摘要
Analytical formulae for the phase space factors and three-momenta of three-and four-body final states are derived for all sets of independent kinematic variables containing invariant mass variables.These formulae will help experimental physicists to perform data analysis.As an example,we show how to use these formulae to distinguish the different mechanisms of the e+p→e+J/ψ+p process when searching the signals of P_(c) states in the energy region of the Electron-Ion collider at China(EicC).
作者
Kang Yu
De-Min Li
Jia-Jun Wu
余康;李德民;吴佳俊(School of Physics and Microelectronics,Zhengzhou University,Zhengzhou 450001,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China)
基金
Supported by the Fundamental Research Funds for the Central Universities
the National Key R&D Program of China (2020YFA0406400)
the Key Research Program of the Chinese Academy of Sciences (XDPB15)。
