A dispersion-theoretic study of pion form factor | Zendy

N. K. Pak | Zendy

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A dispersion-theoretic study of pion form factor

Author(s) -

N. K. Pak

Publication year - 1977

Publication title -

il nuovo cimento a

Language(s) - English

Resource type - Journals

ISSN - 0369-3546

DOI - 10.1007/bf02776664

Subject(s) - pion , massless particle , extrapolation , form factor (electronics) , physics , dispersion relation , charge radius , quantum electrodynamics , ambiguity , upper and lower bounds , radius , particle physics , mathematics , quantum mechanics , mathematical analysis , philosophy , computer science , linguistics , computer security , proton

Summary We show that the pion electromagnetic form factor satisfies a nonsubtracted dispersion relation if one of the pions is taken to be massless. We point out that, by quantizing the theory on the light-cone, the mass extrapolation ambiguity due to one of the pions being massless can be overcome. We then use this result to establish an upper bound on the pion charge radius.

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