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Pregled bibliografske jedinice broj: 517374

Časopis

Autori: Ceci, Saša; Döring, Michael; Hanhart, Christoph; Krewald, Siegmund; Meißner, Ulf; Švarc, Alfred
Naslov: Relevance of complex branch points for partial wave analysis
Izvornik: Physical Review C - Nuclear Physics (0556-2813) 84 (2011), 1; 015205-1-015205-7
Vrsta rada: članak
Ključne riječi: complex branch points
Sažetak:
A central issue in hadron spectroscopy is to deduce — and interpret — resonance parameters, namely pole positions and residues, from experimental data, for those are the quantities to be compared to lattice QCD or model calculations. However, not every structure in the observables derives from a resonance pole: the origin might as well be branch points, either located on the real axis (when a new channel comprised of stable particles opens) or in the complex plane (when at least one of the intermediate particles is unstable). In this paper we demonstrate first the existence of such branch points in the complex plane and then show on the example of the πN P11 partial wave that it is not possible to distinguish the structures induced by the latter from a true pole signal based on elastic data alone.
Projekt / tema: 098-0000000-3195
Izvorni jezik: ENG
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Kategorija: Znanstveni
Znanstvena područja:
Fizika
Puni text rada: 517374.CeciDoering2011.pdf (tekst priložen 27. Srp. 2011. u 13:31 sati)
URL Internet adrese: http://prc.aps.org/abstract/PRC/v84/i1/e015205
http://link.aps.org/doi/10.1103/PhysRevC.84.015205
Broj citata:
Altmetric:
DOI: 10.1103/PhysRevC.84.015205
URL cjelovitog teksta:
Google Scholar: Relevance of complex branch points for partial wave analysis
Upisao u CROSBI: svarc@irb.hr (svarc@irb.hr), 28. Lip. 2011. u 09:31 sati



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