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Hadronic Matrix Elements and the pi+ pi0 Mass Difference

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Bardeen, William A. [Fermilab] Bijnens, J. [Munich U.] Gérard, Jean-Marc [UCL]

We estimate the π+-π0 electromagnetic mass difference within the 1/N expansion approach to hadronic matrix elements. Perturbative QCD and a truncated meson theory describe the high- and low-photon-loop-momentum contributions, respectively. The matching between these complementary pictures for strong interactions is discussed.

Document type Article de périodique (Journal article) – Article de recherche
Publication date 1989
Language Anglais
Journal information "Physical Review Letters" - Vol. 62, no. 12, p. 1343–1346 (1989)
Peer reviewed yes
Publisher American Physical Society ((United States) New-York )
issn 0031-9007
Publication status Publié
Affiliations Fermilab
Munich U.
UCL - SST/IRMP - Institut de recherche en mathématique et physique
Links
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Bibliographic reference Bardeen, William A. ; Bijnens, J. ; Gérard, Jean-Marc. Hadronic Matrix Elements and the pi+ pi0 Mass Difference. In: Physical Review Letters, Vol. 62, no. 12, p. 1343–1346 (1989)
Permanent URL http://hdl.handle.net/2078.1/73899