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arXiv 1208.2884hep-ex
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用TeV探测器在sqrt(s)= 7的pp碰撞中寻找有两个轻子和缺少横动量的末态直接产生slepton和gaugino

Search for direct slepton and gaugino production in final states with two leptons and missing transverse momentum with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV

ATLAS Collaboration

摘要:

利用ATLAS实验在7 TeV能量下记录的4.7fb-1质子-质子碰撞数据,研究了带电slepton和弱gauginos衰变到两个轻子的末态时的电弱对产生.未观察到相对于标准模型过程的预测的显著过量。在直接产生slepton的情况下,如果slepton直接衰变为最轻的中性伴子,则对于20 GeV的中性伴子,在95%的置信水平下排除85至195 GeV之间的左手slepton质量。在直接产生类似维诺的电荷对的情况下,110和340 GeV之间的电荷质量被排除在最轻的中性伴子通过中间壳层带电slepton衰变为10 GeV的中性伴子。结果也被解释在唯象最小超对称标准模型的框架。

英文摘要:

A search for the electroweak pair production of charged sleptons and weak gauginos decaying into final states with two leptons is performed using 4.7 fb-1 of proton-proton collision data at sqrt(s)=7 TeV recorded with the ATLAS experiment at the Large Hadron Collider. No significant excesses are observed with respect to the prediction from Standard Model processes. In the scenario of direct slepton production, if the sleptons decay directly into the lightest neutralino, left-handed slepton masses between 85 and 195 GeV are excluded at 95% confidence level for a 20 GeV neutralino. Chargino masses between 110 and 340 GeV are excluded in the scenario of direct production of wino-like chargino pairs decaying into the lightest neutralino via an intermediate on-shell charged slepton for a 10 GeV neutralino. The results are also interpreted in the framework of the phenomenological minimal supersymmetric Standard Model.

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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