# Status of the $${\mathbf {\Lambda (1405)}}$$ Λ ( 1405 )

Status of the $${\mathbf {\Lambda (1405)}}$$ Λ ( 1405 ) I give an overview of the current status of the lowest s-wave baryon resonance in the strangeness ( $$S=-1$$ S = - 1 ) channel, the $$\varLambda (1405)$$ Λ ( 1405 ) . Recent results from Lattice QCD calculations and new high-precision data from photoproduction experiments are highlighted in this talk. On the theoretical side various directions have been explored over the last two decades on the basis of coupled-channel chiral unitary models. New photoproduction data can be used to reduce statistical uncertainty of the predictions of such models. As for the systematic uncertainties, a recent comparative analysis of modern approaches exhibits many similarities but also large ambiguities in some of the predicted properties of the antikaon-nucleon scattering amplitudes. Some possible ways to reduce such a model dependence are discussed at the end of this manuscript. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Few-Body Systems Springer Journals

# Status of the $${\mathbf {\Lambda (1405)}}$$ Λ ( 1405 )

, Volume 59 (4) – Apr 27, 2018
6 pages

/lp/springer_journal/status-of-the-mathbf-lambda-1405-1405-Uwxz0VP6MN
Publisher
Springer Journals
Subject
Physics; Particle and Nuclear Physics; Nuclear Physics, Heavy Ions, Hadrons; Atomic, Molecular, Optical and Plasma Physics
ISSN
0177-7963
eISSN
1432-5411
D.O.I.
10.1007/s00601-018-1389-4
Publisher site
See Article on Publisher Site

### Abstract

I give an overview of the current status of the lowest s-wave baryon resonance in the strangeness ( $$S=-1$$ S = - 1 ) channel, the $$\varLambda (1405)$$ Λ ( 1405 ) . Recent results from Lattice QCD calculations and new high-precision data from photoproduction experiments are highlighted in this talk. On the theoretical side various directions have been explored over the last two decades on the basis of coupled-channel chiral unitary models. New photoproduction data can be used to reduce statistical uncertainty of the predictions of such models. As for the systematic uncertainties, a recent comparative analysis of modern approaches exhibits many similarities but also large ambiguities in some of the predicted properties of the antikaon-nucleon scattering amplitudes. Some possible ways to reduce such a model dependence are discussed at the end of this manuscript.

### Journal

Few-Body SystemsSpringer Journals

Published: Apr 27, 2018

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