Q1 publikacija: Geometric constraint on residue phases: resolving the N(2190) anomaly and implications for exotic states

Novi rad u prestižnom časopisu Physics Letters B pod nazivom “Geometric constraint on residue phases: resolving the N(2190) anomaly and implications for exotic states” je objavljen u aprilskom izdanju. Koautori rada su dva istraživača sa Odsjeka za fiziku Prirodno-matematičkog fakulteta Univerziteta u Tuzli. Physics Letters B je jedan od najprestižnijih naučnih časopisa u svijetu fizike sa fokusom na brzu objavu značajnih novih rezultata u specifičnim oblastima fundamentalne fizike. Časopis pokriva nekoliko oblasti fizike (fizika elementarnih čestica, nuklearna fizika, kosmologija i astrofizika) i nalazi se u 25% najuticajnijih časopisa u svojoj disciplini u svijetu (Q1).

S. Ceci, R. Omerović, H. Osmanović, M. Uroić, M. Vukšić, B. Zauner, Geometric constraint on residue phases: resolving the N(2190) anomaly and implications for exotic states, Physics Letters B, Volume 875, 2026, 140332, ISSN 0370-2693, https://doi.org/10.1016/j.physletb.2026.140332.

(https://www.sciencedirect.com/science/article/pii/S0370269326001863)

Abstract: 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 ambiguity in prior data; correcting the sign ambiguity yields a phase of −28∘±10∘, matching our prediction. This consistency validates the method as a model-independent diagnostic for distinguishing compact from molecular states, offering a rigorous tool for exotic spectroscopy.

Keywords: Unitary S-matrix; Baryon and meson resonances; Resonant properties