A scenario for high accuracy τ mass measurement at BEPC-Ⅱ  

作　　者：M. N. Achasov V. E. Blinov 蔡啸 傅成栋 F. A. Harris Q. Liu 莫晓虎 N. Yu. Muchnoi I. B. Nikolaev 秦庆 A. G. Shamov K. Yu. Todyshev 王贻芳 张建勇 

机构地区：[1]Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences,11 Lavrentyev, Novosibirsk 630090, Russia [2]Institute of High Energy Physics, Chinese Academy of Sciences [3]University of Hawaii, Honolulu,HI 96822, USA

出　　处：《Chinese Physics C》2012年第7期573-577,共5页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10775412, 10825524, 10935008);Instrument Developing Project of Chinese Academy of Sciences (YZ200713);Major State Basic Research Development Program (2009CB825203, 2009CB825206);the Knowledge Innovation Project of Chinese Academy of Sciences (KJCX2-YW-N29);RFBR 08-02-00328-a, 08-02-00251-a, 08-02-92200-NSFC-a;SB RAS joint project No. 32 for fundamental researcher with CAS;Department of Energy (DE-FG02-04ER41291) (U. Hawaii)

摘　　要：Scenarios for the τ mass measurement at the upgraded Beijing Electron-Positron Collider （BEPC- II ） are studied. A nested minimization procedure is used to optimize the data taking plan. It is found that by using five energy points with the total integrated luminosity of 100 pb-1, the τ mass can be determined with a statistical error of 50 keV.Scenarios for the τ mass measurement at the upgraded Beijing Electron-Positron Collider （BEPC- II ） are studied. A nested minimization procedure is used to optimize the data taking plan. It is found that by using five energy points with the total integrated luminosity of 100 pb-1, the τ mass can be determined with a statistical error of 50 keV.

关 键 词：τ mass scan optimization uncertainty 

分 类 号：O572.214[理学—粒子物理与原子核物理]