We investigate singlet scalar dark matter (DM) candidate in a left-right symmetric gauge model with two Higgs bidoublets (2HBDM) in which the stabilization of the DM particle is induced by the discrete symmetries P and CP. According to the observed DM abundance, we predict the DM direct and indirect detection cross sections for the DM mass range from 10 GeV to 500 GeV. We show that the DM indirect detection cross section is not sensitive to the light Higgs mixing and Yukawa couplings except the resonance regions. The predicted spin-independent DM-nucleon elastic scattering cross section is found to be significantly dependent on the above two factors. Our results show that the future DM direct search experiments can cover the most parts of the allowed parameter space. The PAMELA antiproton data can only exclude two very narrow regions in the 2HBDM. It is very difficult to detect the DM direct or indirect signals in the resonance regions due to the Breit-Wigner resonance effect.
Searching for lepton flavor violating decays tau to Pl in Minimal R-symmetric Supersymmetric Standard Model
在最小R对称超对称标准模型的情形下，分析了轻子味破坏衰变$τ\rightarrow Pl$（$P=π,η,η';\;l=e,μ$）。对分支比BR $(τ\rightarrow P e)$和BR $(τ\rightarrow P μ)$的预测分别受到质量插入参数$δ^{13}$和$δ^{23}$的影响。这些参数受到分支比BR（$τ\rightarrow e (μ) γ$）和BR（$τ\rightarrow 3e(μ)$）的实验界限的约束。结果表明，$Z$企鹅在参数空间的大范围内主导BR（$τ\rightarrow Pl$）的预测。BR（$τ\rightarrow Pl$）的分支比预测为，至少，五个数量级小于目前的实验界限和三个数量级小于未来的实验灵敏度。
Riemann $ζ(4)$ function contributions to $O\left({α_s}^5\right)$ terms of Adler D-function and Bjorken polarized sum rule in $SU\left(N_c\right)$ QCD: results and consequences
Searching for a Dark Dimension Right-handed Neutrino in KATRIN
High Energy Physics Research Unit, Faculty of Science, Chulalongkorn University（朱拉隆功大学理学院高能物理研究单元）；Laboratoire de Physique Théorique et Hautes Energies - LPTHE Sorbonne Université, CNRS（巴黎索邦大学理论及高能物理实验室（LPTHE））
