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arXiv 0802.0236hep-ph
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光子对撞机上顶夸克对产生的非粒子效应

Unparticle Effects on Top Quark Pair Production at Photon Collider

Hai-Feng Li, Hong-lei Li, Zong-Guo Si, Zhong-Juan Yang

摘要:

研究了在未来光子对撞机上产生$t\bar t$的非粒子效应。预言了顶夸克的$t\bar t$不变质量和横动量相对于标准模型和非粒子产生的分布。在某些$d_{\U}$值下,出现了非粒子贡献的奇谷,这是由于SM和非粒子贡献之间存在较大的抵消作用。这个性质可以用来研究标量非粒子的性质。我们的研究还表明,如果存在标量非粒子,它可能在光子对撞机产生$t \bar t$中起重要作用。

英文摘要:

The unparticle effects on $t\bar t$ production at the future photon collider are investigated. Distributions of $t\bar t$ invariant mass and that for transverse momentum of top quark with respect to Standard Model and unparticle production are predicted. An odd valley with scalar unparticle contribution appears for some values of $d_{\U}$, which is due to the big cancellation between the contribution from SM and that from unparticle. This character may be used to study the properties of scalar unparticle. Our investigations also show that scalar unparticle may play a significant role in $t \bar t$ production at photon collider if it exists.

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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