrid Mesons, Decay Puzzles, and RHIC

Cited by in corpus (3)

• Exotic Hadrons with Heavy Flavors -X, Y, Z and Related States-
• Properties of $Z_c(3900)$ tetraquark in a cold nuclear matter
• Charm, Bottom, Strange Baryon Masses Using QCD Sum Rules