Analysis of the pentaquark states in the diquark-diquark-antiquark model with QCD sum rules

作者：Wang, Zhi-Gang^*

来源：European Physical Journal C, 2016, 76(3): 142.

DOI：10.1140/epjc/s10052-016-3983-2

• HEAVY BARYON STATES
• VECTOR TETRAQUARK STATES
• REANALYSIS
• Z(C)(4020)
• RESONANCE
• MASSES

In this article, we construct both the axialvector-diquark-axialvector-diquark-antiquark type and the axialvector-diquark-scalar-diquark-antiquark type interpolating currents, then calculate the contributions of the vacuum condensates up to dimension 10 in the operator product expansion, and we study the masses and pole residues of the hidden-charm pentaquark states with the QCD sum rules in a systematic way. In calculations, we use the formula to determine the energy scales of the QCD spectral densities. We take into account the breaking effects of the light quarks, and we obtain the masses of the hidden-charm pentaquark states with the strangeness , which can be confronted with the experimental data in the future.

• 出版日期2016-3-14
• 单位华北电力大学（保定）; 华北电力大学