Nucleon form factors: the space-time connection

Details Nucleon form factors: the space-time connection Nucleon form factors: the space-time connection

2010-12-06

arxiv.org/abs/1012.1232v1

Chin.Phys.C34:874,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 1 figure. Prepared for "PHIPSI09" Conference, October 13-16, 2009 - IHEP, Beijing, China

Scientific paper

10.1088/1674-1137/34/6/043

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.

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