重子SU(2)多重态中的质量劈裂测量
Measuring Mass Splittings in Baryon SU(2) Multiplets
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中文总结 AI 辅助
本文采用RM123方法，在接近物理夸克质量的扭曲质量系综中，于同位旋破缺参数首阶计算自旋1/2和3/2重子SU(2)多重态的质量劈裂，仅考虑价贡献，并给出初步结果。
中文摘要 AI 辅助
在格点QCD计算中，考虑由电磁相互作用和上-下夸克质量差引起的同位旋破缺修正正变得越来越重要，因为可观测量精度已达到或接近百分之一水平。在此背景下，近年来RM123方法被用于考虑此类同位旋修正。在本工作中，我们采用RM123方法研究重子质量劈裂。我们给出了自旋1/2和自旋3/2重子SU(2)多重态内质量劈裂的初步结果，这些结果使用调谐至接近物理夸克质量的扭曲质量系综获得。我们仅考虑价贡献，劈裂在同位旋破缺参数的首阶计算。
英文摘要
The inclusion of isospin-breaking corrections arising from electromagnetic interactions and the up-down quark mass difference is becoming increasingly important in lattice QCD calculations, as the precision of observables is at or approaching the percent level. In this context, the RM123 method has been employed in recent years to take into account such isospin corrections. In this work, we study baryon mass splittings using the RM123 approach. Preliminary results are presented for the mass splittings within spin-1/2 and spin-3/2 baryon SU(2) multiplets, obtained using twisted-mass ensembles tuned close to physical quark masses. We consider only valence contributions, with the splittings computed at leading order in the isospin-breaking parameters.
发表机构
- The Cyprus Institute（塞浦路斯研究所）
- University of Cyprus（塞浦路斯大学）
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