Review of the Λ(1405) A curious case of a strangeness resonance

• Published in: The European physical journal. ST, Special topics Vol. 230; no. 6; pp. 1593 - 1607
• Main Author: Mai, Maxim
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-03-2021; Springer Nature B.V
• Subjects: Atomic; Classical and Continuum Physics; Condensed Matter Physics; Materials Science; Measurement Science and Instrumentation; Molecular; Optical and Plasma Physics; Physics; Physics and Astronomy; Resonance; Review; Strangeness; Topics in Light-Quark Physics
• ISSN: 1951-6355; 1951-6401
• DOI: 10.1140/epjs/s11734-021-00144-7

During its long-lasting history, the
Λ
(
1405
)
has become a benchmark for our understanding of the
S
U
(
3
)
hadron dynamics. Starting with its theoretical prediction and later experimental verification, until the most recent debates on the existence of the second broad pole, it emerged as a fruitful research area sparking many theoretical and experimental developments. This review intends to provide the reader with the current status of research on the
Λ
(
1405
)
-resonance, reflecting on historical, experimental and theoretical developments. A common database for experimental results and a comparison of most recent theoretical approaches will be provided in the last two parts of this manuscript.