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arXiv 1209.6401hep-phhep-ex
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在LHC和ILC的大额外维度模型中生产$WWZ/γ$

$WWZ/γ$ production in large extra dimensions model at LHC and ILC

Li Xiao-Zhou, Duan Peng-Fei, Ma Wen-Gan, Zhang Ren-You, Guo Lei

摘要:

本文在欧洲核子研究中心(CERN)大型强子对撞机(LHC)和国际直线对撞机(ILC)的大额外维(LED)模型框架下,研究了Kaluza-Klein(KK)引力子对$W^+W^-γ/Z$产生的影响.给出了LED模型中的积分截面和各种运动学分布,并与标准模型中的积分截面和各种运动学分布进行了比较。结果表明,KK-引力子交换的贡献对ILC和LHC中三重规范玻色子($W^+W^-γ/Z$)产生过程的观测值都有显著影响,特别是在高横动量区和中心快度区.我们还发现,由于$pp$碰撞中连续的大碰撞能量引起的KK-引力子交换共振效应和$gg$聚变子过程的额外LED贡献,LHC产生的$W^+W^-γ/Z$的相对LED差异一般大于ILC产生的相对LED差异.我们的结论是,在LHC的$W^{+}W^{-}γ$和$W^{+}W^{-}Z$生产可以有明显的优势,在有效地探索LED信号测量$W^+W^-γ/Z$生产方面在ILC。

英文摘要:

We investigate the effect induced by the Kaluza-Klein (KK) graviton in the $W^+W^-γ/Z$ production in the framework of the large extra dimensions (LED) model at both the CERN Large Hadron Collider (LHC) and the International Linear Collider (ILC). The integrated cross sections and various kinematic distributions in the LED model are presented and compared with those in the standard model. The results show that the contributions from KK-graviton exchange remarkably affect the observables of the triple gauge boson ($W^+W^-γ/Z$) production processes at both the ILC and the LHC, particularly either in the high transverse momentum region or in the central rapidity region. We also find that the relative LED discrepancy for the $W^+W^-γ/Z$ production at the LHC is generally larger than that at the ILC due to the additional LED contribution via $gg$ fusion subprocess and the KK-graviton exchanging resonant effect induced by the continuous large colliding energy in $pp$ collision. We conclude that the $W^{+}W^{-}γ$ and $W^{+}W^{-}Z$ productions at the LHC could have the distinct advantage over at the ILC from the aspect of effectively exploring the LED signal in measuring $W^+W^-γ/Z$ production.

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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