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arXiv 2604.04433hep-lathep-phnucl-th
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Sp(4)规范理论中双夸克奇梅拉重子的晶格研究

Lattice studies of chimera baryons in Sp(4) gauge theory

Institute for Basic Science(基础科学研究所);Swansea University(斯旺西大学);The University of Edinburgh(爱丁堡大学);Pusan National University(釜山国立大学);University of Tsukuba(筑波大学)
Jong-Wan Lee, Ed Bennett, Luigi Del Debbio, Niccolò Forzano, Ryan C. Hill, Deog Ki Hong, Ho Hsiao, C. -J. David Lin, Biagio Lucini, Alessandro Lupo, Maurizio Pi… 展开作者

Jong-Wan Lee, Ed Bennett, Luigi Del Debbio, Niccolò Forzano, Ryan C. Hill, Deog Ki Hong, Ho Hsiao, C. -J. David Lin, Biagio Lucini, Alessandro Lupo, Maurizio Piai, Davide Vadacchino, Fabian Zierler

AI总结:

本文研究了在Sp(4)规范理论中双夸克奇梅拉重子的低能谱,探讨其在复合Higgs模型中的角色及贡献。

摘要:

我们研究了奇梅拉重子,即由两个(超)夸克和一个反称表示夸克组成的费米束缚态。在QCD中它们等同于普通重子,但在具有顶夸克部分复合性的复合Higgs模型(CHMs)中,自旋1/2奇梅拉重子作为顶夸克的伙伴,并对其大质量负责。我们对奇梅拉重子的低能谱进行了非微扰的晶格计算,在特定的CHMs实现中基于Sp(4)规范理论。在简并近似下,我们给出了连续和无质量极限下的数值结果。然后,对于动态费米子,我们通过使用新开发的谱密度分析方法,对几种晶格参数的选择测量了谱和矩阵元。

英文摘要:

We study chimera baryons, fermion bound states composed of two (hyper)quarks transforming in the fundamental and one in the antisymmetric representation of a non-Abelian gauge group. While in QCD they coincide with ordinary baryons, in composite Higgs models (CHMs) with top partial compositeness, spin-1/2 chimera baryons serve as partners of the top quark and are responsible for its large mass. We perform non-perturbative lattice calculations of the low-lying spectrum of the chimera baryons, in a specific realization of CHMs based on a Sp(4) gauge theory. In the quenched approximation, we present the numerical results in the continuum and massless limits. Then, for dynamical fermions, we measure the spectrum and matrix elements by employing a newly developed spectral density analysis for several choices of the lattice parameters.

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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