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arXiv 1102.3429hep-ph
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LHC电弱规范玻色子对产生中新共振自旋的确定

Determination of the Spin of New Resonances in Electroweak Gauge Boson Pair Production at the LHC

O. J. P. Eboli, Chee Sheng Fong, J. Gonzalez-Fraile, M. C. Gonzalez-Garcia

摘要:

在标准模型的许多扩展中,人们都期望出现与电弱对称破缺(EWSB)相关的自旋1共振。我们分析了CERN大型强子对撞机的势能,通过纯轻子过程pp --> Z^ \prime --> l^+ l^{ \prime -} Emiss_T和pp --> W^ \prime --> l^{ \prime \pm } l^+ l^- Emiss_T来探测可能的新带电和中性矢量共振的自旋,其中l,l^ \prime = e或μ。我们进行了一个模型独立的分析,并证明了新的状态的自旋可以确定与99% CL在一个大的部分的参数空间,这些共振可以观察到100 fb^{-1}。我们表明,最好的灵敏度的自旋是通过直接研究末态轻子之间的相关性,而不需要重建的事件在他们的质心框架。

英文摘要:

The appearance of spin-1 resonances associated to the electroweak symmetry breaking (EWSB) sector is expected in many extensions of the Standard Model. We analyze the CERN Large Hadron Collider potential to probe the spin of possible new charged and neutral vector resonances through the purely leptonic processes pp --> Z^\prime --> l^+ l^{\prime -} Emiss_T, and pp --> W^\prime --> l^{\prime \pm} l^+ l^- Emiss_T, with l, l^\prime = e or μ. We perform a model independent analysis and demonstrate that the spin of the new states can be determined with 99% CL in a large fraction of the parameter space where these resonances can be observed with 100 fb^{-1}. We show that the best sensitivity to the spin is obtained by directly studying correlations between the final state leptons, without the need of reconstructing the events in their center-of-mass frames.

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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