arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0709.2134hep-ph
收藏

在直线对撞机上寻找自旋3/2和自旋1/2的激发轻子

Search for excited spin-3/2 and spin-1/2 leptons at linear colliders

O. Cakir, A. Ozansoy

摘要:

我们研究了在未来高能$e^+e^-$碰撞中自旋为3/2和自旋为1/2的激发轻子的单次产生。根据有效电流计算了自旋3/2和自旋1/2轻子激发态的产生截面和衰变宽度。我们发现,这些可能的新的激发态可以探测到质量$m^*$ ~ $\sqrt{s}$取决于他们的轻子和规范玻色子的耦合。我们提出了末态粒子的角分布作为区分激发自旋-3/2和自旋-1/2轻子信号的措施。本文详细地研究了这些信号和相应的背景,以获得在未来的直线对撞机上激发轻子的质量和耦合的可能极限

英文摘要:

We study the single production of excited spin-3/2 and spin-1/2 leptons in future high energy $e^+e^-$ collisions. We calculate the production cross section and decay widths of excited spin-3/2 and spin-1/2 leptons according to their effective currents. We show that these possible new excited states can be probed up to the mass $m^*$ ~ $\sqrt{s}$ depending on their couplings to leptons and gauge bosons. We present the angular distributions of final state particles as a measure to discriminate between an excited spin-3/2 and spin-1/2 lepton signal. The signals and the corresponding backgrounds are studied in detail to obtain attainable limits on masses and couplings of excited leptons at future linear colliders

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。

↑