Search for the Standard Model Higgs boson in the decay channel H → ZZ (*) → 4l at CMS

被引：0
|
作者：
Singh, Chahal Gurpreet [1 ,2 ]
机构：
[1] Univ Bari, I-70121 Bari, Italy
[2] Ist Nazl Fis Nucl, Sez INFN Bari, I-70125 Bari, Italy
来源：
PRAMANA-JOURNAL OF PHYSICS | 2012年 / 79卷 / 05期
基金：
英国科学技术设施理事会;
关键词：
CMS; Standard Model Higgs Boson;
D O I：
10.1007/s12043-012-0446-7
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A search for the Standard Model (SM) Higgs boson in the decay channel H -> ZZ (( auaEuro parts per thousand)) -> 4l with each Z boson decaying to an electron or muon pair is presented using pp collisions from the LHC at TeV. The data analysed correspond to an integrated luminosity of 1.66 +/- 0.07 fb (-aEuro parts per thousand 1) recorded by the CMS detector in 2010 and 2011. The search covers Higgs boson mass (m (H)) hypotheses of . Twenty-one events are observed, while 21.2 +/- 0.8 events are expected from Standard Model (SM) background processes. The events are not clustered in mass excluding interpretation as the SM Higgs boson and its (4l) mass distribution is consistent with the expectation of SM continuum production of ZZ (( auaEuro parts per thousand)) pairs. Upper limits at 95% CL on the cross-section x branching ratio for a SM Higgs boson with SM like decays exclude cross-sections from about once to twice the expected SM cross-section for masses in the range of 150 < m(H) < 420 GeV/c(2).
引用
收藏
页码：1321 / 1324
页数：4
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