Pion electromagnetic form factor, perturbative QCD, and large-NcRegge models
نویسندگان
چکیده
منابع مشابه
Perturbative Pion Form Factor Reexamined
We recalculate the pion electromagnetic form factor based on the pertur-bative QCD formalism that includes the Sudakov resummation. We take into account the evolution of the pion wave function in b, which represents the transverse extent of the pion. An infrared enhancement is observed when 1/b approaches Λ QCD. We propose to freeze the evolution of the wave function at some scale above Λ QCD ,...
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We study the largeQ 2 behavior of the electromagnetic form factor of the pion, which is viewed as a quarkantiquark bound state in a (nongauge) quantum field theory. When the pion's Bethe-Salpeter wave function is expanded in 0(4) partial waves, it is found that the information needed about the partial-wave amplitudes is their scaling behavior at large momentum and the locations of their poles i...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2008
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.78.034031