PREPARATION STUDY FOR HADRON COLLIDER PHYSICS AT LHC

我们一直在寻找在高能强子对撞机上找到任何指示重要终态的信号的可能性，例如希格斯粒子。为了寻找希格斯粒子，我们发现我们的端盖Muon触发系统具有足够高的效率。另一方面，我们发现来自背景过程的贡献强烈地依赖于它的建模。特别是在强子对撞机实验中最常见的小喷注事件中，根据ISAJET-SIMPLATO：我们的模拟显示了比DPMJET计算多200倍的结果。这项测试是在我们有趣的伪快度(η)区域(比方说|η|&gt；1)进行的，目的是捕捉µ介子。类似的测试应该在其他地区进行。我们可以用我们去年为此目的而建造的系统进行这些计算，没有任何重大问题。我们已经在ATLAS会议上展示了这些结果。我们此时此刻的结论是继续这样做，并比较QCD过程的模型。我们还将包括日本的NLO计算。我们还尝试了新开发的名为面向对象软件的软件。这将在真正的实验中得到进一步的管理，因此这项工作是重要的。目前，我们正在检查我们以前的结果和新的结果。重要的是保持与旧版本的一致性，但也要保持可靠性。

We have searched for possibilities to find any signals which indicate important final states at the high energy hadron collider, such as Higgs partiacels. To search for the Higgs particles, we have found that our endcap muon trigger system has sufficiently high efficiency. On the other hand, we have found the contribution from the back ground processes depend strongly on its modeling. Especially, in the mini-jet events, which is most popular at hadron collider experiments, our simulation according to ISAJET-simulato : shows 200 times more than that of DPMJET calculations. This test has been carried out at our interesting pseud-rapidity (η) region (say |η|>1) to catch muons. Similar tests should be done at other region. We could carried out those calculation with the system which we have constructed for this purpose last year without any major troubles. We have showed those results at the ATLAS-conferences. Our conclusion at this moment is to proceed this way and to compare the models on the QCD processes. We will include Japanese NLO calculations as well. We have also tried with newly developed software named Object Oriented software. This will be managed further in the real experiment, so that this work is important. At this time, we are checking our previous results and those given by the new one. It's Important to keep consistency with the old one but also reliability.