Is the electron radiation length constant at high energies?

被引：29

作者：

Hansen, HD ^{[1
]}

Uggerhoj, UI

Biino, C

Ballestrero, S

Mangiarotti, A

Sona, P

Ketel, TJ

Vilakazi, ZZ

机构：

[1] Univ Aarhus, Dept Phys & Astron, DK-8000 Aarhus C, Denmark

[2] CERN, Geneva, Switzerland

[3] Univ Florence, Florence, Italy

[4] Free Univ Amsterdam, Amsterdam, Netherlands

[5] Univ Cape Town, ZA-7925 Cape Town, South Africa

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.91.014801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Experimental results for the radiative energy loss of 149, 207, and 287 GeV electrons in a thin Ir target are presented. From the data we conclude that at high energies the radiation length increases in accordance with the Landau-Pomeranchuk-Migdal (LPM) theory and thus electrons become more penetrating the higher the energy. The increase of the radiation length as a result of the LPM effect has a significant impact on the behavior of high-energy electromagnetic showers.

引用

页数：4

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