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arXiv 0910.3564hep-ex
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在双光子通道中寻找额外维

Search for Extra Dimensions in the Diphoton Channel

Selda Esen, CMS Collaboration

摘要:

我们提出了一个搜索额外的维度在双光子通道使用CMS探测器在大型强子对撞机。搜索的重点是即将到来的2009- 2010年运行在10 TeV中心$-$的$-$质量能量和$\sim 100$ PB $^{-1}$的数据。我们讨论事件选择和优化,以及估计各种背景和效率的数据驱动方法。在所有选择要求之后,背景的主要来源是SM双光子产生。我们引用搜索的灵敏度在没有多余的观察的情况下,在大的和扭曲的额外维度的参数的限制,并在信号发现的意义方面,如果在数据中看到一个多余的。

英文摘要:

We present a search for extra dimensions in the diphoton channel using the CMS detector at the Large Hadron Collider. The search is focused on the forthcoming 2009--2010 run at 10 TeV center$-$of$-$mass energy and $\sim 100$ pb$^{-1}$ of data. We discuss event selection and optimization, as well as data-driven methods of estimating various backgrounds and efficiencies. The dominant source of background after all the selection requirements is SM diphoton production. We quote the sensitivity of the search both in terms of limits on the parameters of large and warped extra dimensions in the case of no excess observed, and in terms of signal discovery significance, if an excess is seen in data.

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