Halo-independent bounds on the non-relativistic effective theory of WIMP-nucleon scattering from direct detection and neutrino observations

Kang, Sunghyun; Kar, Arpan; Scopel, S.

doi:10.1088/1475-7516/2023/03/011

Cited by 4 publications

(8 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As far as the quantitative bound on the coupling is concerned, in ref. [47] it was shown that for the case of elastic scattering (δ = 0) increasing u max by a factor of ten (i.e. to a value that largely exceeds the expectations for the escape speed in our Galaxy) weakens the single-stream bound by at most a factor of two, due to the suppression of the form factor in the WIMP-nucleus scattering process at large nuclear recoil energies.…”

Section: Jcap11(2023)077mentioning

confidence: 59%

“…where c NT max (u) and c DD max (u) correspond to c max (u) for the NT and the DD experiments, respectively, and ũ denotes the speed where c NT max and c DD max intersect at a finite value c, i.e., c NT max (ũ) = c DD max (ũ) = c. In this case, using eq. (4.7) it can be shown that (see [38] and [47] for details) the halo-independent bound on the coupling is:…”

Section: Jcap11(2023)077 4 Halo-independent Bounds With the Single-st...mentioning

confidence: 99%

“…( 5.4) quantifies how much heavier the nuclear target N must be in a DD experiment in order to overcome the fact that in a terrestrial detector the incoming WIMPs are slower. Such required hierarchy depends on the astrophysical parameters u max and u esc , while it does not directly depend on the details of the WIMP-nucleus interaction (although for a different type of interaction the targets T and N driving capture in the Sun and DD may change, leading to different kinematic consequences [47]). In particular, for u max > u ref max the value of r min in eq.…”

Section: Jcap11(2023)077mentioning

confidence: 99%

“…Such complementarity between DD and capture in the Sun allows to probe experimentally the f (u) distribution in the full range of WIMP incoming velocities, and was exploited in ref. [38] to develop a particularly straightforward method that allows to obtain conservative constraints [47] that are independent of the f (u) and only require the assumption (1.1). For convenience, in the following we will refer to such procedure as the "single stream method", and to the ensuing constraints as "single-stream halo-independent" bounds.…”

Section: Introductionmentioning

confidence: 99%

“…As pointed out in [38,47] the single-stream method can only be applied when the expected rate is proportional to a single coupling or cross section. In the following, we will discuss the two popular cases of a spin-independent (SI) WIMP-nucleus cross section, with a scattering amplitude proportional to the atomic mass number of the target, or a spindependent (SD) interaction with a scattering amplitude proportional to the coupling between the spins of the WIMP and of the nucleus.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Halo-independent bounds on Inelastic Dark Matter

Kang,

Kar,

Scopel

2023

J. Cosmol. Astropart. Phys.

Self Cite

View full text Add to dashboard Cite

We discuss halo-independent constraints on the Inelastic Dark Matter (IDM) scenario, in which a Weakly Interaction Massive Particle (WIMP) state χ with mass m χ interacts with nuclear targets by upscattering to a heavier state χ′ with mass m χ + δ. In order to do so we adopt the single-stream method, that exploits the complementarity of Direct Detection (DD) and Capture in the Sun to extend the experimental sensitivity to the full range of incoming WIMP speeds. We show that a non-vanishing mass splitting δ modifies such range, and that for particular combinations of m χ and δ the complementarity between the two detection techniques required by the method is lost. In such cases a specific choice of the WIMP speed distribution in our Galaxy is required to obtain a constraint on the WIMP-nucleus cross section or coupling. Specifically, assuming for the escape velocity in our Galaxy u esc the reference value u esc ref = 560 km/s a halo-independent bound is possible when δ ≲ 510 keV for a Spin-Independent interaction and when δ ≲ 245 keV for a Spin-Dependent interaction (with the Spin-Independent value slightly reduced to δ ≲ 490 keV when u esc > u esc ref). In the low WIMP mass regime the bound from capture in the Sun is always more constraining than that for DD and is sufficient alone to provide a halo-independent constraint, while for large WIMP masses the halo-independent bound is given by a combination of capture in the Sun and DD. In this latter case the reduction in sensitivity due to the mass splitting δ is more pronounced for DD than for capture, and capture plays a more important role to determine the halo-independent bound compared to the elastic case. In particular we find that, for u esc = u esc ref, unless the mass of the target used in DD is larger than about four times that of the target driving capture in the Sun, DD does not play any role in the determination of the maximal value of δ for which a halo-independent bound is possible. We also discuss the issue of thermalization of IDM within the Sun and show that its impact on our results is mild.

