文章基本信息

标题：Radiative corrections for Higgs study in ILC
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作者：K. Kato ; F. Boudjema ; J. Fujimoto 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2005
卷号：2005
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：One of the most important goals of the International Linear Collider (ILC) experiments is the detailed study of Higgs particle. With the high-statistics data from devoted efforts by experimentalists, precise theoretical calculations are mandatory. The full electroweak radiative corrections require the large scale computation, so that the use of automated system for the perturbative computation is essential. Most of the radiative corrections for the important channels are already calculated for e􀀀e􀀀 􀀀 ZH[1], νν¯Z[2, 3], e􀀀e􀀀H[4], t ¯tH[5, 6, 7], ZHH[8, 9]. Here, radiative corrections to a final 4-body state, e􀀀e􀀀 􀀀νν¯HH, is presented[10]. This channel is important for the study of Higgs potential in the high energy region. The calculated weak correction in G μ scheme is small, less than 5% for W 􀀀 600GeV. In order to confirm the results, we have made the comparison between ZHH channel and νμν¯μHH channel, and also the estimation of the weak correction by assuming the dominance ofW 􀀀W􀀀 􀀀HH mechanism. As one of the indispensable tools for the high-energy physics, the development of automated systems is another important item. Two new features in the GRACE system, the precision control and the factorization, are introduced. The former works to stabilize the numerical evaluation, and the latter accelerates the computation of matrix elements.