6 papers · 1 filter
Coupled-channel extension of the effective-range expansion with left-hand cut
Bing Wu, Wen-Jia Wang, Meng-Lin Du +2
We generalize the recently proposed effective-range expansion with a left-hand cut [Phys. Rev. Lett. 135, 011903 (2025)] to a coupled-channel framework. By systematically analyzing…
Deciphering the production mechanism of the LHCb states
Wen-Jia Wang, Meng-Lin Du, Feng-Kun Guo +1
The three narrow pentaquarks , , and observed by LHCb are widely interpreted as hadronic molecules owing to their proximity to the $Σ_c\bar{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…
Low-energy scattering of the and system
Jiang Yan, Xiong-Hui Cao, Meng-Lin Du +1
We investigate the low-energy interactions between the charmonium state and the light pseudoscalar mesons ( and ) within the framework of dispersion relations. We demon…
Effective Range Expansion with the Left-Hand Cut: Higher Order Improvements
Wen-Jia Wang, Bing Wu, Meng-Lin Du +1
A model-independent parameterization of the low-energy scattering amplitude that incorporates the left-hand cut from one-particle exchange, an extension of the conventional effecti…
Effective range expansion with the left-hand cut and its application to the
Meng-Lin Du, Feng-Kun Guo, Bing Wu
The validity range of the widely used traditional effective range expansion can be severely limited by the presence of a left-hand cut near the two-particle threshold. Such a left-…