A combined analysis of PandaX, LUX, and XENON1T experiments within the framework of dark matter effective theory

Abstract

Weakly interacting massive particles are a widely well-probed dark matter candidate by the dark matter direct detection experiments. Theoretically, there are a large number of ultraviolet completed models that consist of a weakly interacting massive particle dark matter. The variety of models makes the comparison with the direct detection data complicated and often non-trivial. To overcome this, in the non-relativistic limit, the effective theory was developed in the literature which works very well to significantly reduce the complexity of dark matter-nucleon interactions and to better study the nuclear response functions. In the effective theory framework for a spin-1/2 dark matter, we combine three independent likelihood functions from the latest PandaX, LUX, and XENON1T data, and give a joint limit on each effective coupling. The astrophysical uncertainties of the dark matter distribution are also included in the likelihood. We further discuss the isospin violating cases of the interactions. Finally, for both dimension-five and dimension-six effective theories above the electroweak scale, we give updated limits of the new physics mass scales.

PandaX-II constraints on spin-dependent WIMP-nucleon effective interactions

“…The motivation to focus exclusively on such candidates has weakened due in particular to collider constraints [12]. An alternative approach, effective field theory (EFT) [13,14,15], has gained favor because it allows one to do an analysis [16,17,18,19] free of theory assumptions. One selects an EFT scalee.g., the light-quark or a nucleon scale -and constructs a complete basis of effective operators to a given order, taking into account all general symmetries limiting that basis.…”

Neutrinophilic two Higgs doublet model with dark matter under an alternative $$U(1)_{B-L}$$ U ( 1 ) B - L gauge symmetry

“…In Ref. [22], the lower limit of Z is given as ∼ 1 TeV which is obtained by data from PandaX, LUX and XENON1T including spindependent direct detection results [18]. This constraint is much weaker than the constraint from collider search of Z as shown in Fig.…”

“…We show some samples of the allowed regions for z and the mass scale of m ν in Fig. 1, where the upper figures represent NH and the lower one IH, while the left figures shows the mass scale of m ν 11 in terms of z and the right ones the mass scale of m ν 11 and m ν 22 . They suggest that the typical mass scale of m ν is 10 −12 ∼ 10 −11 GeV.…”

“…The operator in Eq. (3.9) induces the spin-dependent operator s ⊥ X · q and s X · ( s N × q) [20][21][22]; q is the transferred momentum, s X (N ) is the spin operator of DM (nucleon) and ⊥ indicates a direction perpendicular to the q direction. In Ref.…”

Light fermionic WIMP dark matter with light scalar mediator

“…For the present constraints (XENON1T, CRESST, and Darkside-50), we use the Poisson distribution likelihoods given by the DDCalc code [43]. On the other hand, we involve the future constraints (SuperCDMS(SNOLAB), LZ, and NEWS-SNOLAB) assuming a half-Gaussian [89] form with the central value being set to be zero to figure out the future prospects of the light WIMP.…”