QCD corrections to static heavy-quark form factors

被引：35
|
作者：
Bernreuther, W [1 ]
Bonciani, R
Gehrmann, T
Heinesch, R
Leineweber, T
Mastrolia, P
Remiddi, E
机构：
[1] Rhein Westfal TH Aachen, Inst Theoret Phys, D-52056 Aachen, Germany
[2] Univ Valencia, CSIC, IFIC, Dept Fis Teor, E-46071 Valencia, Spain
[3] Univ Zurich, Inst Theoret Phys, CH-8057 Zurich, Switzerland
[4] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
[5] Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy
[6] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy
来源：
PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 26期
关键词：
D O I：
10.1103/PhysRevLett.95.261802
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Interactions of heavy quarks, in particular, of top quarks, with electroweak gauge bosons are expected to be very sensitive to new physics effects related to electroweak symmetry breaking. These interactions are described by the so-called static form factors, which include anomalous magnetic moments and the effective weak charges. We compute the second-order QCD corrections to these static form factors, which turn out to be sizable and need to be taken into account in searches for new anomalous coupling effects.
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页码：1 / 4
页数：4
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