Analysis of the Possible DD¯s0(2317) and DD¯s1(2460) Molecules with QCD Sum RulesSupported by National Natural Science Foundation of China under Grant No. 11775079

• Published in: Communications in theoretical physics Vol. 71; no. 6
• Main Authors: Di, Zun-Yan, Wang, Zhi-Gang, Yu, Guo-Liang
• Format: Journal Article
• Language: English
• Published: Chinese Physical Society and IOP Publishing Ltd 01.06.2019
• Subjects: molecular state; QCD sum rules
• DOI: 10.1088/0253-6102/71/6/685
• ISSN: 0253-6102

In this article, we assume that there exist the pseudoscalar DD¯s0*(2317) and D*D¯s1*(2460) molecular states Z1,2 and construct the color singlet-singlet molecule-type interpolating currents to study their masses with the QCD sum rules. In calculations, we consider the contributions of the vacuum condensates up to dimension-10 and use the formula μ=MX/Y/Z2−(2Mc)2 to determine the energy scales of the QCD spectral densities. The numerical results, MZ1=4.61−0.08+0.11GeV and MZ2=4.60−0.06+0.07GeV , which lie above the DD¯s0*(2317) and D*D¯s1*(2460) thresholds respectively, indicate that the DD¯s0*(2317) and D*D¯s1*(2460) are difficult to form bound state molecular states, the Z1,2 are probably resonance states.