Heavy-flavor contribution to Bhabha scattering

被引：33

作者：

Bonciani, R. ^{[1
]}

Ferroglia, A. ^{[2
]}

Penin, A. A. ^{[3
,4
]}

机构：

[1] Univ Valencia, CSIC, IFIC, Dept Fis Teor, E-46071 Valencia, Spain

[2] Univ Zurich, Inst Theoret Phys, CH-8057 Zurich, Switzerland

[3] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada

[4] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.100.131601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We evaluate the last missing piece of the two-loop QED corrections to the high-energy electron-positron scattering cross section originating from the vacuum polarization by heavy fermions. The calculation is performed within a new approach applicable to a wide class of perturbative problems with mass hierarchy. The result is crucial for the high-precision physics program at existing and future e(+)e(-) colliders.

引用

页数：4

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