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Few-Body Systems

, 58:17 | Cite as

Charge Symmetry Breaking in Light Hypernuclei

  • Patrick Achenbach
Article
Part of the following topical collections:
  1. The 23rd European Conference on Few-Body Problems in Physics

Abstract

Recently precise \({\varLambda }\)-hyperon ground-state binding energies in light hypernuclei have been determined with novel techniques, in particular with a new generation of magnetic spectrometers. The precision spectroscopy results of \({\varLambda }\) hypernuclei isomultiplets contributed considerably to the study of charge symmetry breaking in the strong interaction. At the Mainz Microtron MAMI the high-resolution spectroscopy of decay-pions in strangeness electro-production was used to extract the ground state binding energy in \(^4_{\varLambda }\)H. This value was compared to the value of the isospin mirror hypernucleus \(^4_{\varLambda }\)He to confirm a sizable breaking of the charge symmetry. A synopsis for the values in the \(A = 7, 8, 9,\) and 10 hypernuclei suggests small or vanishing effects in other isomultiplets. The full understanding of the large and spin-dependent effect in the \(A = 4\) mirror pair remains one of the open issues of hypernuclear physics.

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Copyright information

© Springer-Verlag Wien 2016

Authors and Affiliations

  1. 1.Institut für KernphysikJohannes Gutenberg-UniversitätMainzGermany

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