Conveners
DM V
- Nobuchika Okada (U. Alabama )
- Nobuchika Okada (University of Alabama)
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Jason Kumar26/05/2021, 14:00DM
We consider searches for the inelastic scattering of low-mass dark matter against nuclei at direct detection experiments, using the Migdal effect. We find that there are degeneracies between the dark matter mass and the mass splitting that are difficult to break. Using XENON1T data we set bounds on a previously unexplored region of the inelastic dark matter parameter space. For the case of...
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Dr Carlos Blanco (Princeton University & Stockholm University)26/05/2021, 14:15DM
Aromatic organic compounds, because of their small excitation energies $\sim \mathcal O$(few eV) and scintillating properties, are promising targets for detecting dark matter of mass $\sim \mathcal O$(few MeV). Additionally, their planar molecular structures lead to large anisotropies in the electronic wavefunctions, yielding a significant daily modulation in the event rate expected to be...
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Peizhi Du (Stony Brook University)26/05/2021, 14:30
We point out several unexplored low-energy backgrounds to sub-GeV dark matter searches, which arise from high-energy particles of cosmic or radioactive origin that interact with detector materials. In this talk, I will focus on Cherenkov radiation and luminescence from electron-hole pair recombination. I will show that these processes provide plausible explanations of the observed events at...
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Mukul Sholapurkar (Stony Brook University)26/05/2021, 14:45DM
Several low-threshold detectors looking for sub-GeV dark matter have observed a large rate of low-energy events. The SENSEI experiment, which looks for small ionization signals in Silicon Skipper CCD to search for sub-GeV dark matter, has also observed a large single-electron event rate which cannot be explained by previously explored backgrounds. In this talk, I will focus on radiative...
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Yining You (University of Florida)26/05/2021, 15:00DM
The detection of low mass dark matter is under development with the advancement of experiment techniques. The superfluid helium-4 detector covers an extensive detection range from DM mass keV to GeV among the setups. I will present a complete theoretical framework for all processes within the superfluid to fill in the missing theory for sub-GeV DM detection. First, we use effective field...
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Amit Bhoonah26/05/2021, 15:15DM
Large panels of etched plastic, situated aboard the Skylab Space Station and inside the Ohya quarry near Tokyo, have been used to set limits on fluxes of cosmogenic particles. These plastic particle track detectors also provide the best sensitivity for some heavy dark matter that interacts strongly with nuclei. We revisit prior dark matter bounds from Skylab, and incorporate geometry-dependent...
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Manoranjan Dutta (Indian Institute of Technology Hyderabad)26/05/2021, 15:30DM
We propose a self-interacting inelastic dark matter (DM) scenario as a possible origin of the recently reported excess of electron recoil events by the XENON1T experiment. Two quasi-degenerate Majorana fermion DM interact within themselves via a light hidden sector massive gauge boson and with the standard model particles via gauge kinetic mixing. We also consider an additional long-lived...
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Mr Satyabrata Mahapatra (INDIAN INSTITUTE OF TECHNOLOGY HYDERABAD)26/05/2021, 15:45DM
Motivated by the growing evidence for lepton flavour universality violation after the first results from Fermilab's muon $(g-2)$ measurement, we revisit one of the most widely studied anomaly free extensions of the standard model namely, gauged $L_{\mu}-L_{\tau}$ model, known to be providing a natural explanation for muon $(g-2)$. We also incorporate the presence of dark matter (DM) in this...
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