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arXiv 1102.4746hep-ex
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在sqrt(s)= 7 TeV pp碰撞中寻找重类底夸克

Search for a Heavy Bottom-like Quark in pp Collisions at sqrt(s) = 7 TeV

CMS Collaboration

摘要:

利用LHC的CMS实验,在sqrt(s)= 7 TeV的pp碰撞中寻找对产生的类底夸克.在该搜索中考虑衰减b'到tW。b'b'-bar到tW^- t-bar W^+的过程可以通过三轻子和同号双轻子的独特特征来识别。当数据样本对应于34个倒数皮巴的积分亮度时,没有观察到超过标准模型背景预测的多余部分,并且在95%的置信水平上排除了质量在255和361 GeV/c^2之间的b'夸克。

英文摘要:

A search for pair-produced bottom-like quarks in pp collisions at sqrt(s) = 7 TeV is conducted with the CMS experiment at the LHC. The decay b' to tW is considered in this search. The b' b'-bar to tW^- t-bar W^+ process can be identified by the distinctive signature of trileptons and same-sign dileptons. With a data sample corresponding to an integrated luminosity of 34 inverse picobarns, no excess above the standard model background predictions is observed and a b' quark with a mass between 255 and 361 GeV/c^2 is excluded at the 95% confidence level.

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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