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hep-ph2020★ 1 cited
Reduction for one-loop tensor Feynman integrals in the relativistic quantum field theories at finite temperature and/or finite density
Hao-Ran Chang
The \emph{conventional} Passarino-Veltman reduction is a systematic procedure based on the Lorentz covariance, which can efficiently reduce the one-loop tensor Feynman integrals in…
hep-ph2013★ 38 cited
Higgs decays to gamma l+ l- in the standard model
Yi Sun, Hao-Ran Chang, Dao-Neng Gao
The radiative Higgs decays h -> gamma l+l- with l=e,mu and tau are analyzed in the standard model using m_h=125 GeV. Both tree and one-loop diagrams for the processes are evaluated…
hep-ph2012★ 5 cited
One loop integrals reduction
Yi Sun, Hao-Ran Chang
By further examining the symmetry of external momenta and masses in Feynman integrals, we fulfilled the method proposed by Battistel and Dallabona, and showed that recursion relati…