Measurement of the proton structure function F2 and of the total photon-proton cross section σγtotp at very low Q2 and very low x

被引：5

作者：

Amelung, C ^{[1
]}

机构：

[1] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

来源：

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 1999年 / 79卷

关键词：

D O I：

10.1016/S0920-5632(99)00667-2

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The proton structure function F-2 has been measured in the range 0.045 GeV2 < Q(2) < 0.65 GeV2 and 6.10(-7) < x < 1.10(-3) using 3.9 pb(-1) of ep --> eX reactions recorded with the ZEUS detector in 1997. The analysis is based on data from the Beam Pipe Calorimeter (BPC) and the Beam Pipe Tracker (BPT). Compared to our previous analysis, the BPT permits improved background suppression and better control of systematic uncertainties, allowing the extension of the kinematic region of the measurement towards lower Q(2) as well as higher and lower y. Significant improvements have also been achieved in the simulation of the hadronic final state via a mixture; of samples of non-diffractive and diffractive Monte Carlo events, generated by the programs DJANGO and RAPGAP.

引用

页码：176 / 178

页数：3

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