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arXiv 0901.4087hep-ph
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一个普适的Pythia额外维度

One Universal Extra Dimension in Pythia

M. ElKacimi, D. Goujdami, H. Przysiezniak, P. Skands

摘要:

普适额外维度模型从6.4.18版本开始在Pythia生成器中实现,其最小公式中有一个逆TeV大小的额外维度。引力介导的衰变的另一种可能性也是存在的,即通过数量可变的、只有引力延伸到的、大小与电子伏特相反的额外维度。该实现涵盖了标准模型粒子的最低层Kaluza-Klein(KK)激发,除了Higgs场的激发,在一个循环中计算质谱。包括2 -> 2树级产生截面和KK数守恒的2体衰变。混合之间的等双重和单KK激发被忽略,迄今为止,预计将是微不足道的,但所有的顶部部门。

英文摘要:

The Universal Extra Dimensions model has been implemented in the Pythia generator from version 6.4.18 onwards, in its minimal formulation with one inverse-TeV-sized extra dimension. The additional possibility of gravity-mediated decays, through a variable number of inverse-eV-sized extra dimensions into which only gravity extends, is also available. The implementation covers the lowest-lying Kaluza-Klein (KK) excitations of Standard Model particles, except for the excitations of the Higgs fields, with the mass spectrum calculated at one loop. 2 -> 2 tree-level production cross sections and KK number conserving 2-body decays are included. Mixing between iso-doublet and -singlet KK excitations is neglected thus far, and is expected to be negligible for all but the top sector.

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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