Search for evidence of asymptotic regime of nucleon electromagnetic form factors from a compared analysis in space- and time-like regions

被引：47

作者：

Tomasi-Gustafsson, E ^{[1
]}

Rekalo, MP

机构：

[1] CEA Saclay, DAPNIA, SPhN, F-91191 Gif Sur Yvette, France

[2] Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey

来源：

PHYSICS LETTERS B | 2001年 / 504卷 / 04期

关键词：

D O I：

10.1016/S0370-2693(01)00312-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We compare the existing data about electromagnetic form factors of the proton in the time-like region of momentum transfer (up to s similar or equal to 14 GeV2), with the corresponding data in the space-like region. From the constrains given by the PhragmenLindelof theorem, it turns out that the asymptotic regime can not be reached simultaneously for both form factors (electric and magnetic) in the considered region of momentum transfer. The angular dependence for the annihilation processes, such as (p) over bar + p <----> e(+) + e(-), is sensitive to the asymptotic properties of form factors. (C) 2001 Published by Elsevier Science B.V.

引用

页码：291 / 295

页数：5

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