CAJ | 학술논문

北京谱仪(BESⅢ)实验和Belle实验利用两种不同的方法对e+e-→p+p-J/y过程进行了研究。在p±J/y系统中，同时观测到了一个新的带电类粲偶素结构--ZC(3900)。ZC(3900)耦合到粲偶素末态，因此其内部夸克组分应该含有正反粲夸克；同时它还带有电荷，故不可能仅由正反粲夸克组成。ZC(3900)共振态中最少含有4个夸克，极有可能是一个奇特态强子。
북경보의(BESⅢ)실험화Belle실험이용량충불동적방법대e+e-→p+p-J/y과정진행료연구。재p±J/y계통중，동시관측도료일개신적대전류찬우소결구--ZC(3900)。ZC(3900)우합도찬우소말태，인차기내부과극조분응해함유정반찬과극；동시타환대유전하，고불가능부유정반찬과극조성。ZC(3900)공진태중최소함유4개과극，겁유가능시일개기특태강자。
Using data samples collected with the BESIII detector at an e+e-centre-of-mass en-ergy of 4.26 GeV and with the Belle detector on or near the (nS), n=1,…, 5, resonances, the e+e-→p+p-J/y process was investigated through different approaches. Both detectors observed a charged char-monium-like state in the invariant mass distribution of p ± J/y . This new structure, called ZC(3900), couples strongly to a charmonium and is charged, so it cannot be a conventional charmonium state, but can be interpreted as an exotic hadron with at least four quarks.