5 papers
How elastic unitarity governs resonance peaks and residue phases
S. Ceci, R. Omerović, H. Osmanović +2
Imposing elastic unitarity on resonant amplitudes yields a geometric rule connecting the reaction threshold, S-matrix pole, and Breit-Wigner peak. Validated across six orders of ma…
Rethinking Partial Widths: Unitary Mixing and the Pole Residue
S. Ceci, R. OmeroviÄ, H. OsmanoviÄ +2
The extracted partial decay width of the systematically exceeds its total width (). We demonstrate this anomaly is a natural consequence of S-matrix unita…
Elastic phase shift analysis reveals the geometric origin of the residue phase
S. Ceci, R. OmeroviÄ, H. OsmanoviÄ +3
We show that the complex-plane structure of light hadron resonances is governed by a unified geometric framework where the threshold position plays a decisive role. By applying thi…
Geometric Constraint on Residue Phases: Resolving the N(2190) Anomaly and Diagnosing Exotic States
S. Ceci, R. OmeroviÄ, H. OsmanoviÄ +3
We derive a parameter-free geometric constraint on residue phases dictated by the pole-threshold angle. Using the N(2190) anomaly as a test case, this constraint reveals a sign amb…
No hidden physics in resonance pole residue phase
S. Ceci, R. OmeroviÄ, H. OsmanoviÄ +2
In hadron resonant scattering, there are four fundamental resonant parameters: real and imaginary part of the pole position, and the magnitude and the phase of the residue. Out of…