show abstract

Section: Jcap11(2023)077mentioning

confidence: 59%

Section: Jcap11(2023)077 4 Halo-independent Bounds With the Single-st...mentioning

confidence: 99%

Section: Jcap11(2023)077mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Halo-independent bounds on Inelastic Dark Matter

Kang,

Kar,

Scopel

2023

J. Cosmol. Astropart. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

Jet substructure probe to unfold singlet-doublet dark matter in the presence of non-standard cosmology

Das

Konar

Kundu

et al. 2023

J. High Energ. Phys.

View full text Add to dashboard Cite

We examine the singlet-doublet fermionic dark matter model, where the non-thermal production of the dark matter in light of a non-standard cosmology demands a significantly large interaction rate than the typical radiation-dominated Universe. Despite being a model of freeze-in light dark matter and heavy mediator, the characteristic long-lived particle searches at the collider experiment and the displaced vertex signature do not help in probing such a dark sector since this non-standard interaction mandates nearly prompt decay. We make a counterproposal to probe such signal with di-fat-jets generated from the boosted decays of massive vector bosons and Standard Model Higgs, along with the substantial missing transverse momentum to probe the dark matter at LHC. Interestingly, substructure variables associated with these fat jets have an additional handle to tackle the extensive QCD background as it encodes implicit footmarks of their origin. We adopt the multivariate analysis with the booted decision tree to constrain the measured relic density allowed parameter space of dark matter in the presence of the modified cosmological scenario. Our study shows how the non-trivial expansion affects dark matter production in the early Universe and alters the required search strategies at colliders. This probe provides the best discovery prospect at the HL-LHC for extended parameter space now opened up in the dark sector.

show abstract

Isospin-violating dark matter at liquid noble detectors: new constraints, future projections, and an exploration of target complementarity

Cheek,

Price,

Sandford

2023

Eur. Phys. J. C

View full text Add to dashboard Cite

There is no known reason that dark matter interactions with the Standard Model should couple to neutrons and protons in the same way. This isospin violation can have large consequences, modifying the sensitivity of existing and future direct detection experimental constraints by orders of magnitude. Previous works in the literature have focused on the zero-momentum limit which has its limitations when extending the analysis to the Non-Relativistic Effective Field Theory basis (NREFT). In this paper, we study isospin violation in a detailed manner, paying specific attention to the experimental setups of liquid noble detectors. We analyse two effective Standard Model gauge invariant models as interesting case studies as well as the more model-independent NREFT operators. This work demonstrates the high degree of complementarity between the target nuclei xenon and argon. Most notably, we show that the Standard Model gauge-invariant formulation of the standard spin-dependent interaction often generates a sizeable response from argon, a target nuclei with zero spin. This work is meant as an update and a useful reference to model builders and experimentalists.

show abstract

Halo-independent bounds on the non-relativistic effective theory of WIMP-nucleon scattering from direct detection and neutrino observations

Cited by 4 publications

References 71 publications

Halo-independent bounds on Inelastic Dark Matter

Halo-independent bounds on Inelastic Dark Matter

Jet substructure probe to unfold singlet-doublet dark matter in the presence of non-standard cosmology

Isospin-violating dark matter at liquid noble detectors: new constraints, future projections, and an exploration of target complementarity

Contact Info

Product

Resources

About