Precise determination of Z-Z′ mixing at the CERN LHC

被引：18

作者：

Andreev, V. V. ^{[1
]}

Osland, P. ^{[2
]}

Pankov, A. A. ^{[3
]}

机构：

[1] F Scorina Gomel State Univ, Gomel 246019, BELARUS

[2] Univ Bergen, Dept Phys & Technol, N-5020 Bergen, Norway

[3] Tech Univ Gomel, Abdus Salam ICTP Affiliated Ctr, Gomel 246746, BELARUS

来源：

PHYSICAL REVIEW D | 2014年 / 90卷 / 05期

关键词：

PP COLLISIONS; ANALYTIC EXPRESSIONS; ROOT-S=7 TEV; CONSTRAINTS; E(+)E(-); SEARCH; WW;

D O I：

10.1103/PhysRevD.90.055025

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the expected sensitivity to Z ' boson effects in the W-+/- boson pair production process at the Large Hadron Collider (LHC). The results of a model-dependent analysis of Z ' boson effects are presented as constraints on the Z-Z ' mixing angle phi and Z ' boson mass. The process pp -> W+W- + X allows us to place stringent constraints on the Z-Z ' mixing angle. Specifically, we find that the present LHC bounds on the mixing angle are of the order a few times 10(-3), which is of the same order as those derived from the electroweak data. These results were derived from analysis of W-pair production at root s = 8 TeV and integrated luminosity of 20 fb(-1). Further improvement on the constraining of this mixing can be achieved from the analysis of data on WW -> l nu l 'nu ' (l, l ' = e or mu) and WW -> l nu jj final states collected at the LHC with nominal energy and luminosity, 14 TeV and 100 fb(-1), and should be phi similar to 10(-4)-10(-3).

引用

页数：10

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