The topcolour-assisted technicolour （TC2） model is an interesting dynamical theory among the various new physics models. We cMculate the total tt cross section and the relative correction of the TC2 model to the cro...The topcolour-assisted technicolour （TC2） model is an interesting dynamical theory among the various new physics models. We cMculate the total tt cross section and the relative correction of the TC2 model to the cross section at Tevatron Run Ⅱ and LHC. At the Tevatron Run Ⅱ, the cross section predicted by the standard model （SM） is consistent with the experimental data, and in most parameter spaces of the TC2 model, the relative correction of the TC2 model to the cross section is too small to be detectable. We find that the tt cross section is more sensitive to the parameters of the TC2 model at the LHC and the relative correction of the TC2 model to the cross section is over 10% in general. Such a value of the relative correction should be large enough to be detectable at the LHC. Therefore, it is promising to find the clue of the TC2 model via the tt production at the LHC.展开更多
In addition to deployment of the commercial management products,a number of public and self developed tools are successfully used at Fermilab for monitoring of the campus network.A suite of tools consisting of several...In addition to deployment of the commercial management products,a number of public and self developed tools are successfully used at Fermilab for monitoring of the campus network.A suite of tools consisting of several programs running in a distributed environment to measure network parameters such as average round-trip time.traffic,throughput,error rate,DNS responses and others from different locations in the network is used.The system maintains a central archive of data,makes analysis and graphical representation available via a web-based interface.The developed tools are based on integration with well known public software RRD,Cricket fping,iperf.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos 10375017 and 10575029.
文摘The topcolour-assisted technicolour （TC2） model is an interesting dynamical theory among the various new physics models. We cMculate the total tt cross section and the relative correction of the TC2 model to the cross section at Tevatron Run Ⅱ and LHC. At the Tevatron Run Ⅱ, the cross section predicted by the standard model （SM） is consistent with the experimental data, and in most parameter spaces of the TC2 model, the relative correction of the TC2 model to the cross section is too small to be detectable. We find that the tt cross section is more sensitive to the parameters of the TC2 model at the LHC and the relative correction of the TC2 model to the cross section is over 10% in general. Such a value of the relative correction should be large enough to be detectable at the LHC. Therefore, it is promising to find the clue of the TC2 model via the tt production at the LHC.
文摘In addition to deployment of the commercial management products,a number of public and self developed tools are successfully used at Fermilab for monitoring of the campus network.A suite of tools consisting of several programs running in a distributed environment to measure network parameters such as average round-trip time.traffic,throughput,error rate,DNS responses and others from different locations in the network is used.The system maintains a central archive of data,makes analysis and graphical representation available via a web-based interface.The developed tools are based on integration with well known public software RRD,Cricket fping,iperf.
