2021Unpublished venueOpen access

Axial-Vector Currents and Chiral Symmetry

Ubbi Sauerwein

Open full text 0 citations

Abstract

In this work we consider the axial-vector form factors of the nucleon in flavor-SU(2) and of the baryon octet in flavor-SU(3) Chiral Perturbation Theory.We include the ∆-isobar and the baryon decuplet as explicit degrees of freedom and focus on their consistent treatment in terms of chiral power counting.We employ the use of on-shell meson and baryon masses in the one-loop contributions to the axial-vector form factors.The convergence properties of such an approach are scrutinized.Our results are compared to the available flavor-SU(2) QCD lattice data. AbstraktIn dieser Thesis betrachten wir die Axialvektor-Formfaktoren des Nukleons in Flavor-SU(2) und des Baryon Oktetts in Flavor-SU(3) chiraler St örungstheorie.Wir ber ücksichtigen das ∆-Isobar und das Baryon Dekuplett als explizite Freiheitsgrade mit besonderem Schwerpunkt auf deren konsistente Behandlung in Bezug auf das chirale Z ählschema.Wir verwenden On-Shell Meson-und Baryonmassen in den Ein-Schleifenbeitr ägen zu den Axialvektor-Formfaktoren.Die Konvergenzeigenschaften eines solchen Verfahrens werden detailliert analysiert.Unsere Resultate vergleichen wir mit den verf ügbaren Flavor-SU(2) QCD-Gitterdaten.

Open-access reader

About this research paper

What this paper is about

In this work we consider the axial-vector form factors of the nucleon in flavor-SU(2) and of the baryon octet in flavor-SU(3) Chiral Perturbation Theory.We include the ∆-isobar and the baryon decuplet as explicit degrees of freedom and focus on their consistent treatment in terms of chiral power counting.We employ the use of on-shell meson and baryon masses in the one-loop contributions to the axial-vector form factors.The convergence properties of such an approach are scrutinized.Our results are compared to the available flavor-SU(2) QCD lattice data. AbstraktIn dieser Thesis betrachten wir die Axialvektor-Formfaktoren des Nukleons in Flavor-SU(2) und des Baryon Oktetts in Flavor-SU(3) chiraler St örungstheorie.Wir ber ücksichtigen das ∆-Isobar und das Baryon Dekuplett als explizite Freiheitsgrade mit besonderem Schwerpunkt auf deren konsistente Behandlung in Bezug auf das chirale Z ählschema.Wir verwenden On-Shell Meson-und Baryonmassen in den Ein-Schleifenbeitr ägen zu den Axialvektor-Formfaktoren.Die Konvergenzeigenschaften eines solchen Verfahrens werden detailliert analysiert.Unsere Resultate vergleichen wir mit den verf ügbaren Flavor-SU(2) QCD-Gitterdaten.

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

In this work we consider the axial-vector form factors of the nucleon in flavor-SU(2) and of the baryon octet in flavor-SU(3) Chiral Perturbation Theory.We include the ∆-isobar and the baryon decuplet as explicit degrees of freedom and focus on their consistent treatment in terms of chiral power counting.We employ the use of on-shell meson and baryon masses in the one-loop contributions to the axial-vector form factors.The convergence properties of such an approach are scrutinized.Our results are compared to the available flavor-SU(2) QCD lattice data. AbstraktIn dieser Thesis betrachten wir die Axialvektor-Formfaktoren des Nukleons in Flavor-SU(2) und des Baryon Oktetts in Flavor-SU(3) chiraler St örungstheorie.Wir ber ücksichtigen das ∆-Isobar und das Baryon Dekuplett als explizite Freiheitsgrade mit besonderem Schwerpunkt auf deren konsistente Behandlung in Bezug auf das chirale Z ählschema.Wir verwenden On-Shell Meson-und Baryonmassen in den Ein-Schleifenbeitr ägen zu den Axialvektor-Formfaktoren.Die Konvergenzeigenschaften eines solchen Verfahrens werden detailliert analysiert.Unsere Resultate vergleichen wir mit den verf ügbaren Flavor-SU(2) QCD-Gitterdaten.

Key concepts: Chiral perturbation theory, Physics, Particle physics, Pseudovector, Baryon, Octet, Quantum chromodynamics, Lattice QCD

Related papers

Back to paper searchBrowse research topicsOriginal source
Axial-Vector Currents and Chiral Symmetry — Research Paper | ScholarLens