On the pole content of coupled channels chiral approaches used for the (K)over-barN system
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F16%3A00463755" target="_blank" >RIV/61389005:_____/16:00463755 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1016/j.nuclphysa.2016.04.031" target="_blank" >http://dx.doi.org/10.1016/j.nuclphysa.2016.04.031</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.nuclphysa.2016.04.031" target="_blank" >10.1016/j.nuclphysa.2016.04.031</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
On the pole content of coupled channels chiral approaches used for the (K)over-barN system
Popis výsledku v původním jazyce
Several theoretical groups describe the antikaon-nucleon interaction at low energies within approaches based on the chiral SU(3) dynamics and including next-to-leading order contributions. We present a comparative analysis of the pertinent models and discuss in detail their pole contents. It is demonstrated that the approaches lead to very different predictions for the K(-)p amplitude extrapolated to subthreshold energies as well as for the K(-)n amplitude. The origin of the poles generated by the models is traced to the so-called zero coupling limit, in which the inter-channel couplings are switched off. This provides new insights into the pole contents of the various approaches. In particular, different concepts of forming the Lambda(1405) resonance are revealed and constraints related to the appearance of such poles in a given approach are discussed.
Název v anglickém jazyce
On the pole content of coupled channels chiral approaches used for the (K)over-barN system
Popis výsledku anglicky
Several theoretical groups describe the antikaon-nucleon interaction at low energies within approaches based on the chiral SU(3) dynamics and including next-to-leading order contributions. We present a comparative analysis of the pertinent models and discuss in detail their pole contents. It is demonstrated that the approaches lead to very different predictions for the K(-)p amplitude extrapolated to subthreshold energies as well as for the K(-)n amplitude. The origin of the poles generated by the models is traced to the so-called zero coupling limit, in which the inter-channel couplings are switched off. This provides new insights into the pole contents of the various approaches. In particular, different concepts of forming the Lambda(1405) resonance are revealed and constraints related to the appearance of such poles in a given approach are discussed.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
BE - Teoretická fyzika
OECD FORD obor
—
Návaznosti výsledku
Projekt
<a href="/cs/project/GA15-04301S" target="_blank" >GA15-04301S: Interakce hadronů s nukleony a jádry</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2016
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Nuclear Physics. A
ISSN
0375-9474
e-ISSN
—
Svazek periodika
954
Číslo periodika v rámci svazku
OCT
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
24
Strana od-do
17-40
Kód UT WoS článku
000381331200004
EID výsledku v databázi Scopus
2-s2.0-84964664551