Cold dark matter identification: Diurnal modulation reexamined

Hasenbalg, F.; Abriola, D.; Collar, J. I.; Gregorio, D.E. Di; Gattone, A.O.; Huck, H.; Tomasi, D.; Urteaga, I.

doi:10.1103/physrevd.55.7350

Cited by 48 publications

(49 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, we note that LUX may soon improve on the XENON100 limit, because of lower electron backgrounds [35]. We estimate (supported by our own Monte Carlo simulation; see also [36][37][38][39]) that for σ n 10 −30 cm 2 the limits become invalidated as elastic scattering of DM inside the Earth slowly degrades energy and flux of the incident particles; the corresponding approximate demarcation line is labeled "m.f.p.". Importantly, the next generation of dual-phase liquid scintillator direct detection experiments, such as XENON1T [40] and LZ [41], are coming online or are being planned.…”

Section: Consider Now a Standard Dm-nucleus Recoil Cross Section Dσ/dementioning

confidence: 63%

Probing Sub-GeV Dark Matter with Conventional Detectors

2017

View full text Add to dashboard Cite

The direct detection of dark matter particles with mass below the GeV scale is hampered by soft nuclear recoil energies and finite detector thresholds. For a given maximum relative velocity, the kinematics of elastic dark matter nucleus scattering sets a principal limit on detectability. Here, we propose to bypass the kinematic limitations by considering the inelastic channel of photon emission from bremsstrahlung in the nuclear recoil. Our proposed method allows us to set the first limits on dark matter below 500 MeV in the plane of dark matter mass and cross section with nucleons. In situations where a dark-matter-electron coupling is suppressed, bremsstrahlung may constitute the only path to probe low-mass dark matter awaiting new detector technologies with lowered recoil energy thresholds.

show abstract

Section: Consider Now a Standard Dm-nucleus Recoil Cross Section Dσ/dementioning

confidence: 63%

Probing Sub-GeV Dark Matter with Conventional Detectors

2017

View full text Add to dashboard Cite

show abstract

“…However the flux of dark matter particles reaching from below will be hugely attenuated due to the stopping effect, thus creating a daily modulated signal. The possibility of diurnal modulated signals has been suggested earlier in the context of SIMPs [4,40] and of mirror dark matter [41].…”

Section: Diurnal Modulationmentioning

confidence: 82%

“…In this case, the vast majority of the WIMPs will arrive in underground detectors like LUX with no significant energy loss and therefore candidates like these are susceptible to the severe LUX constraints. If we consider an annually average value of α ¼ 43°, the most appropriate location for such a detector will be in southern Argentina (for example Sierra Grande as suggested previously [4,41]), Chile, or New Zealand. We find for example that at such a location, a 1 GeV DM mass with a contact cross section σ p ¼ 10 −30 cm 2 (allowed by Fig.…”

Section: Diurnal Modulationmentioning

confidence: 99%

Daily modulation as a smoking gun of dark matter with significant stopping rate

Kouvaris

Shoemaker

2014

Phys. Rev. D

View full text Add to dashboard Cite

We point out that for a range of parameters, the flux of DM may be stopped significantly by its interactions with the Earth. This can significantly degrade the sensitivity of direct detection experiments to DM candidates with large interactions with terrestrial nuclei. We find that a significant region of parameter space remains unconstrained for DM ≲ a few GeV. For DM candidates with moderate levels of stopping power, the flux of DM may be blocked from below but not above a detector, thereby producing a novel daily modulation. This can be explored by low threshold detectors placed on the surface or in shallow sites in the south hemisphere. A. InsulatorsDifferent experiments lie on different sites with different ground compositions. However by considering for example the site of the LUX experiment which is located at the Homestake mine, chemical element composition analysis [10] suggests the significant existence of insulating chemical compounds such as SiO 2 , Al 2 O 3 , FeO, etc. Scattering of WIMPs with electrons from these chemical compounds can * shoemaker@cp3-origins.net † kouvaris@cp3.dias.sdu.dk PHYSICAL REVIEW D 90, 095011 (2014) 1550-7998=2014=90(9)=095011(11) 095011-1

show abstract

“…There has been much recent interest in signals and constraints for DM which interacts strongly with nuclei and whose distribution may therefore be affected by scattering in the Earth [20][21][22]. Much of this has been focused on light (sub-GeV) DM where lower limits from conventional direct detection experiments weaken, meaning that moderate DM-nucleon scattering cross sections have not yet been excluded [23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Earth scattering of superheavy dark matter: Updated constraints from detectors old and new

Kavanagh

2018

Phys. Rev. D

View full text Add to dashboard Cite

Direct searches for dark matter (DM) are continuously improving, probing down to lower and lower DM-nucleon interaction cross sections. For strongly interacting massive particle (SIMP) dark matter, however, the accessible cross section is bounded from above due to the stopping effect of the atmosphere, Earth, and detector shielding. We present a careful calculation of the SIMP signal rate, focusing on superheavy DM (m χ ≳ 10 5 GeV) for which the standard nuclear-stopping formalism is applicable, and provide code for implementing this calculation numerically. With recent results from the low-threshold CRESST 2017 surface run, we improve the maximum cross section reach of direct detection searches by a factor of about 5000, for DM masses up to 10 8 GeV. A reanalysis of the longer-exposure, subsurface CDMS-I results (published in 2002) improves the previous cross section reach by 2 orders of magnitude, for masses up to 10 15 GeV. Along with complementary constraints from SIMP capture and annihilation in the Earth and Sun, these improved limits from direct nuclear scattering searches close a number of windows in the SIMP parameter space in the mass range 10 6 GeV to 10 13 GeV, of particular interest for heavy DM produced gravitationally at the end of inflation.

show abstract

Cold dark matter identification: Diurnal modulation reexamined

Cited by 48 publications

References 9 publications

Probing Sub-GeV Dark Matter with Conventional Detectors

Probing Sub-GeV Dark Matter with Conventional Detectors

Daily modulation as a smoking gun of dark matter with significant stopping rate

Earth scattering of superheavy dark matter: Updated constraints from detectors old and new

Contact Info

Product

Resources

About