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HELAC-Onia: an automatic matrix element generator for heavy quarkonium physics
Hua-Sheng Shao
By the virtues of the Dyson-Schwinger equations, we upgrade the published code \mtt{HELAC} to be capable to calculate the heavy quarkonium helicity amplitudes in the framework of N…
Spin correlations in polarizations of P-wave charmonia and impact on polarization
Hua-Sheng Shao, Kuang-Ta Chao
Based on a general form of the effective vertex functions for the decays of P-wave charmonia $\chicj$, angular distribution formulas for the subsequent decays $\chicj\rightarrow \j…
Type 1 2HDM as effective theory of supersymmetry
Hua Shao
It is generally believed that the low energy effective theory of the minimal supersymmetric standard model is the type 2 two Higgs doublet model. We will show that the type 1 two H…
Feynman Rules for the Rational Part of One-loop QCD Corrections in the MSSM
Hua-Sheng Shao, Yu-Jie Zhang
The complete set of Feynman rules for the rational part R of QCD corrections in the MSSM are calculated at the one-loop level, which can be very useful in the next-to-leading order…
Gauge mediation with heavy doublet superparticles
Hua Shao
It is challenging for supersymmetry if the 125 GeV Higgs boson is confirmed by the LHC. In the case of small squark mixing it is inevitable to introduce heavy top squarks to lift t…
J/psi polarization at hadron colliders in nonrelativistic QCD
Kuang-Ta Chao, Yan-Qing Ma, Hua-Sheng Shao +2
With nonrelativistic QCD factorization, we present a full next-to-leading order computation of the polarization observable for production at hadron colliders including all…