摘要
The charged top-pions have been predicted by the topcolour-assisted technicolour （TC2） model and the observation of the charged top-pions can be regarded as the robust evidence of the model. We study the charged top-pion and gluon associated production at the LHC, i.e., pp → gIIe^＋. The cross section of this process can reach tens of pb, even hundreds ofpb, and there will be enough gIIt^＋ events produced at the LHC. Because the gIIt^＋ production is a flavour-changing （FC） process, the SM background can be greatly depressed. Furthermore, there exists an FC decay mode cb for the charged top-pions, and such decay mode can provide us with the typical signals to detect the charged top-pions. Therefore, it is hopeful to find the charged top-pions via the gIIe^＋ production at the LHC.
The charged top-pions have been predicted by the topcolour-assisted technicolour （TC2） model and the observation of the charged top-pions can be regarded as the robust evidence of the model. We study the charged top-pion and gluon associated production at the LHC, i.e., pp → gIIe^＋. The cross section of this process can reach tens of pb, even hundreds ofpb, and there will be enough gIIt^＋ events produced at the LHC. Because the gIIt^＋ production is a flavour-changing （FC） process, the SM background can be greatly depressed. Furthermore, there exists an FC decay mode cb for the charged top-pions, and such decay mode can provide us with the typical signals to detect the charged top-pions. Therefore, it is hopeful to find the charged top-pions via the gIIe^＋ production at the LHC.
基金
Supported by the National Natural Science Foundation of China under Grant Nos 10775039, 10575029 and 10575052.
