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arXiv 1002.2339hep-ph
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大型强子对撞机上R宇称破坏共振终止的产生

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

Nishita Desai, Biswarup Mukhopadhyaya

摘要:

我们研究了在大型强子对撞机上由超对称中的重子数破坏相互作用驱动的停止的共振产生。我们在最小超引力模型的框架下工作,最轻的中性伴子是在探测器内衰变的最轻的超对称粒子。我们研究各种双轻子和三轻子的末态,有或没有b标记。进行了详细的背景模拟,并考虑到所有可能的衰减模式的打火机停止。我们发现,更高的停止质量有时更容易探测,通过停止到第三或第四中性伴子及其随后的级联衰变。我们还评论在7 TeV的运行,在那里,正如预期的那样,只有相对较轻的停止可以探测这些信号的可探测性。我们的结论是,在10和14 TeV的能量下,当R宇称违反耦合λ"_{312}低至0.05,停止质量约为1 TeV时,都可以探测到共振过程。讨论了区分共振停止产生和成对产生的可能性。

英文摘要:

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 7 TeV 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 14 TeV, with the R-parity violating coupling λ"_{312} as low as 0.05, for a stop mass of about 1 TeV. The possibility of distinguishing between resonant stop production and pair-production is also discussed.

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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