The ratio of e±p scattering cross sections predicted from the global fit of elastic ep data

被引：7

作者：

Alberico, W. M. ^{[1
,2
]}

Bilenky, S. M. ^{[3
,4
]}

Giunti, C. ^{[1
,2
]}

Graczyk, K. M. ^{[1
,2
,5
]}

机构：

[1] Univ Turin, Dipartimento Fis Teor, I-10125 Turin, Italy

[2] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy

[3] JINR, BLTP, RU-141980 Dubna, Russia

[4] Tech Univ Munich, Phys Dept E15, D-85748 Garching, Germany

[5] Univ Wroclaw, Inst Theoret Phys, PL-50204 Wroclaw, Poland

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2009年 / 36卷 / 11期

关键词：

ELECTRON-PROTON; 2-PHOTON-EXCHANGE;

D O I：

10.1088/0954-3899/36/11/115009

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We present predictions for the value of the cross section ratio sigma(e(+) p -> e(+) p)/sigma(e(-) p -> e(-) p), determined from our fit of the elastic ep cross section and polarization data. In this fit, we took into account the phenomenological two-photon exchange dispersive correction. The cross section ratios which are expected to be measured by the VEPP-3 experiment are computed. The kinematical region which will be covered by the E04-116 JLab experiment is also considered. It is shown that for both experiments the predicted cross section ratios deviate from unity by more than 3 sigma.

引用

页数：7

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