This title appears in the Scientific Report :
2021
Please use the identifier:
http://hdl.handle.net/2128/29096 in citations.
Please use the identifier: http://dx.doi.org/10.1140/epjc/s10052-021-09386-0 in citations.
The ${\vec{\Lambda (1405)}}$ in resummed chiral effective field theory
The ${\vec{\Lambda (1405)}}$ in resummed chiral effective field theory
We study the unitarized meson–baryon scattering amplitude at leading order in the strangeness S=−1 sector using time-ordered perturbation theory for a manifestly Lorentz-invariant formulation of chiral effective field theory. By solving the coupled-channel integral equations with the full off-shell...
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Personal Name(s): | Ren, Xiu-Lei (Corresponding author) |
---|---|
Epelbaum, E. / Gegelia, J. / Meißner, U.-G. | |
Contributing Institute: |
Theorie der Starken Wechselwirkung; IAS-4 Theorie der starken Wechselwirkung; IKP-3 |
Published in: | The European physical journal / C, 81 (2021) 7, S. 582 |
Imprint: |
Heidelberg
Springer
2021
|
DOI: |
10.1140/epjc/s10052-021-09386-0 |
Document Type: |
Journal Article |
Research Program: |
TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1140/epjc/s10052-021-09386-0 in citations.
We study the unitarized meson–baryon scattering amplitude at leading order in the strangeness S=−1 sector using time-ordered perturbation theory for a manifestly Lorentz-invariant formulation of chiral effective field theory. By solving the coupled-channel integral equations with the full off-shell dependence of the effective potential and applying subtractive renormalization, we analyze the renormalized scattering amplitudes and obtain the two-pole structure of the Λ(1405) resonance. We also point out the necessity of including higher-order terms. |