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

Result description

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.

Keywords

meson-baryon interactionchiral modelcross section

The result's identifiers

Alternative languages

  • Result language

    angličtina

  • Original language name

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

  • Original language description

    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.

  • Czech name

  • Czech description

Classification

  • Type

    Jimp - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

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

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2019

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Physical Review C

  • ISSN

    2469-9985

  • e-ISSN

  • Volume of the periodical

    99

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    18

  • Pages from-to

    035211

  • UT code for WoS article

    000462904900004

  • EID of the result in the Scopus database

    2-s2.0-85063286736

Basic information

Result type

Jimp - Article in a specialist periodical, which is included in the Web of Science database

Jimp

OECD FORD

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

Year of implementation

2019