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arXiv 1401.1127hep-phhep-ex
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在CERN LHC上寻找Elko暗物质旋量

Searching for Elko dark matter spinors at the CERN LHC

Alexandre Alves, Fernando de Campos, Marco Dias, Julio M. Hoff da Silva

摘要:

本工作的目的是探索在大型强子对撞机(LHC)中发现质量维为1的费米子场--Elko场的可能性。由于其质量维度,Elko只能与标准模型(SM)旋量和规范场在1圈级或树级通过与希格斯场的四次相互作用相互作用。在希格斯玻色子入口的情况下,埃尔克是一个可行的候选人,暗物质的组成部分,已被证明是兼容的遗迹丰度测量从WMAP和直接暗物质-核子搜索。我们提出了一个搜索策略,这个暗物质候选人在通道$pp \rightarrow l^+ l^- + \not\!\! E_T$在$\sqrt{s}=14$ TeV LHC。考虑到三重Higgs-Elko耦合在积分亮度为1 pb $^{-1}$后小到$\sim 0.5$,我们显示了LHC发现Elko的潜力。本文还讨论了这种新粒子及其对撞机特征的一些唯象结果。

英文摘要:

The aim of this work is to explore the possibility to discover a fermionic field with mass dimension one, the Elko field, in the Large Hadron Collider (LHC). Due to its mass dimension, an Elko can only interact either with Standard Model (SM) spinors and gauge fields at 1-loop order or at tree level through a quartic interaction with the Higgs field. In this Higgs portal scenario, the Elko is a viable candidate to a dark matter constituent which has been shown to be compatible with relic abundance measurements from WMAP and direct dark matter--nucleon searches. We propose a search strategy for this dark matter candidate in the channel $pp \rightarrow l^+ l^- + \not\!\! E_T$ at the $\sqrt{s}=14$ TeV LHC. We show the LHC potential to discover the Elko considering a triple Higgs-Elko coupling as small as $\sim 0.5$ after 1 pb$^{-1}$ of integrated luminosity. Some phenomenological consequences of this new particle and its collider signatures are also discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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