Vonk Thomas, Meißner Ulf-G
Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, 53115 Bonn, Germany.
Institute for Advanced Simulation (IAS-4), Forschungszentrum Jülich, 52425 Jülich, Germany.
Eur Phys J A Hadron Nucl. 2025;61(6):135. doi: 10.1140/epja/s10050-025-01602-9. Epub 2025 Jun 16.
We analyze the large- structure of the baryon-baryon potential derived in the framework of SU(3) chiral perturbation theory up to next-to-leading order including contact interactions as well as one-meson and two-meson exchange diagrams. Moreover, we assess the impact of SU(3) symmetry breaking from a large- perspective and show that the leading order results can successfully be applied to the hyperon-nucleon potential. Our results include a reduction of the number of relevant low-energy constants of the leading order contact interaction from fifteen to three, and we show that consistency is preserved if the / ratio is given by 2/3 and the / ratio for the baryon decuplet-to-octet coupling is given by 2.
我们分析了在SU(3)手征微扰理论框架下推导的重子-重子势的大结构，直至次领头阶，包括接触相互作用以及一介子和二介子交换图。此外，我们从大的角度评估了SU(3)对称性破缺的影响，并表明领头阶结果可以成功应用于超子-核子势。我们的结果包括将领头阶接触相互作用的相关低能常数数量从15个减少到3个，并且我们表明，如果/比率由2/3给出，并且重子十重态到八重态耦合的/比率由2给出，则一致性得以保持。
