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 f...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.展开更多
基金Supported by National Natural Science Foundation of China (10775412, 10825524, 10935008)Instrument Developing Project of Chinese Academy of Sciences (YZ200713)+4 种基金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-aSB RAS joint project No. 32 for fundamental researcher with CASDepartment of Energy (DE-FG02-04ER41291) (U. Hawaii)
文摘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.
