The constraining effect of isospin filtering processes in low energy meson-baryon interactions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F19%3A00509988" target="_blank" >RIV/61389005:_____/19:00509988 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.5118410" target="_blank" >http://dx.doi.org/10.1063/1.5118410</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.5118410" target="_blank" >10.1063/1.5118410</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The constraining effect of isospin filtering processes in low energy meson-baryon interactions

Popis výsledku v původním jazyce

Motivated by the recent precise SIDDHARTA measurement of the energy shift and width of kaonic hydrogen, we have revisited the theoretical study of the meson-baryon interaction in the S = -1 sector, employing a chiral SU(3) lagrangian up to next-to-leading order (NLO) and implementing unitarization in coupled channels. The parameters of the model have been fitted to a large set of experimental data, paying attention to processes that are especially sensitive to the NLO terms, such as the K- p (rightarrow) K+Xi-, K0 Xi0 reactions. Explicit resonant terms have been included to explore their effects on the stability of the low-energy constants and the data description. We have also studied the role of new single isospin reactions and have found them to provide more homogeneous and reliable NLO parameters. We conclude that additional isospin filtering processes, like the KL0p(rightarrow)K+Xi0 reaction that could be measured at the proposed secondary KL0 beam at Jlab, would put valuable constraints on the chiral models describing the S = -1 meson-baryon interaction.

Název v anglickém jazyce

The constraining effect of isospin filtering processes in low energy meson-baryon interactions

Popis výsledku anglicky

Motivated by the recent precise SIDDHARTA measurement of the energy shift and width of kaonic hydrogen, we have revisited the theoretical study of the meson-baryon interaction in the S = -1 sector, employing a chiral SU(3) lagrangian up to next-to-leading order (NLO) and implementing unitarization in coupled channels. The parameters of the model have been fitted to a large set of experimental data, paying attention to processes that are especially sensitive to the NLO terms, such as the K- p (rightarrow) K+Xi-, K0 Xi0 reactions. Explicit resonant terms have been included to explore their effects on the stability of the low-energy constants and the data description. We have also studied the role of new single isospin reactions and have found them to provide more homogeneous and reliable NLO parameters. We conclude that additional isospin filtering processes, like the KL0p(rightarrow)K+Xi0 reaction that could be measured at the proposed secondary KL0 beam at Jlab, would put valuable constraints on the chiral models describing the S = -1 meson-baryon interaction.

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

040013

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

000557835700042