Hard photon next-to-leading corrections to two-fermion production in e(+)e(-) collisions above the Z(0) peak

被引:3
作者
Montagna, G [1 ]
Nicrosini, O [1 ]
Piccinini, F [1 ]
机构
[1] IST NAZL FIS NUCL,SEZ PAVIA,I-27100 PAVIA,ITALY
来源
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1997年 / 76卷 / 01期
关键词
D O I
10.1007/s002880050525
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
A complete next-to-leading order calculation of the initial-state O(alpha) photonic corrections to hadron and lepton-pair production in e(+)e(-) collisions is presented. The impact of the next-to-leading order corrections on the two-fermion cross section and forward-backward asymmetry is studied in detail for several event selections, with special emphasis on hard photon effects at LEP1.5 and LEP2 energies. It is shown that for typical realistic event selections, initial-state next-to-leading order corrections in the soft approximation can be safely extrapolated to energies above the Z(0) peak without significant loss of precision.
引用
收藏
页码:45 / 51
页数:7
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