CAJ | 학술논문

最近,北京谱仪在J/ψ的辐射衰变中发现,在正反质子的阈附近有反常增强,即可能存在共振态X(1860)和X(1835).针对这一发现,提出了新粒子的三胶子胶球态解释方案,并且应用QCD求和规则计算了此胶球态的质量.考虑到理论上的不确定因素,计算结果表明该胶球态的质量峰位于1.9GeV到2.7GeV之间.事实上,北京谱仪发现的新共振态的确表现出了一些三胶子态的行为.结论是,此新粒子很有可能是重子偶素和胶球态的混合态.
최근,북경보의재J/ψ적복사쇠변중발현,재정반질자적역부근유반상증강,즉가능존재공진태X(1860)화X(1835).침대저일발현,제출료신입자적삼효자효구태해석방안,병차응용QCD구화규칙계산료차효구태적질량.고필도이론상적불학정인소,계산결과표명해효구태적질량봉위우1.9GeV도2.7GeV지간.사실상,북경보의발현적신공진태적학표현출료일사삼효자태적행위.결론시,차신입자흔유가능시중자우소화효구태적혼합태.
Motivated by the recent BES observation of the p(p) enhancement near threshold in radiative J/ψ decays, X(1860) and X(1835), we choose the 0-+ trigluonium state as a possible candidate and calculate its mass with QCD sum rules, which is found to be approximately in the region between 1.9GeV and 2.7GeV with some theoretical uncertainties. With the fact that the new BES resonance exhibits the behavior of this trigluon state, our analyses favor the baryonium-gluonium mixing picture for the BES observation.