Full O(α) electroweak radiative corrections to e+e- → t(t)over-barγ with GRACE-Loop

被引：0

作者：

Khiem, P. H. ^{[1
,2
]}

Fujimoto, J. ^{[1
]}

Ishikawa, T. ^{[1
]}

Kaneko, T. ^{[1
]}

Kato, K. ^{[3
]}

Kurihara, Y. ^{[1
]}

Shimizu, Y. ^{[1
]}

Ueda, T. ^{[4
]}

Vermaseren, J. A. M. ^{[5
]}

Yasui, Y. ^{[6
]}

机构：

[1] KEK, Tsukuba, Ibaraki 3050801, Japan

[2] SOKENDAI Univ, Hayama, Kanagawa 2400193, Japan

[3] Kogakuin Univ, Shinjuku Ku, Tokyo 1638677, Japan

[4] Karlsruhe Inst Technol KIT, D-76128 Karlsruhe, Germany

[5] NIKHEF H, NL-1098 XG Amsterdam, Netherlands

[6] Tokyo Management Coll, Ichikawa, Chiba 2720001, Japan

来源：

EUROPEAN PHYSICAL JOURNAL C | 2013年 / 73卷 / 04期

关键词：

HIGGS-BOSON PRODUCTION;

D O I：

10.1140/epjc/s10052-013-2400-3

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We present the full O(alpha) electroweak radiative corrections to the process e(+) e(-) -> 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(-) -> 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.

引用

页码：1 / 7

页数：7

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