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Two bottom Σ b (6097) ± baryons were observed in the final states Λ 0 b π − and Λ 0 b π + in pp collision by LHCb collaboration, whose masses and widths were measured. In a 3 P0 model, the strong decay widths of two ground S-wave and seven excited P -wave Σ b baryons have been systematically computed. Numerical results indicate that the newly observed Σ b (6097) ± are very possibly ΣThe predicted decay widths of Σ b (6097) ± are consistent with experimental measurement from LHCb. In particular, it may be possible to distinguish these two assignments through ratios Γ, which can be measured by experiments in the future. In the meantime, our results support the assignments that Σ ± b and Σ * ± b are the ground S-wave Σ b baryons with J P = 1 2 + and J P = 3 2 + , respectively.

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In this paper, the nucleation behavior of glutaric acid (GA) in solvents with different hydrogen-bond donating (HBD) capabilities was studied using a metastable zone width (MSZW) experiment and modified Sangwal's theory. Through designing different cooling rates, saturation temperatures, and solvents with different HBD capabilities, it is demonstrated that the MSZWs increase when increasing the cooling rate or decreasing the saturation temperature or increasing the HBD capability. Interestingly, under the framework of the classical nucleation theory, we find that the critical nuclei size and critical Gibbs free energy do not monotonically change with the increase of driving force in the three solvents, which means that the solid−liquid interface energy changes with the driving force. Finally, we suggest that with increasing HBD capability, desolvation of glutaric acid becomes more and more difficult, thus leading to a wider metastable zone width, which indicates that desolvation may be the rate-determining step in the nucleation process.

Inspired by the concept of multicomponent reactions, a novel one-pot reaction involving heterocyclic ketene aminals (HKAs), Meldrum's acid and aldehydes has been developed and employed for the construction of a small library of tetrahydropyridinone-fused 1,3-diazaheterocycles.