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arXiv 1008.3154hep-lathep-ph
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用格点量子色动力学预言Omega_bbb质量

Prediction of the Omega_bbb mass from lattice QCD

Stefan Meinel

摘要:

本文用2+1味轻海夸克的格点量子色动力学计算了三重子Omega_bbb的质量。用改进的格点NRQCD实现了b夸克。使用RBC/UKQCD和MILC合作的规范场系综,晶格间距在0.08 fm至0.12 fm的范围内。Omega_bbb质量的最终结果,包括静电校正,是14.371+-0.004(stat)+-0.011(syst)+-0.001(exp)GeV。计算了物理J=3/2态和虚拟J=1/2态之间的超精细分裂。

英文摘要:

The mass of the triply heavy baryon Omega_bbb is calculated in lattice QCD with 2+1 flavors of light sea quarks. The b quark is implemented with improved lattice NRQCD. Gauge field ensembles from both the RBC/UKQCD and MILC collaborations with lattice spacings in the range from 0.08 fm to 0.12 fm are used. The final result for the Omega_bbb mass, which includes an electrostatic correction, is 14.371+-0.004(stat)+-0.011(syst)+-0.001(exp) GeV. The hyperfine splitting between the physical J=3/2 state and a fictitious J=1/2 state is also calculated.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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