Supported by National Natural Science Foundation of China (10099630);Ministry of Science and Technology of China(2007CB816101)
One of the first physics results that CMS will hopefully obtain will be the analysis of heavy quarkonium productions, including the Υ cross-section measurement. Since the Υ production cross-section from p-p collisio...
Supported by NSFC (10099630);Ministry of Science and Technology of China (2007CB816101)
We report the methods and plans for measuring the differential cross section of J/ψ→μ^+μ^- production, using data to be collected in the first LHC run by the CMS detector. Making use of the large B-hadron lifetim...
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...