Division of High Energy Physics, Department of Physics, University of Helsinki, Finland.
Phys Rev Lett. 2012 Aug 17;109(7):071804. doi: 10.1103/PhysRevLett.109.071804. Epub 2012 Aug 14.
We combine searches by the CDF and D0 Collaborations for the associated production of a Higgs boson with a W or Z boson and subsequent decay of the Higgs boson to a bottom-antibottom quark pair. The data, originating from Fermilab Tevatron pp collisions at √s = 1.96 TeV, correspond to integrated luminosities of up to 9.7 fb(-1). The searches are conducted for a Higgs boson with mass in the range 100-150 GeV/c(2). We observe an excess of events in the data compared with the background predictions, which is most significant in the mass range between 120 and 135 GeV/c(2). The largest local significance is 3.3 standard deviations, corresponding to a global significance of 3.1 standard deviations. We interpret this as evidence for the presence of a new particle consistent with the standard model Higgs boson, which is produced in association with a weak vector boson and decays to a bottom-antibottom quark pair.
我们结合 CDF 和 D0 合作实验的搜索结果，研究了希格斯玻色子与 W 或 Z 玻色子相关产生，随后希格斯玻色子衰变为底夸克反底夸克对的过程。这些数据来源于费米实验室 Tevatron 对质心能量为 1.96 TeV 的 pp 碰撞，其积分亮度高达 9.7 fb(-1)。我们对质量在 100-150 GeV/c(2) 范围内的希格斯玻色子进行了搜索。与背景预测相比，我们在数据中观察到了事件的过剩，在质量范围在 120-135 GeV/c(2) 之间最为显著。最大的局部显著性为 3.3 个标准偏差，对应于 3.1 个标准偏差的全局显著性。我们将其解释为存在与标准模型希格斯玻色子一致的新粒子的证据，该粒子与弱矢量玻色子相关产生，并衰变为底夸克反底夸克对。
