Search for resonant pair production of Higgs bosons in the bbZZ channel in proton-proton collisions at s=13 TeV
Search for resonant pair production of Higgs bosons in the bbZZ channel in proton-proton collisions at s=13 TeV
复制标题
在 s=13-TeV 质子-质子碰撞中，在 bbZZ 通道中搜索希格斯玻色子的共振对产生
DOI：
10.1103/physrevd.102.032003
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发表时间：
2020
影响因子：
5
通讯作者：
Jeitler, M.
中科院分区：
文献类型：
--
作者：
Sirunyan, A. M.;Tumasyan, A.;Adam, W.;Ambrogi, F.;Bergauer, T.;Dragicevic, M.;Erö, J.;Escalante Del Valle, A.;Frühwirth, R.;Jeitler, M.
提出了一种寻找衰变成一对衰变成通道的希格斯玻色子的窄宽共振的方法。该分析基于CMS探测器在2016年收集的数据，在大型强子对撞机的质子-质子碰撞中，对应的综合光度为。考虑的最终状态是其中一个玻色子衰变成一对介子或电子，而另一个玻色子衰变成一对夸克或一对中微子。在有和没有扩展希格斯扇区的模型中，95%置信水平的上限是关于产生窄宽度自旋为0或自旋为2的粒子衰变为一对希格斯玻色子的上限。在260 ~ 1000 GeV的共振质量范围内，自旋-0和自旋-2共振的生成截面与分支分数的极限分别为0.1 ~ 5.0 pb和0.1 ~ 3.6 pb。这些结果为大量Randall-Sundrum辐射、引力子的Kaluza-Klein激发和次最小双希格斯双重态模型（N2HDMs）的参数空间设置了限制。对于特定的参数选择，N2HDM可以排除在360到620 GeV之间的共振衰减到两个希格斯玻色子。这是首次在通道中寻找希格斯玻色子共振对的产生。
A search for the production of a narrow-width resonance decaying into a pair of Higgs bosons decaying into thechannel is presented. The analysis is based on data collected with the CMS detector during 2016, in proton-proton collisions at the LHC, corresponding to an integrated luminosity of. The final states considered are the ones where one of thebosons decays into a pair of muons or electrons, and the otherboson decays to either a pair of quarks or a pair of neutrinos. Upper limits at 95% confidence level are placed on the production of narrow-width spin-0 or spin-2 particles decaying to a pair of Higgs bosons, in models with and without an extended Higgs sector. For a resonance mass range between 260 and 1000 GeV, limits on the production cross section times branching fraction of a spin-0 and spin-2 resonance range from 0.1 to 5.0 pb and 0.1 to 3.6 pb, respectively. These results set limits in parameter space in bulk Randall-Sundrum radion, Kaluza-Klein excitation of the graviton, and next-to-minimal two-Higgs doublet models (N2HDMs). For specific choices of parameters the N2HDM can be excluded in a mass range between 360 and 620 GeV for a resonance decaying to two Higgs bosons. This is the first search for Higgs boson resonant pair production in thechannel.