235 citations · 1.1k across the 47 of their papers we have counts for
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Meson-baryon scattering up to the next-to-next-to-leading order in covariant baryon chiral perturbation theory
Jun-Xu Lu, Li-Sheng Geng, Xiu-Lei Ren +1
We study the scattering of a pseudoscalar meson off one ground state octet baryon in covariant baryon chiral perturbation theory (BChPT) up to the next-to-next-to-leading order. Th…
Covariant chiral nucleon-nucleon contact Lagrangian up to order
Yang Xiao, Li-Sheng Geng, Xiu-Lei Ren
We adopt a covariant version of the naive dimensional analysis and construct the chiral two-nucleon contact Lagrangian constrained by Lorentz, parity, charge conjugation, hermitian…
Possible bound states with hidden bottom from systems
Xiu-Lei Ren, Zhi-Feng Sun
We study the three-body systems of by solving the Faddeev equations in the fixed-center approximation, where the light particle …
How (not) to renormalize integral equations with singular potentials in effective field theory
E. Epelbaum, A. M. Gasparyan, J. Gegelia +1
We discuss the connection between the perturbative and non-perturbative renormalization and related conceptual issues in the few-nucleon sector of the low-energy effective field th…
Relativistic Brueckner-Hartree-Fock in nuclear matter without the average momentum approximation
Hui Tong, Xiu-Lei Ren, Peter Ring +3
Brueckner-Hartree-Fock theory allows to derive the -matrix as an effective interaction between nucleons in the nuclear medium. It depends on the center of mass momentum …
mesons with hidden charm arising from and dynamics
Xiu-Lei Ren, Brenda B. Malabarba, Li-Sheng Geng +2
Inspired by the recent discovery of the pentaquark states and , which can be viewed as excited nucleon states with hidden charm, we study the three-body inte…
Octet baryon magnetic moments at next-to-next-to-leading order in covariant chiral perturbation theory
Yang Xiao, Xiu-Lei Ren, Jun-Xu Lu +2
We calculate the octet baryon magnetic moments in covariant baryon chiral perturbation theory with the extended-on-mass-shell renormalization scheme up to next-to-next-to-leading o…
Towards a relativistic formulation of baryon-baryon interactions in chiral perturbation theory
Xiu-Lei Ren, Kai-Wen Li, Li-Sheng Geng
In this talk, we report on two recent studies of relativistic nucleon-nucleon and hyperon-nucleon interactions in covariant chiral perturbation theory, where they are constructed u…