Searches for electroweak neutralino and chargino production in channels with Higgs, Z, and W bosons in pp collisions at 8 TeV Searches for Electroweak Neutralino
Searches for electroweak neutralino and chargino production in channels with Higgs, Z, and W bosons in pp collisions at 8 TeV Searches for Electroweak Neutralino
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DOI：
10.1103/physrevd.90.092007
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发表时间：
2014-11
影响因子：
5
通讯作者：
V. Khachatryan;C. Caillol;B. Clerbaux;G. Lentdecker;D. Dobur;L. Favart;A. Grebenyuk;A. Léonard;A. Mohammadi;L. Perniè;T. Reis;T. Ševa;L. Thomas;C. Velde;P. Vanlaer;Jian Wang;F. Zenoni
中科院分区：
文献类型：
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作者：
V. Khachatryan;C. Caillol;B. Clerbaux;G. Lentdecker;D. Dobur;L. Favart;A. Grebenyuk;A. Léonard;A. Mohammadi;L. Perniè;T. Reis;T. Ševa;L. Thomas;C. Velde;P. Vanlaer;Jian Wang;F. Zenoni
寻找超对称（SUSY）是基于电弱对产生的中性子和带电子，导致与希格斯，Z和W玻色子和未探测到的最轻的SUSY粒子（LSPs）的衰变通道。数据样本对应于2012年LHC的CMS探测器在8 TeV质心能量下收集的质子-质子碰撞的综合光度约为19.5 lb -1。主要重点是中性微子对的产生，其中每个中性微子要么衰变成希格斯玻色子(h)和LSP，要么衰变成Z玻色子和LSP，导致hh、hZ和ZZ态失去横向能量（ETmiss）。第二个方面是电荷-中性子对的产生，导致具有ETmiss的hW态。希格斯玻色子到底夸克对、光子对和轻子最终态的衰变与Z和W玻色子的强子和轻子衰变模式一起被考虑。没有发现超对称粒子存在的证据，并对各自的对产生截面以及中和子和带电子质量值进行了95%置信水平上限的评估。
Searches for supersymmetry (SUSY) are presented based on the electroweak pair production of neutralinos and charginos, leading to decay channels with Higgs, Z, and W bosons and undetected lightest SUSY particles (LSPs). The data sample corresponds to an integrated luminosity of about 19.5fb-1 of proton-proton collisions at a center-of-mass energy of 8 TeV collected in 2012 with the CMS detector at the LHC. The main emphasis is neutralino pair production in which each neutralino decays either to a Higgs boson (h) and an LSP or to a Z boson and an LSP, leading to hh, hZ, and ZZ states with missing transverse energy (ETmiss). A second aspect is chargino-neutralino pair production, leading to hW states with ETmiss. The decays of a Higgs boson to a bottom-quark pair, to a photon pair, and to final states with leptons are considered in conjunction with hadronic and leptonic decay modes of the Z and W bosons. No evidence is found for supersymmetric particles, and 95% confidence level upper limits are evaluated for the respective pair production cross sections and for neutralino and chargino mass values.