LHC上WW产生截面的测量(英文)  

WW production cross section measurement at LHC

作　　者：汪虎林[1] 刘衍文[1] 蒋一[1] 张沛[1] 

机构地区：[1]中国科学技术大学近代物理系,安徽合肥230026

出　　处：《中国科学技术大学学报》2010年第6期604-607,650,共5页JUSTC

摘　　要：通过蒙特卡罗数据以及WW衰变的轻子道研究了中心能量在10TeV时pp碰撞中WW的产生截面.在0.2fb-1的积分亮度下,通过3个轻子道末态(ee,eμ,μμ)可以期望找到51个信号事例和22个本底事例.可以期望在ATLAS实验的初期,WW产生截面测量的精度能达到17%.An MC study of the WW production cross section in pp collisions at a center of mass energy of 10 TeV was presented. The WW→lνl＇ν（l,l＇=e,μ） decay channels were analyzed using the fully simulated ATLAS Monte Carlo datasets. The expected sensitivity of the measurement was evaluated for an integrated luminosity of 0.2 fb-1. Across the three final states （ee,eμ,μμ）,51 signal events and 22 background events are expected. The WW production cross section was expected to be measured at a precision of 17% at the initial phase of the ATLAS experiment.

关 键 词：LHC ATLAS 标准模型 电弱 双波色子 WW 

分 类 号：O572.22[理学—粒子物理与原子核物理]