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R-parity violating resonant stop production at the Large Hadron Collider

机译:大型强子对撞机的R平价违反了共振光阑的产生

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We have investigated the resonant production of a stop at the Large Hadron Collider, driven by baryon number violating interactions in supersymmetry. We work in the framework of minimal supergravity models with the lightest neutralino being the lightest supersymmetric particle which decays within the detector. We look at various dilepton and trilepton final states, with or without b-tags. A detailed background simulation is performed, and all possible decay modes of the lighter stop are taken into account. We find that higher stop masses are sometimes easier to probe, through the decay of the stop into the third or fourth neutralino and their subsequent cascades. We also comment on the detectability of such signals during the 7TeV run, where, as expected, only relatively light stops can be probed. Our conclusion is that the resonant process may be probed, at both 10 and 14TeV, with the R-parity violating coupling λ″312 as low as 0.05, for a stop mass of about 1TeV. The possibility of distinguishing between resonant stop production and pair-production is also discussed.
机译:我们已经研究了由超对称中重子数违反相互作用所驱动的大型强子对撞机的光阑共振产生。我们在最小超重力模型的框架中工作,最轻的中性粒子是在探测器内衰减的最轻的超对称粒子。我们看一下带有或不带有b标签的各种dilepton和trilepton最终状态。进行了详细的背景模拟,并考虑了打火机挡块的所有可能的衰减模式。我们发现,通过将光阑衰减到第三或第四条中性线及其随后的级联,有时更容易探测到较高的光阑质量。我们还评论了在7TeV运行期间此类信号的可检测性,正如预期的那样,只能探测相对较轻的光阑。我们的结论是,对于大约1TeV的终止质量,可以在10TeV和14TeV处探测共振过程,其中R奇偶违规耦合λ'' 312 低至0.05。还讨论了区分共振停止产生和成对产生的可能性。

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