Studies of kaonic atoms and nuclei

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F19%3A00509990" target="_blank" >RIV/61389005:_____/19:00509990 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/19:00338403

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.5118381" target="_blank" >http://dx.doi.org/10.1063/1.5118381</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.5118381" target="_blank" >10.1063/1.5118381</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Studies of kaonic atoms and nuclei

Popis výsledku v původním jazyce

This contribution reviews recent studies of kaonic atoms and nuclei performed by the Jerusalem-Prague Collaboration using K- optical potentials derived from state-of-the-art chirally-motivated meson-baryon coupled-channel interaction models. Underlying free-space K-N scattering amplitudes are modified to account for in-medium effects caused by Pauli blocking. Strong energy dependence of the amplitudes near threshold is treated self-consistently, which leads to substantial downward subthreshold energy shift. Thorough analyses of kaonic atoms revealed that these K- optical potentials derived within chiral EFT approaches have to be supplemented by a phenomenological term representing K- multi-nucleon interactions in the medium in order to achieve good fits of strong-interaction level shifts and widths in kaonic atoms across the periodic table. It is found that only two of the considered models are simultaneously capable of reproducing the single-nucleon K- absorption fractions at rest from bubble chamber experiments. These models are then applied in optical model calculations of kaonic nuclei. The K- multi-nucleon absorption is found to have a decisive impact on the widths of K--nuclear quasi-bound states which are excessively large. The detection of kaonic nuclear states is thus most probably limited to the lightest few-body nuclear systems.

Název v anglickém jazyce

Studies of kaonic atoms and nuclei

Popis výsledku anglicky

This contribution reviews recent studies of kaonic atoms and nuclei performed by the Jerusalem-Prague Collaboration using K- optical potentials derived from state-of-the-art chirally-motivated meson-baryon coupled-channel interaction models. Underlying free-space K-N scattering amplitudes are modified to account for in-medium effects caused by Pauli blocking. Strong energy dependence of the amplitudes near threshold is treated self-consistently, which leads to substantial downward subthreshold energy shift. Thorough analyses of kaonic atoms revealed that these K- optical potentials derived within chiral EFT approaches have to be supplemented by a phenomenological term representing K- multi-nucleon interactions in the medium in order to achieve good fits of strong-interaction level shifts and widths in kaonic atoms across the periodic table. It is found that only two of the considered models are simultaneously capable of reproducing the single-nucleon K- absorption fractions at rest from bubble chamber experiments. These models are then applied in optical model calculations of kaonic nuclei. The K- multi-nucleon absorption is found to have a decisive impact on the widths of K--nuclear quasi-bound states which are excessively large. The detection of kaonic nuclear states is thus most probably limited to the lightest few-body nuclear systems.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

AIP Conference Proceedings

ISBN

978-0-7354-1872-1

ISSN

0094-243X

e-ISSN

—

Počet stran výsledku

8

Strana od-do

020013

Název nakladatele

American Institute of Physics Inc.

Místo vydání

Melville

Místo konání akce

Portsmouth

Datum konání akce

24. 6. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000557835700013