235 citations · 1.1k across the 47 of their papers we have counts for
6 papers · 1 filter
Relativistic chiral description of the nucleon-nucleon scattering
Xiu-Lei Ren, Chun-Xuan Wang, Kai-Wen Li +2
Recently, a relativistic chiral nucleon-nucleon interaction is formulated up to leading order which provides a good description of the phase shifts of partial waves [Chin.…
Pion-nucleon sigma term revisited in covariant baryon chiral perturbation theory
Xiu-Lei Ren, Xi-Zhe Ling, Li-Sheng Geng
We study the latest and ETMC lattice QCD simulations of the nucleon masses and extract the pion-nucleon sigma term utilizing the Feynman-Hellmann theorem in SU(…
Relativistic baryon-baryon interactions in chiral perturbation theory
Xiu-Lei Ren, Kai-Wen Li, Li-Sheng Geng
We report on the recent studies of leading order baryon-baryon interactions in covariant baryon chiral perturbation theory. In the strangeness sector, one can achieve a rathe…
Are there near-threshold Coulomb-like Baryonia?
Li-Sheng Geng, Jun-Xu Lu, Manuel Pavon Valderrama +1
The system can exchange a pion near the mass-shell. Owing to the opposite intrinsic parity of the and , the pion is exchanged in S-wave. This gives…
Towards the discovery of new physics with lepton-universality ratios of decays
Li-Sheng Geng, Benjamín Grinstein, Sebastian Jäger +3
Tests of lepton-universality as rate ratios in transitions can be predicted very accurately in the Standard Model. The deficits with respect to expectations repor…
Hyperon-nucleon Scattering In A Covariant Chiral Effective Field Theory Approach
Kai-Wen Li, Xiu-Lei Ren, Li-Sheng Geng +1
A recently proposed covariant chiral effective field theory approach is applied to study strangeness hyperon-nucleon interactions at leading order. 12 low energy constants a…