Model independent extraction of the pole and Breit-Wigner resonance parameters
High Energy Physics - Phenomenology
2013-10-01 v3
Abstract
We show that a slightly modified Breit-Wigner formula can successfully describe the total cross section even for the broad resonances, from light rho(770) to the heavy Z boson. In addition to mass, width, and branching fraction, we include another resonance parameter that turns out to be directly related to the pole residue phase. The new formula has two mathematically equivalent forms: one with the pole, and the other with the Breit-Wigner parameters.
Keywords
Cite
@article{arxiv.1302.3491,
title = {Model independent extraction of the pole and Breit-Wigner resonance parameters},
author = {S. Ceci and M. Korolija and B. Zauner},
journal= {arXiv preprint arXiv:1302.3491},
year = {2013}
}
Comments
Final version with corrected typo in Eq. (14); 5 pages, 5 figures, 2 tables