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arXiv 1502.04994hep-ex
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在sqrt(s)= 8的质子-质子碰撞中寻找衰减到Z和希格斯玻色子的窄高质量共振TeV

Search for narrow high-mass resonances in proton-proton collisions at sqrt(s) = 8 TeV decaying to a Z and a Higgs boson

CMS Collaboration

摘要:

第一次寻找一个狭窄的,高质量的共振衰减到Z和希格斯(H)玻色子。研究的最终状态由合并的喷流对和τ对分别从Z和H玻色子的衰变产生。该分析基于2012年CMS实验收集的质心能量为8 TeV的质子-质子碰撞的数据样本,对应于19.7毫微微电子能的积分亮度。在0.8到2.5 TeV的共振质量范围内,Z和H玻色子产生的动量很大,这意味着两个夸克或两个τ轻子的最终产物必须在一个小的角间隔内被检测到。从所有可能的衰变模式的τ轻子的组合,生产截面在0.9和27.8 fb之间的范围内被排除在95%的置信水平,取决于共振质量。

英文摘要:

The first search for a narrow, high-mass resonance decaying into Z and Higgs (H) bosons is presented. The final state studied consists of a merged jet pair and a tau pair resulting from the decays of Z and H bosons, respectively. The analysis is based on a data sample of proton-proton collisions at a center-of-mass energy of 8 TeV, collected with the CMS experiment in 2012, and corresponding to an integrated luminosity of 19.7 inverse femtobarns. In the resonance mass range of interest, which extends from 0.8 to 2.5 TeV, the Z and H bosons are produced with large momenta, which implies that the final products of the two quarks or the two tau leptons must be detected within a small angular interval. From a combination of all possible decay modes of the tau leptons, production cross sections in a range between 0.9 and 27.8 fb are excluded at 95% confidence level, depending on the resonance mass.

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