Protonium and Other Exotic p̄-Atoms

  • Jean-Marc Richard
Part of the Ettore Majorana International Science Series book series (EMISS, volume 17)


The spectroscopy of protonium and other p-atoms represents an important part of the experimental program at LEAR. In this review, I shall try to summarize the theoretical aspects of this physics. The analysis involves different types of difficulties: i) first, the electromagnetic effects and relativistic correction should be estimated very accurately; ii) in protonium, there is a delicate interplay of the nuclear and coulombic forces; iii) in the case of heavier nuclei, important many-body and off-shell effects can arise when deriving the p̄-nucleus optical potential from the elementary p̄-nucleon interaction; iv) finally, one should keep in mind the possibility of new phenomena, like long-range hadronic Vander-Waals forces or the exchange of very light particles like axions.


Vacuum Polarization Exotic Atom Delicate Interplay Atomic Sector Hadronic Width 
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Copyright information

© Plenum Press, New York 1984

Authors and Affiliations

  • Jean-Marc Richard
    • 1
    • 2
  1. 1.Division de Physique ThéoriqueBP n°1 IPNOrsayFrance
  2. 2.Université Pierre et Marie CurieFrance

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