The role of the pion pair term in the theory of the weak axial meson exchange currents

  • B. Mosconi
  • P. RicciEmail author
  • E. Truhlık
Original Article


The structure of the weak axial pion exchange current is discussed in various models. It is shown how the interplay of the chiral invariance and the double-counting problem restricts uniquely the form of the pion potential term, to the case when the nuclear dynamics is described by the Schrödinger equation with static nucleon-nucleon potential.


11.40.Ha Partially conserved axial-vector currents 25.30.-c Lepton-induced reactions 


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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2005

Authors and Affiliations

  1. 1.Dipartimento di FisicaUniversità di FirenzeSesto Fiorentino (Firenze)Italy
  2. 2.Sezione di FirenzeIstituto Nazionale di Fisica NucleareSesto Fiorentino (Firenze)Italy
  3. 3.Institute of Nuclear PhysicsAcademy of Sciences of the Czech RepublicŘežCzech Republic

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