Searching for Flavor-Changing Neutral-Current Signals via e+e-(γγ) →tcht0 in Topcolor-Assisted Technicolor Model

• 来源期刊: 理论物理通讯(英文版)
• 学科: 物理学
• 关键词: TC2模型 电流信号 电子邮件 中性 国际直线对撞机 风味 搜索 不变质量分布
• 年，卷（期）: 2010,（12）
• 页码范围: 1091-1096
• 页数: 6页
• 分类号: O572.33 TM32
• 语种: 英文

摘要

In the context of the top-color-assisted technicolor (TC2) model, the flavor-changing neutral-current (FCNC) interaction induced by the top-higgs (hOt) are predicted at tree level. We study the relevant processes of e+e-(γγ)→tcht0 at the International Linear Collider (ILC). It is found that these rare processes production rates can be enhanced significantly in the TC2 model. Especially for the process γγ→tcht0, the total cross section will reach a few fb in the reasonable parameter space. We also calculate the distributions of transverse momenta, pseudo-rapid and invariant mass of the top-higgs. In view of the main decay modes of top-higgs for mho 〈 2mr, we find that there will be several hundreds FCNC events produced at the ILC with annually integral luminosity of 500 fb-1. Due to the clean background, such FCNC signals can possibly be detected at the ILC.