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arXiv 1002.4718hep-phhep-ex
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用单顶快度测量强子对撞机上的V_td,V_ts,V_tb

Using single top rapidity to measure V_td, V_ts, V_tb at hadron colliders

J. A. Aguilar-Saavedra, A. Onofre

摘要:

单顶产生过程通常被认为是可以在强子对撞机上直接测量V_tb的过程。我们指出,对t-通道和tW产生中的单顶快度分布的分析也可以直接限制Vtd。在14 TeV、10 fb^-1的LHC上,当使用最高快度分布时,V_td的综合极限可能会降低近两倍。这也意味着V_tb的限值也可以降低15%,因为两个参数以及V_ts必须同时从数据的全局拟合中获得。在Tevatron,开发这种分布需要非常高的统计数据。

英文摘要:

Single top production processes are usually regarded as the ones in which V_tb can be directly measured at hadron colliders. We show that the analysis of the single top rapidity distribution in t-channel and tW production can also set direct limits on V_td. At LHC with 10 fb^-1 at 14 TeV the combined limits on V_td may be reduced by almost a factor of two when the top rapidity distribution is used. This also implies that the limits on V_tb can also be reduced by 15%, since both parameters as well as V_ts must be simultaneously obtained from a global fit to data. At Tevatron the explotation of this distribution would require very high statistics.

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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