Study of ΛcΛc dibaryon and Λc(Λ)over-barc baryonium states via QCD sum rules

In this article, we construct the six-quark currents with the J(P) = 0(+), 0(-), 1(+) and 1(-) to study the Lambda(c)Lambda(c) dibaryon and Lambda(c)(Lambda) over bar (c) baryonium states via QCD sum rules. We consider the vacuum condensates up to dimension 16 and truncation of the order O(alpha(k)(s)) with k <= 3. The predicted masses are 5.11(-0.)(1)(2)(+0.15) GeV, 4.66(-0.06)(+0.10) GeV, 4.99(-0.09)(+0.10) GeV 4.68(-0.08)(+0.08)( )GeV for the J(P) = 0(+), 0(-), 1(+) and 1(-) states, respectively, which can be confronted to the experimental data in the future considering the high integrated luminosity at the center-of-mass energy about 4.8 GeV at the BESIII. We find the terms with 3/2 < k <= 3 do play a tiny role, and we can ignore these terms safely in the QCD sum rules.

Automated summary

This article constructs six-quark currents to study Lambda(c)Lambda(c) and Lambda(c)(Lambda) (c) baryonium states via QCD sum rules. Predicted mass values are provided and compared to potential experimental data from BESIII at 4.8 GeV. Terms with 3/2 < k <= 3 are found to play a minimal role.