Padmanath M, Mathur Nilmani
Institüt fur Theoretische Physik, Universität Regensburg, Universitätsstrase 31, 93053 Regensburg, Germany.
Department of Theoretical Physics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India.
Phys Rev Lett. 2017 Jul 28;119(4):042001. doi: 10.1103/PhysRevLett.119.042001.
We present the ground and excited state spectra of Ω_{c}^{0} baryons with spin up to 7/2 from lattice quantum chromodynamics with dynamical quark fields. Based on our lattice results, we predict the quantum numbers of five Ω_{c}^{0} baryons, which have recently been observed by the LHCb Collaboration. Our results strongly indicate that the observed states Ω_{c}(3000)^{0} and Ω_{c}(3050)^{0} have spin-parity J^{P}=1/2^{-}, the states Ω_{c}(3066)^{0} and Ω_{c}(3090)^{0} have J^{P}=3/2^{-}, whereas Ω_{c}(3119)^{0} is possibly a 5/2^{-} state.
我们展示了来自具有动态夸克场的格点量子色动力学的自旋高达7/2的Ωc0重子的基态和激发态光谱。基于我们的格点结果，我们预测了五个Ωc0重子的量子数，这些重子最近已被大型强子对撞机底夸克实验合作组观测到。我们的结果有力地表明，观测到的态Ωc(3000)0和Ωc(3050)0的自旋宇称J P = 1/2−，态Ωc(3066)0和Ωc(3090)0的J P = 3/2−，而Ωc(3119)0可能是一个5/2−态。
