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arXiv 0806.1057hep-phhep-ex
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强子对撞机长寿命Slepton方案中电荷中性伴子产生的研究

Study of chargino-neutralino production at hadron colliders in a long-lived slepton scenario

Ryuichiro Kitano

摘要:

计算了电荷中性伴子产生的微分截面,q qbar --> chi+-chi 0,然后衰变为标量τ轻子的微分截面,chi+-chi 0-->(stau+- nu)(stau-+ tau+-)-->(stau+- nu)(stau-+ l+- nu nubar).在stau是长寿命的情况下,这个最终状态可以在强子对撞机实验中完全重建,直到离散的双重模糊。因此,各种运动学变量的分布可以观察到,并告诉我们超粒子的质量和自旋,以及宇称/ CP破坏的相互作用,通过比较截面公式。观察本文导出的非平凡分布将是对超对称性的一个很好的检验。

英文摘要:

The differential cross section of the chargino-neutralino production, q qbar --> chi+- chi0, followed by their decays into scalar tau leptons, chi+- chi0 --> (stau+- nu)(stau-+ tau+-) --> (stau+- nu)(stau-+ l+- nu nubar), is calculated including the effect of spin correlations. In the case where stau is long-lived, this final state can be fully reconstructed in a hadron-collider experiment up to a discrete two-fold ambiguity. Distributions of various kinematic variables can thus be observable and tell us about masses and spins of superparticles and also parity/CP violation in interactions by comparing with the cross-section formula. Observing non-trivial distributions derived in this paper will be a good test of supersymmetry.

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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