5 papers
-wave scattering length from lattice QCD
Ziwen Fu, Qu-Zhi Li, Jun Wang
The -wave scattering phase shift is computed by lattice quantum chromodynamics with flavors of Asqtad-improved staggered fermions. The energy-eigenv…
Revisiting Roy-Steiner-equation analysis of pion-kaon scattering from lattice QCD data
Xiong-Hui Cao, Feng-Kun Guo, Zhi-Hui Guo +1
A comprehensive analysis of and amplitudes at large unphysical pion mass for all important partial waves is presented. A set of crossing-…
Gravitational form factors of pions, kaons and nucleons from dispersion relations
Xiong-Hui Cao, Feng-Kun Guo, Qu-Zhi Li +2
The gravitational form factors of pions, kaons and the nucleons are investigated by employing modern dispersive techniques and chiral perturbation theory. We determine the gravitat…
Rigorous Roy-Steiner equation analysis of scattering at unphysical quark masses
Xiong-Hui Cao, Feng-Kun Guo, Zhi-Hui Guo +1
We perform a rigorous analysis of the scattering at an unphysical pion mass 391 MeV using the Roy-Steiner equations, which satisfy unitarity, analyticity and crossing symmetry…
Dispersive Determination of Nucleon Gravitational Form Factors
Xiong-Hui Cao, Feng-Kun Guo, Qu-Zhi Li +1
Being closely connected to the origin of the nucleon mass, the gravitational form factors of the nucleon have attracted significant attention in recent years. We present the first…