论文标题
Lattice QCD的三重迷人Baryons质量分解
Triply charmed baryons mass decomposition from lattice QCD
论文作者
论文摘要
我们介绍了连接的标量矩阵元素的第一个计算以及$ \ frac {3} {2} {2}^{+} $和$ \ frac {3} {2} {2}^{ - } $ triply carmed baryons lattice qcd qccd。结果基于两个$ n_f = 2+1 $ domain wall壁式配置的重叠价式费米，并带有两个晶格间距。相应的Sea Quark Pion块为$ 300 $ MEV和278美元的Mev。对三个诱人的重子质量的分离贡献是通过QCD能量量张量的分解来得出的。连接的魅力夸克矩阵元素对三个魅力巴里昂的贡献约为炭含量的3/2倍。它贡献了总质量的70％。 $ \ frac {3} {2}^{+} $和$ \ frac {3} {2} {2}^{ - } $ triply charmed baryons的质量分裂主要来自$ \ langle h_ {e} \ rangle h_ {e} \ rangle $ QCD Energy-Momentum tensor。还研究了夸克模型的质量分解以进行比较。
We present the first calculation of the connected scalar matrix element and the momentum fraction of charm quark within the$\frac{3}{2}^{+}$ and $\frac{3}{2}^{-}$triply charmed baryons on lattice QCD. The results are based on overlap valence fermions on two ensembles of $N_f=2+1$ domain wall fermion configurations with two lattice spacings. The corresponding sea quark pion masses are $300$ MeV and $278$ MeV. The separated contributions to the triply charmed baryon mass are derived through the decomposition of the QCD energy-momentum tensor. The contribution of the connected charm quark matrix element to the triply charmed baryon is about 3/2 times that of the charmonium. And it contributes almost 70% of the total mass. The mass splitting of $\frac{3}{2}^{+}$ and $\frac{3}{2}^{-}$triply charmed baryons is mainly from $\langle H_{E}\rangle$ of the QCD energy-momentum tensor. A mass decomposition from the quark model is also studied for comparison.
