Observation of Higgs Boson Decay to Bottom Quarks
Observation of Higgs Boson Decay to Bottom Quarks
复制标题
希格斯玻色子衰变为底夸克的观测
DOI：
10.1103/physrevlett.121.121801
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发表时间：
2018
影响因子：
8.6
通讯作者：
CMS Collaboration
中科院分区：
文献类型：
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作者：
CMS Collaboration
给出了标准模型希格斯玻色子衰变为一对底夸克的观测结果。对这一结果的主要贡献来自于希格斯玻色子与玻色子（）结合产生的过程，并在最终状态中搜索，包括0，1或2个带电轻子和两个确定的底夸克喷流。描述了2017年CMS实验记录的数据样本中这些过程的测量结果，质子-质子碰撞的测量。当与以前的测量使用收集的数据在，8，和13 TeV相结合，观察到的事件与4.8标准差的意义，其中SM希格斯玻色子的期望值为4.9。相应的测量信号强度为。将该结果与CMS实验对其他生产工艺的搜索相结合，得到5.6（5.5）标准差的观察（预期）显著性和
The observation of the standard model (SM) Higgs boson decay to a pair of bottom quarks is presented. The main contribution to this result is from processes in which Higgs bosons are produced in association with aorboson (), and are searched for in final states including 0, 1, or 2 charged leptons and two identified bottom quark jets. The results from the measurement of these processes in a data sample recorded by the CMS experiment in 2017, comprisingof proton-proton collisions at, are described. When combined with previousmeasurements using data collected at, 8, and 13 TeV, an excess of events is observed atwith a significance of 4.8 standard deviations, where the expectation for the SM Higgs boson is 4.9. The corresponding measured signal strength is. The combination of this result with searches by the CMS experiment forin other production processes yields an observed (expected) significance of 5.6 (5.5) standard deviations and a signal strength of.