LHC对撞机上pp(γγ→tt)pp过程的电弱修正

The electroweak corrections to the process pp(γγ→tt)pp at the LHC

在等效光子近似下计算了LHC对撞机上pp(γγ→tt)pp过程的电弱修正.结果表明:pp(γγ→tt)pp过程修正后的截面相对较小,但电弱修正效应却高达到-7%左右.所以,对于LHC对撞机上背景非常干净的pp(γγ→tt)pp过程而言,电弱修正效应是不能忽略的.

In this paper the electroweak corrections to the process pp（γγ→tt）pp at the LHC are calculated in the equivalent photon approximation.Our results shows that the corrected cross sections for the process pp（γγ→tt）pp at the LHC are small relatively to its subprocess（γγ→tt）,but the electroweak correction effect is large up to-7%.Therefore,for the process pp（γγ→tt）pp which has very clean environment,its electroweak corrections have to be included.