Analysis of the Possible D■_(s0)~*(2317) and D~*■_(s1)~*(2460) Molecules with QCD Sum Rules

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英文篇名：Analysis of the Possible D■_(s0)~*(2317) and D~*■_(s1)~*(2460) Molecules with QCD Sum Rules 作者：狄尊燕 ; 王志刚 ; 于国梁 英文作者：Zun-Yan Di;Zhi-Gang Wang;Guo-Liang Yu;Department of Physics, North China Electric Power University;School of Nuclear Science and Engineering, North China Electric Power University; 英文关键词：molecular state;;QCD sum rules 中文刊名：CITP 英文刊名：理论物理(英文版) 机构：Department of Physics North China Electric Power University;School of Nuclear Science and Engineering North China Electric Power University; 出版日期：2019-06-01 出版单位：Communications in Theoretical Physics 年：2019 期：v.71 基金：Supported by National Natural Science Foundation of China under Grant No.11775079 语种：英文; 页：CITP201906009 页数：12 CN：06 ISSN：11-2592/O3 分类号：61-72

摘要

In this article, we assume that there exist the pseudoscalar D■_(s0)~*(2317) and 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 formulaμ =(M_(X/Y/Z)~2 -(2 Mc)~2)~(1/2) to determine the energy scales of the QCD spectral densities. The numerical results, M_(Z1)=4.61_(-0.08)~(+0.11) GeV and MZ2= 4.60_(-0.06)~(+0.07) GeV, which lie above the D■_(s0)~*(2317) and D*■_(s1)~*(2460) thresholds respectively,indicate that the D■_(s0)~*(2317) and D*■_(s1)~*(2460) are difficult to form bound state molecular states, the Z1,2 are probably resonance states.
        In this article, we assume that there exist the pseudoscalar D■_(s0)~*(2317) and 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 formulaμ =(M_(X/Y/Z)~2 -(2 Mc)~2)~(1/2) to determine the energy scales of the QCD spectral densities. The numerical results, M_(Z1)=4.61_(-0.08)~(+0.11) GeV and MZ2= 4.60_(-0.06)~(+0.07) GeV, which lie above the D■_(s0)~*(2317) and D*■_(s1)~*(2460) thresholds respectively,indicate that the D■_(s0)~*(2317) and D*■_(s1)~*(2460) are difficult to form bound state molecular states, the Z1,2 are probably resonance states.

引文

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