No hidden physics in resonance pole residue phase

Ceci, Saša; Omerović, R.; Osmanović, H.; Uroić, Milivoj; Zauner, Branimir (2026) No hidden physics in resonance pole residue phase. Physics Letters B, 872 . ISSN 03702693

	PDF - Published Version - article Available under License Creative Commons Attribution. Download (2MB)
	PDF - Submitted Version - article Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (6MB)

Abstract

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 the four, the last one is the least understood. The search for the residue phase’s physical meaning has focused on model-independent phases of the majority of the lowest-mass resonances. Here, we apply a simple mathematical identity to the amplitude in the complex plane to reveal the exact reason for the noticed regularity and show that there is no room for hidden physical variables in the residue phase.

Item Type:	Article
Uncontrolled Keywords:	Resonant scattering; Unitary S-matrix; Resonant properties; Baryon and meson resonances
Subjects:	NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Divisions:	Division of Experimental Physics
Depositing User:	Ivana Vuglec
Date Deposited:	02 Jul 2026 08:54
URI:	https://fulir.irb.hr:/id/eprint/12026
DOI:	10.1016/j.physletb.2025.140136

Actions (login required)

View Item