利用Gursey-Radicati质量公式的扩展预测四夸克态质量

A New Application of the Gursey and Radicati Mass Formula

We study the spin- and flavour- dependent SU(6) violations in the baryon spectrum by means of a Gürsey Radicati mass formula. The average energy of each SU(6)-multiplet is described using the SU(6) invariant interaction given by a hypercentral potential containing a linear and a hypercoulomb term. We show that the non strange and strange baryon masses are in general fairly well reproduced and moreover that the Gürsey Radicati formula holds in a satisfactory way also for the excited states up to 2 GeV. The coefficients of the Gürsey Radicati SU(6) breaking part obtained by the fit of the three-…

利用扩展的Gursey-Radicati形式主义研究完全重夸克五夸克态

Study of Fully heavy Pentaquarks using extended Gursey-Radicati formalism

本文利用扩展的Gursey-Radicati形式主义研究完全重五夸克态的质量谱及其稳定性，通过分析自旋、奇偶性和颜色构型相互作用，为未来实验提供理论依据。

Phenomenological predictions for pentaquark masses from fits to baryon masses

We investigate the mass spectra of exotic hadrons known as pentaquarks. We extend a simple phenomenological model based on the Gürsey-Radicati mass formula for hadrons to include both charmed and bottom baryons as well as to be able to predict masses of pentaquark states including both charm and bottom quark-antiquark pairs. In particular, we perform numerical fits of this model, which includes seven free parameters, to masses of 21 baryons. We find that the model can be well fitted to the experimental values of the baryon masses and observe that the predicted value of about 4400 MeV for the m…

单重重五夸克态的质量与磁矩

Masses and Magnetic Moments of Singly Heavy Pentaquarks

受LHCb发现单重四夸克启发，利用SU(3)味表示和推广的Gursey-Radicati质量公式及有效质量方案，估算单重重五夸克态的质量与磁矩，结果与理论数据吻合，有助未来实验。

隐粲五夸克态的光谱分析

Spectroscopic Analysis of Hidden-Charm Pentaquarks

本文利用多夸克方法和SU(3)味表示分析隐粲五夸克态光谱，计算了$J^P = 5/2^-$态的质量与磁矩，并提出底重子衰变产生机制，结果与实验数据合理一致。

Spectroscopy of pentaquark states

We construct a complete classification of pentaquark states in terms of the spin-flavour SU(6) representations. We find that only some definite SU(3) representations are allowed, singlets, octets, decuplets, anti-decuplets, 27-plets and 35-plets. The latter three contain exotic states, which cannot be constructed from three quarks only. This complete classification scheme is general and model independent and is useful both for model builders and experimentalists. The mass spectrum is obtained from a Gursey-Radicati type mass formula, whose coefficients have been determined previously by a stud…