Il Nuovo Cimento A (1965-1970)

, Volume 56, Issue 1, pp 207–217 | Cite as

A sum rule for the pion electromagnetic form factor

  • F. Nicolò
  • G. C. Rossi


A method for obtaining a sum rule for the pion electromagnetic form factor is proposed. Numerical evaluations giveFπ(k2)∼F 1 v (k2). Some results about residues of the pion trajectory att=m π 2 for everyk2 are also obtained in the evasive and in the conspiratorial case.


Electromagnetic Form Factor Pion Form Factor Charge Form Factor Proton Form Factor Parity Doublet 
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Правило сумм для электромагнитного форм-фактора пионов


Предлагается метод получения правила сумм для электромагнитного форм-фактора пионов. Численные вычисления дают.Fπ(k2)∼F 1 v (k2). В «конспиративном» и «неуловимом» случаях также получены некоторые результаты относительно вычета для траетории пиона приt=m π 2 для каждогоk2.


Si propone un metodo per ottenere una regola di somma per il fattore di forma elettromagnetico del pione. Numericamente si ottieneFπ(k2)∼F 1 v (k2). Si ricavano inoltre alcuni risultati sui residui della traiettoria del pione at=m π 2 e per ognik2, nel caso di evasione e nel caso di cospirazione.


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Copyright information

© Società Italiana di Fisica 1968

Authors and Affiliations

  • F. Nicolò
    • 1
  • G. C. Rossi
    • 2
  1. 1.Istituto di Fisica dell’ UniversitàRoma
  2. 2.Laboratori Nazionali del CNENFrascati (Roma)

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