Asymptotic Behavior of Off-Mass-Shell Form Factors
نویسندگان
چکیده
منابع مشابه
Asymptotic Behavior of Form Factors of Composite Particles
The observed rapid fall-off of the proton’s electromagnetic form factor at high spacelike momentum transfer squared q2 may result from compositeness, Here we examine simple models to determine upper bounds on the asymptotic behavior of the form factors derived from them. General requirements of non,’ z relativistic quantum mechanics yield form factors of two-body composites which fall at least ...
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The off–shell electromagnetic vertex of a (pseudo–) scalar particle contains, in general, two form factors F and G which depend, in addition to the squared momentum transfer, on the invariant masses associated with the initial and final legs of the vertex. Chiral perturbation theory to one loop is used to calculate the off–shell form factors of pions and kaons. The formalism of Gasser and Leutw...
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The form factor equations are solved for a SU(N) invariant S-matrix under the assumption that the anti-particle is identified with the bound state of N − 1 particles. The solution is obtained explicitly in terms of the nested off-shell Bethe ansatz where the contribution from each level is written in terms of multiple contour integrals. The general solution is illustrated for some operators, su...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1973
ISSN: 0033-068X
DOI: 10.1143/ptp.49.1755