6 papers
Determination of -meson distribution amplitudes from transition form factors
Dong-Hao Li, Cai-Dian Lü, Ulf-G. MeiÃner +1
Recent work on , and form factors from lattice QCD and light-cone sum rules has made it possible to constrain the inverse moment of the -meson ligh…
Defect engineering spin centers in interacting many-body Su-Schrieffer-Heeger chains
Lin Wang, Thomas Luu, Ulf-G. MeiÃner
The ability to engineer topologically distinct materials opens the possibility of enabling novel phenomena in low-dimensional nano-systems, as well as manufacturing novel quantum d…
Extraction of the pion-nucleon coupling constant using the effective-range expansion with the left-hand cut
Bo-Yang Liu, Bing Wu, Ji-Wei Fu +3
We apply the generalized effective-range expansion of Phys. Rev. Lett. 135, 011903(2025), which incorporates the left-hand cut from one-pion exchange, to low-energy neutron-proton…
Sunset integrals with up to three mass scales in chiral perturbation theory: a comparative study of the Mellin-Barnes representation technique
Balasubramanian Ananthanarayan, Sumit Banik, Véronique Bernard +3
Sunset integrals are among the simplest of two-loop integrals that appear in perturbative quantum field theories and possess up to four distinct mass scales. By means of integratio…
Chiral dynamics: Quo vadis?
Ulf-G. MeiÃner
I review the status of chiral dynamics. Topics include pion-pion scattering, dynamically generated states in the hadron spectrum and the emergence of two-pole structures, chiral sy…
Finite-volume effects in the -regime
Ulf-G. MeiÃner, Fabian Müller, Akaki Rusetsky
We derive a systematic perturbative expansion for the finite-volume energy spectrum of the non-linear -model in the -regime. The violation of the power-counting rule…