Advertisement

Isospin

  • Claude Amsler
Chapter
Part of the Lecture Notes in Physics book series (LNP, volume 949)

Abstract

Hadrons with similar masses and same spin and parity are grouped in multiplets of the electric charge. For example, the two charged pions π+ and π (139.6 MeV) and the π0 (135.0 MeV) form a triplet with similar masses. As Table  2.1 shows, the four kaons with masses \(m_{K^\pm }\) = 493.7 MeV and \(m_{K^0}\) = \(m_{\overline {K}^0}\) = 497.6 MeV form two doublets, (K0, K+) and (K, \(\overline {K}^0\)).

References

  1. 1.
    Abele, A., et al.: Phys. Lett. B 411, 361 (1997)ADSCrossRefGoogle Scholar
  2. 2.
    Patrignani, C., et al. (Particle Data Group): Chin. Phys. C 40, 100001 (2016); 2017 updateGoogle Scholar
  3. 3.
    Amsler, C.: Rev. Mod. Phys. 70, 1293 (1998)ADSCrossRefGoogle Scholar
  4. 4.
    Aker, E., et al.: Nucl. Inst. Methods Phys. Res. A 321, 69 (1992)ADSCrossRefGoogle Scholar
  5. 5.
    McDonough, J.E., et al.: Phys. Rev. D 38, 2121 (1988)ADSCrossRefGoogle Scholar
  6. 6.
    Ablikim, M., et al.: Phys. Rev. D 90, 092002 (2014)ADSCrossRefGoogle Scholar

Copyright information

© The Author(s) 2018

Authors and Affiliations

  • Claude Amsler
    • 1
    • 2
  1. 1.Stefan Meyer InstituteAustrian Academy of SciencesViennaAustria
  2. 2.Physics InstituteUniversity of ZurichZurichSwitzerland

Personalised recommendations