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Zeng, Long; Fu, Hai-Bing; Hu, Dan-Dan; Chen, Ling-Li; Cheng, Wei; Wu, Xing-Gang
Physical review. D, 03/2021, Letnik: 103, Številka: 5Journal Article
We make a detailed study on the typical production channel of double charmoniums, ... at the center-of-mass collision energy ... The key component of the process is the form factor FVP(q2), which has been calculated within the QCD light-cone sum rules (LCSR). To improve the accuracy of the derived LCSR, we keep the J/ψ light-cone distribution amplitude up to twist-4 accuracy. Total cross sections for ... at three typical factorization scales are ... respectively. The factorization scale dependence is small, and those predictions are consistent with the BABAR and Belle measurements within errors.(ProQuest: ... denotes formulae omitted.)
