2013年4月

# Full O(alpha) electroweak radiative corrections to e(+)e(-) -&gt; t(t)over-bar gamma with GRACE-Loop

EUROPEAN PHYSICAL JOURNAL C
• P. H. Khiem
• ,
• J. Fujimoto
• ,
• T. Ishikawa
• ,
• T. Kaneko
• ,
• K. Kato
• ,
• Y. Kurihara
• ,
• Y. Shimizu
• ,
• T. Ueda
• ,
• J. A. M. Vermaseren
• ,
• Y. Yasui

73
4

DOI
10.1140/epjc/s10052-013-2400-3

SPRINGER

We present the full O(alpha) electroweak radiative corrections to the process e(+) e(-) -&gt; t (t) over bar gamma at the International Linear Collider (ILC). The computation is performed with the help of the GRACE-Loop system. We present the total cross-section and the top quark forward-backward asymmetry (AFB) as a function of the center-of-mass energy and compare them with the process e(+) e(-) -&gt; t (t) over bar. We find that the value of AFB in t (t) over bar gamma production is larger than AFB in t (t) over bar production. It is an important result for the measurement of the top quark forward-backward asymmetry at the ILC. Applying a structure function method, we also subtract the QED correction to gain the genuine weak correction in both the a scheme and the G(mu) scheme (delta(G mu)(W)). We obtain numerical values for delta(G mu)(W) which are changing from 2 % to -24 % when we vary the center-of-mass energy from 360 GeV to 1 TeV.

Web of Science ® 被引用回数 : 11

リンク情報
DOI
https://doi.org/10.1140/epjc/s10052-013-2400-3
Web of Science