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Nucleon form factors:the space-time connection

Nucleon form factors:the space-time connection
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摘要 Analyticity of nucleon form factors allows to derive sum rules which, using space-like and time-like data as input, can give unique information about behaviors in energy regions not experimentally accessible. Taking advantage from new time-like data on proton-antiproton differential cross section and hence the possibility to separate electric and magnetic form factors also in the time-like region, we verify the consistency of the asymptotic behavior predicted by the perturbative QCD for the proton magnetic form factor. Analyticity of nucleon form factors allows to derive sum rules which, using space-like and time-like data as input, can give unique information about behaviors in energy regions not experimentally accessible. Taking advantage from new time-like data on proton-antiproton differential cross section and hence the possibility to separate electric and magnetic form factors also in the time-like region, we verify the consistency of the asymptotic behavior predicted by the perturbative QCD for the proton magnetic form factor.
作者 S.Pacetti
出处 《Chinese Physics C》 SCIE CAS CSCD 2010年第6期874-876,共3页 中国物理C(英文版)
关键词 dispersion relations nucleon form factors PQCD dispersion relations, nucleon form factors, pQCD
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