Exact calculations of a quasibound state in the (K)over-bar (K)over-bar N system

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F15%3A00450502" target="_blank" >RIV/61389005:_____/15:00450502 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevC.92.044001" target="_blank" >http://dx.doi.org/10.1103/PhysRevC.92.044001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.92.044001" target="_blank" >10.1103/PhysRevC.92.044001</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Exact calculations of a quasibound state in the (K)over-bar (K)over-bar N system

Popis výsledku v původním jazyce

For the (K) over bar (K) over bar interaction separable potentials are employed that are fitted to phase shifts obtained from two theoretical models. The first one is a phenomenological (K) over bar (K) over bar potential based on meson exchange, which is derived by SU(3) symmetry arguments from the Julich pi pi - (K) over bar K coupled-channels model. The other interaction is a variant of the first one, which is adjusted to the K K s-wave scattering length recently determined in lattice QCD simulations. The position and width of the (K) over bar (K) over bar N quasibound state is evaluated in two ways: (i) by a direct pole search in the complex energy plane and (ii) using an "inverse determinant" method, where one needs to calculate the determinant ofthe AGS system of equations only for real energies. Aquasibound state is found with binding energy B ((K) over bar (K) over bar N) = 12-26 MeV and width Gamma((K$) over bar (K) over bar N) (=) 61-102 MeV, which could correspond to the ex

Název v anglickém jazyce

Exact calculations of a quasibound state in the (K)over-bar (K)over-bar N system

Popis výsledku anglicky

For the (K) over bar (K) over bar interaction separable potentials are employed that are fitted to phase shifts obtained from two theoretical models. The first one is a phenomenological (K) over bar (K) over bar potential based on meson exchange, which is derived by SU(3) symmetry arguments from the Julich pi pi - (K) over bar K coupled-channels model. The other interaction is a variant of the first one, which is adjusted to the K K s-wave scattering length recently determined in lattice QCD simulations. The position and width of the (K) over bar (K) over bar N quasibound state is evaluated in two ways: (i) by a direct pole search in the complex energy plane and (ii) using an "inverse determinant" method, where one needs to calculate the determinant ofthe AGS system of equations only for real energies. Aquasibound state is found with binding energy B ((K) over bar (K) over bar N) = 12-26 MeV and width Gamma((K$) over bar (K) over bar N) (=) 61-102 MeV, which could correspond to the ex

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BE - Teoretická fyzika

OECD FORD obor

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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

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review. C

ISSN

0556-2813

e-ISSN

—

Svazek periodika

92

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

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Kód UT WoS článku

000362898600001

EID výsledku v databázi Scopus

2-s2.0-84944392459