Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Ma, Xiao-Dong"'
In this paper, we systematically investigate the general dark matter-electron interactions within the framework of effective field theories (EFT). We consider both the non-relativistic (NR) EFT and the relativistic EFT descriptions of the interaction
Externí odkaz:
http://arxiv.org/abs/2406.10912
Autor:
Ge, Shao-Feng, Ma, Xiao-Dong
We propose the nucleon consumption induced by dark matter as a new scenario to overcome the energy threshold of direct detection. It can be realized with proton ($\chi + p \rightarrow \chi + \ell^+$) or neutron ($\chi + n \rightarrow \chi + \nu$) tar
Externí odkaz:
http://arxiv.org/abs/2406.00445
In this letter we revisit general dark matter (DM)-bound-electron interactions studied previously in the influential work of [Catena et al., Phys. Rev. Res. 2, 033195 (2020)]. We derive the DM-electron response functions and find a crucial minus sign
Externí odkaz:
http://arxiv.org/abs/2405.04855
Recently Belle II reported the first measurement of $B^+\to K^++{\rm invisible (inv)}$, which is $2.7\sigma$ above the standard model (SM) prediction. If confirmed, this calls for new physics beyond SM. In the SM, the invisible particles are neutrino
Externí odkaz:
http://arxiv.org/abs/2403.12485
Effective field theory (EFT) provides a model-independent framework for interpreting the results of dark matter (DM) direct detection experiments. In this study, we demonstrate that the two fermionic DM-quark tensor operators, $(\bar{\chi} i\sigma^{\
Externí odkaz:
http://arxiv.org/abs/2401.05005
Belle II has recently reported the new measurement ${\cal B}(B^+\to K^+\nu\bar\nu)=(2.3\pm0.7)\times 10^{-5}$ \cite{Belle-II:2023esi} which is two times larger than their previous result (although consistent within errors) and about $2.7\,\sigma$ hig
Externí odkaz:
http://arxiv.org/abs/2309.12741
We introduce the effective field theory of two different light dark particles interacting with the standard model (SM) light states in a single vertex, termed dark sector effective field theory (DSEFT). We focus on the new light particles with spin u
Externí odkaz:
http://arxiv.org/abs/2309.12166
Fermionic dark matter can be pairly produced and hence searched with missing energy at colliders. We extend such probe to the associated production of a neutrino and a dark sector fermion at the future $e^+ e^-$ colliders such as CEPC, FCC-ee, ILC, a
Externí odkaz:
http://arxiv.org/abs/2306.00657
Autor:
Liao, Yi, Ma, Xiao-Dong
The scotogenic neutrino seesaw model is a minimal extension of the standard model with three $\mathbb{Z}_2$-odd right-handed singlet fermions $N$ and one $\mathbb{Z}_2$-odd Higgs doublet $\eta$ that can accommodate the tiny neutrino mass and provide
Externí odkaz:
http://arxiv.org/abs/2210.04270
We consider decays of $B$ and $K$ mesons into a pseudo-scalar or vector meson plus missing energy. Within the SM, these modes originate from flavor changing neutral current (FCNC) processes with two neutrinos in the final state. In this paper we cons
Externí odkaz:
http://arxiv.org/abs/2209.05223