Unfolding the second Riemann sheet with Padé approximations: hunting resonance poles

Autor(en)

Pere Masjuan Queralt

Abstrakt

Based on the mathematically well defined Padé Theory, a theoretically safe new procedure for the extraction of the pole mass and width of resonances is proposed. In particular, thanks to the Montessus de Ballore theorem we are able to unfold the Second Riemann sheet of a amplitude to search the position of the resonant pole in the complex plane. The main advantage of that method is it systematical and model-independent treatment of the prediction and the corresponding errors of the approximation.

Organisation(en)

Teilchenphysik

Journal

Nuclear Physics, Section B, Proceedings Supplements

Band

207-208

Seiten

192-195

Anzahl der Seiten

4

ISSN

0920-5632

DOI

https://doi.org/10.1016/j.nuclphysbps.2010.10.050

Publikationsdatum

2010

Peer-reviewed

Ja

ÖFOS 2012

103036 Theoretische Physik

Link zum Portal

https://ucris.univie.ac.at/portal/de/publications/unfolding-the-second-riemann-sheet-with-pade-approximations-hunting-resonance-poles(985b7b7c-a867-4ba7-ba88-5c5e72a21804).html