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arXiv 1506.06949hep-ph
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LHC单顶事件中t通道带电Higgs的产生

The t-channel Charged Higgs Production in Single Top Events at LHC

Majid Hashemi, Seyyed Mohammad Zebarjad, Hossein Bakhshalizadeh

摘要:

本文研究了LHC中t沟道带电Higgs粒子的产生。产生过程是一个带有荷电Higgs交换的t通道单顶事件。因此,就最终状态而言,信号与标准模型单顶生产相似。在第一步中,计算信号截面,并将其与用于LHC重电荷Higgs搜索的其他主要产生过程进行比较,即,pp -> tbH-和pp -> H+ -> tb。在下一步骤中,对信号和背景事件应用事件生成和分析,以便估计信号显著性。信号截面通常比相关的产生(tbH-)和共振产生(tb)小10-3倍,并且在tanbeta = 50时,对于200至500 GeV的带电希格斯质量,信号截面的范围为10 fb至1 fb。由于信号事件的小横截面和大的SM背景,即使在事件的专用运动学分析和选择之后,信号显著性也是小的,然而,在3000 fb-1的积分亮度处可以排除高于120的tanbeta值。

英文摘要:

In this paper, the t-channel charged Higgs production at LHC is studied. Production process is a t-channel single top event with charged Higgs exchange. Therefore the signal is similar with Standard Model single top production in terms of the final state. In the first step, the signal cross section is calculated and compared to the other main production processes which are used for a heavy charged Higgs search at LHC, i.e., pp -> tbH- and pp -> H+ -> tb. In the next step, an event generation and analysis is applied on signal and background events, in order to estimate the signal significance. The signal cross section is typically smaller than the associated production (tbH-) and resonance production (tb) by a factor of 10-3 and ranges from 10 fb to 1 fb for charged Higgs mass from 200 to 500 GeV at tanbeta = 50. Due to the small cross section of signal events and large SM background, the signal significance is small even after a dedicated kinematic analysis and selection of events, however, tanbeta values above 120 can be excluded at an integrated luminosity of 3000 fb-1.

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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