Search for the standard model Higgs boson in the decay channel H?ZZ?4l in pp collisions at vs=7 TeV.
Search for the standard model Higgs boson in the decay channel H?ZZ?4l in pp collisions at vs=7 TeV.
复制标题
在 vs=7 TeV 的 pp 碰撞中，在衰变通道 H?ZZ?4l 中搜索标准模型希格斯玻色子。
DOI：
10.1103/physrevlett.108.111804
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发表时间：
2012
影响因子：
8.6
通讯作者：
Chatrchyan S
中科院分区：
文献类型：
--
作者：
Chatrchyan S
A search for a Higgs boson in the four-lepton decay channel, with eachboson decaying to an electron or muon pair, is reported. The search covers Higgs boson mass hypotheses in the range of. The analysis uses data corresponding to an integrated luminosity ofrecorded by the CMS detector incollisions atfrom the LHC. Seventy-two events are observed with four-lepton invariant mass(with 13 below 160 GeV), while() events are expected from background. The four-lepton mass distribution is consistent with the expectation of standard model background production ofpairs. Upper limits at 95% confidence level exclude the standard model Higgs boson in the ranges of 134–158 GeV, 180–305 GeV, and 340–465 GeV. Small excesses of events are observed around masses of 119, 126, and 320 GeV, making the observed limits weaker than expected in the absence of a signal.
