Perturbative QCD and electromagnetic form factors
نویسندگان
چکیده
منابع مشابه
Hadronic Form Factors and Perturbative Qcd
The electromagnetic form factors of hadrons at large momentum transfer have been the subject of intense theoretical and experimental scrutiny over the past two decades, yet there is still not a universally-accepted framework for their description. This review is a synopsis of their current status at large momentum transfer. The basic theoretical approaches to form factors at large momentum tran...
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Its value depends on the shape of φπ(x). In particular, using the asymptotic form[2, 1] φ as π (x) = 6fπx(1 − x) one obtains I0 = 3fπ which gives the F as γγ∗π0(Q ) = 4πfπ/Q 2 prediction for the large-Q behavior[1]. Brodsky and Lepage[1] proposed the interpolation formula F γγ∗π0(Q ) = 1/[πfπ(1 + Q2/s0)] which reproduces, for s0 = 4π f π , both the Q 2 = 0 value and the high-Q behavior. The sam...
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C. Alexandrou , G. Koutsou a J. W. Negele b and A. Tsapalis c a Department of Physics, University of Cyprus, CY-1678 Nicosia, Cyprus b Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, U.S.A. c Institute for Accelerating Systems and Applications, University of Athens, Athens,Greece. (D...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1987
ISSN: 0556-2821
DOI: 10.1103/physrevd.36.2060