Analysis of the mass and width of the X*(3860) with QCD sum rules

作者：Wang, Zhi-Gang^*

来源：European Physical Journal A, 2017, 53(10): 192.

DOI：10.1140/epja/i2017-12390-6

• VECTOR TETRAQUARK STATES
• PION FORM-FACTOR
• RESONANCE PHYSICS
• STRONG DECAY
• CONSTANTS
• DUALITY
• X(3915)
• X(4500)
• X(4700)
• Y(4360)

In this article, we tentatively assign the X*(3860) to be the C gamma(5) circle times gamma C-5-type scalar tetraquark state and study its mass and width with the QCD sum rules; special attention is paid to calculating the hadronic coupling constants GX eta(c)pi and G(XDD) concerning the tetraquark state. We obtain the values M-X = 3.86 +/- 0.09 GeV and Gamma(X) = 202 +/- 146MeV, which are consistent with the experimental data. The numerical result supports assigning the X*(3860) to be the C gamma(5) circle times gamma C-5-type scalar tetraquark state.

• 出版日期2017-10-6
• 单位华北电力大学（保定）; 华北电力大学