S =-1 meson-baryon interaction and the role of isospin filtering processes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F19%3A00504073" target="_blank" >RIV/61389005:_____/19:00504073 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevC.99.035211" target="_blank" >https://doi.org/10.1103/PhysRevC.99.035211</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.99.035211" target="_blank" >10.1103/PhysRevC.99.035211</a>

Jazyk výsledku

angličtina

Název v původním jazyce

S =-1 meson-baryon interaction and the role of isospin filtering processes

Popis výsledku v původním jazyce

A study of the meson-baryon interaction in the S = -1 sector is performed, employing a chiral SU(3) Lagrangian up to next-to-leading order (NLO) and implementing unitarization in coupled channels. The model is constrained by a large set of experimental data, paying special attention to processes that are sensitive to the NLO contributions, such as the K(-)p -> K+Xi(-), K-0 Xi(0) reactions. The consideration of additional cross sections in single isospin channels, K(-)p -> eta Lambda, eta Sigma, has been found to provide NLO low-energy constants of rather similar size. The stability of these constants has also been tested by the inclusion of explicit resonant terms. Predictions for new isospin filtering processes, like the I = 1K(L)(0)p -> K+Xi(0) reaction that could be measured at the proposed secondary K-L(0) beam at Jlab, or the weak decay of the Lambda(b) into a J/Psi and different meson-baryon pairs in I = 0, available at LHCb, are presented. The measurement of such reactions would put valuable constraints on the chiral models describing the S = -1 meson-baryon interaction.

Název v anglickém jazyce

S =-1 meson-baryon interaction and the role of isospin filtering processes

Popis výsledku anglicky

A study of the meson-baryon interaction in the S = -1 sector is performed, employing a chiral SU(3) Lagrangian up to next-to-leading order (NLO) and implementing unitarization in coupled channels. The model is constrained by a large set of experimental data, paying special attention to processes that are sensitive to the NLO contributions, such as the K(-)p -> K+Xi(-), K-0 Xi(0) reactions. The consideration of additional cross sections in single isospin channels, K(-)p -> eta Lambda, eta Sigma, has been found to provide NLO low-energy constants of rather similar size. The stability of these constants has also been tested by the inclusion of explicit resonant terms. Predictions for new isospin filtering processes, like the I = 1K(L)(0)p -> K+Xi(0) reaction that could be measured at the proposed secondary K-L(0) beam at Jlab, or the weak decay of the Lambda(b) into a J/Psi and different meson-baryon pairs in I = 0, available at LHCb, are presented. The measurement of such reactions would put valuable constraints on the chiral models describing the S = -1 meson-baryon interaction.

Druh

J_imp - Článek v periodiku v databázi Web of Science

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 periodika

Physical Review C

ISSN

2469-9985

e-ISSN

—

Svazek periodika

99

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

18

Strana od-do

035211

Kód UT WoS článku

000462904900004

EID výsledku v databázi Scopus

2-s2.0-85063286736