国家自然科学基金(10435070)

作品数:9被引量:3H指数:1
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相关作者:陈国明刘烈钱思进刘明辉祝成光更多>>
相关机构:中国科学院北京大学山东大学更多>>
相关期刊:《北京大学学报(自然科学版)》《山东大学学报(理学版)》《物理》《Chinese Physics C》更多>>
相关主题:CMSDISCRIMINATIONΠLHC大型强子对撞机更多>>
相关领域:理学天文地球更多>>
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Discrimination of converted photons and neutral pions at high energies
《Chinese Physics C》2012年第10期979-984,共6页肖虹 陈国明 陶军全 卞建国 范嘉伟 梁松 孟祥伟 沈玉乔 唐志成 王健 王健 汪先友 王征 徐明 许伟伟 杨民 严琪 
Supported by Natural Science Foundation of China (10435070, 10773011, 10721140381, 10099630);China Ministry of Science and Technology (2007CB16101, 2010CB833000)
In the LHC experiment, the H →γγ channel provides a clean final state with an effective mass peak that is reconstructed with great precision, despite the small branching ratio. As a consequence, the H →γγ channe...
关键词:converted γ π 0 DISCRIMINATION TMVA 
A study of hadronic shower development in the ECAL of the alpha magnetic spectrometer Ⅱ被引量:1
《Chinese Physics C》2011年第8期763-768,共6页藏京京 陈国明 卞建国 范嘉伟 李祖豪 梁松 孟祥伟 陶军全 唐志成 王健 王健2 汪先友 王征 徐明 许伟伟 肖虹 严琪 杨民 
Supported by National Natural Science Foundation of China (10435070,10721140381,10099630);China Ministry of Science and Technology (2007CB16101);Chinese Academy of Sciences (KJCX2-N17,1730911111)
In this paper, we studied the development of hadronic shower in an electromagnetic calorimeter of Alpha Magnetic Spectrometer Ⅱ. Two parametrized empirical formulae were proposed to describe the hadronic shower shape...
关键词:hadronic shower ECAL parametrisation e±-π± discrimination 
On the detectability of Galactic dark matter annihilation into monochromatic gamma-rays
《Chinese Physics C》2011年第8期725-734,共10页唐志成 袁强 毕效军 陈国明 
Supported by Natural Science Foundation of China (10435070,10773011,10721140381,10099630);China Ministry of Science and Technology (2007CB16101,2010CB833000)
Monochromatic y-rays are thought to be the smoking gun signal for identifying dark matter annihilation. However, the flux of monochromatic y-rays is usually suppressed by virtual quantum effects since dark matter shou...
关键词:dark matter line emission GAMMA-RAY DETECTABILITY 
Application of the parametric for mulae for electromagnetic showers in unconverted γ/π~0 discrimination
《Chinese Physics C》2011年第3期269-277,共9页陶军全 陈国明 杨民 卞建国 李祖豪 梁松 孟祥伟 唐志成 王健 王健 汪先友 王征 肖虹 徐明 藏京京 张振霞 
Supported by National Natural Science Foundation of China (10435070, 10721140381, 10099630);China Ministry of Science and Technology (2007CB16101);Chinese Academy of Sciences (KJCX2-N17, 1730911111)
In the LHC experiment, the neutral pions produced during jet fragmentation are the background sources for all physics channels with high-energy photons in their final state. In this paper, the application of the three...
关键词:electromagnetic shower parametric formulae γ/π0 discrimination 
Study of new boson W1^± in the Minimal Higgsless Model at the LHC
《Chinese Physics C》2010年第4期427-432,共6页张振霞 卞建国 陈国明 陈明水 李祖豪 梁松 孟祥伟 祁永辉 唐志成 陶军全 王健1 王健2 王征 汪先友 王建雄 肖虹 杨民 臧晶晶 张斌 张震 
Supported by NSFC (10435070,10721140381,10099630);China Ministry of Science and Technology (2007CB16101);CAS(KJCX2-N17,1730911111);China Postdoctoral Science Foundation (20090450577)
The Minimal Higgsless Model predicts the existence of new vector gauge boson W1^±, By the process PP →W1^±qq →W^±Z^0qq, Z^0→ 1^+1^-, W^±→ qq (1=e,μ; q is hadronized to be jets), we study the sensitivity of...
关键词:Minimal Higgsless Model W1^± sensitivity integrated luminosity 
利用CMS实验研究底夸克偶素的产生和极化
《北京大学学报(自然科学版)》2009年第3期371-376,共6页刘烈 钱思进 杨宗长 
国家自然科学基金资助项目(10435070)
介绍了在大型强子对撞机(LHC)上的CMS探测器对底夸克偶素产生截面的测量方法、提取极化参数的算法以及触发率的计算。给出了利用CMS实验探测的底夸克偶素的分辨率、重建效率和触发率等。目的是在前所未有的超高能量下,通过测量强子对撞...
关键词:底夸克偶素 色单态 色八重态 极化参数 大型强子对撞机 非相对论量子色动力学 
J/ψ→μ~+μ~- reconstruction in the CMS experiment
《Chinese Physics C》2009年第3期161-169,共9页杨宗长 钱思进 
Supported by NSFC (10435070, 10099630);Ministry of Science and Technology of China (2007CB816101)
In this paper the J/ψ→μ^+μ^- reconstruction performance in the CMS experiment at the LHC is studied in detail by using B8→J/ψφ→μμKK events. The reconstruction efficiencies of J/ψ mesons and their decay muo...
关键词:CMS J/Ψ reconstruction efficiency Level-1 trigger HLT (High Level Trigger) 
在大型强子对撞机上的CMS实验被引量:2
《物理》2009年第1期11-17,共7页陈国明 
国家自然科学基金重点项目(批准号:10435070);国家自然科学基金重大项目(批准号:10721140381);国家重点基础研究发展计划(批准号:2007CB816101);中国科学院(批准号:KJCX2-YW-N17)资助项目
LHC(large hadron collider)是目前世界上能量最高的强子对撞机.CMS(compact muon solenoid,中文译名是紧凑型缪子螺线管探测器)是LHC上的主要实验计划之一,其目标就是要寻找Higgs粒子或者超出标准模型的其他新粒子,探清自然界的电弱破...
关键词:大型强子对撞机(LHC) 紧凑型缪子螺线管探测器(CMS) 希格斯粒子 暗物质 
W玻色子极化的蒙特卡罗研究
《山东大学学报(理学版)》2008年第5期14-18,共5页刘明辉 祝成光 
国家自然科学基金资助项目(10435070)
在t双轻子衰变道中,利用积分亮度为0.7fb-1的模拟数据量,通过测量W玻色子衰变末态粒子角分布的方法对其极化进行了模拟研究。最终的测量结果为:F0=0.709±0.066(syst)±0.044(stat),FL=0.297±0.077(syst)±0.026(stat),FR=-0.005±0....
关键词:tt双轻衰变 W玻色子极化 事例重建 
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