Z lineshape versus fourth-generation masses

被引：12

作者：

Bulanov, SS ^{[1
]}

Novikov, VA ^{[1
]}

Okun, LB ^{[1
]}

Rozanov, AN ^{[1
]}

Vysotsky, MI ^{[1
]}

机构：

[1] Inst Theoret & Expt Phys, Moscow 117259, Russia

来源：

PHYSICS OF ATOMIC NUCLEI | 2003年 / 66卷 / 12期

关键词：

D O I：

10.1134/1.1634324

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The dependence of the Z-resonance shape on the location of the threshold of the N (N) over bar production (N is the fourth-generation neutrino) is analyzed. The bounds on the existence of the fourth generation are derived from the comparison of the theoretical expression for the Z lineshape with the experimental data. The fourth generation is excluded at 95% C.L. for (mN) < 46.7 +/- 0.2 GeV (C) 2003 MAIK "Nauka/Interperiodica".

引用

页码：2169 / 2177

页数：9

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