12 papers
New sum rules from exact -spin degeneracy
Chao-Qiang Geng, Chia-Wei Liu, Sheng-Lin Liu +1
We propose a new class of sum rules in the -spin limit, based on the observation that the weak phase in the Standard Model can be removed in the degenerate limit .…
The Negative- Angular-Parameter Puzzle in and Decays
Chao-Qiang Geng, Xiang-Nan Jin, Chia-Wei Liu
Experimental measurements of and decays to octet baryon pairs reveal a negative- puzzle in the angular distributions: , whereas the other…
Strong decays and effective spin-symmetry-breaking corrections in excited charm-strange mesons
Xiao Yu, Chao-Qiang Geng
We study two-body pseudoscalar-emission decays of excited charm-strange mesons in heavy meson effective field theory, where phenomenological \(1/m_c\) corrections are encoded as ef…
Topological quantization of vector meson anomalous couplings
Chao-Qiang Geng, Chia-Wei Liu, Yue-Liang Wu
We identify an overlooked Wess--Zumino--Witten structure in the hidden-local-symmetry~(HLS) formulation of vector mesons. The newly identified term generically leads to the topolog…
Purely Baryonic Weak Decays of Heavy Baryons in Skyrme Model
Chao-Qiang Geng, Chao Han
Purely baryonic weak decays of heavy baryons are investigated within the framework of the Skyrme model. These decays belong to a new class of unobserved decay channels, which would…
Strange Quark Electric Dipole Moment withTopological Anomalies
Chao-Qiang Geng, Xiang-Nan Jin, Chia-Wei Liu +1
We introduce an anomaly-based framework to probe quark electric dipole moments in exclusive hadronic final states produced in annihilation. Chern-Simons-induced anomalous…