J/ψ→μ～+μ～- reconstruction in the CMS experiment

被引：1

作者：

杨宗长 ^{[1
]}

钱思进 ^{[1
]}

机构：

[1] State Key Laboratory of Nuclear Science and Technology, Peking University

来源：

中国物理C | 2009年 / 33卷 / 03期

关键词：

CMS; J/ψ; reconstruction efficiency; Level-1; trigger; HLT (High Level Trigger);

D O I：

暂无

中图分类号：

O572.214 [];

学科分类号：

070202 ;

摘要：

In this paper the J/ψ→μ+μ- reconstruction performance in the CMS experiment at the LHC is studied in detail by using Bs → J/ψφ→μμKK events. The reconstruction efficiencies of J/ψ mesons and their decay muons are obtained as a function of the transverse momentum pT and the pseudo-rapidity η. We also study the muon trigger efficiency for this channel with the planned Level-1 trigger and High Level Trigger selection criteria. It was observed that the muon reconstruction efficiency decreases when the two decay muons have a small or large 3D angular separation, which further affects the overall J/ψ reconstruction efficiency.

引用

页码：161 / 169

页数：9

共 13 条

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