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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-3445
DTSTART:20141014T200000Z
DTEND:20141014T210000Z
DTSTAMP:20260419T171950Z
LAST-MODIFIED:20141013T194105Z
LOCATION:5280 Chamberlin Hall
SUMMARY:Detecting Boosted Dark Matter from the Sun with Large Volume N
 eutrino Detectors\, Theory Seminar (High Energy/Cosmology)\, Josh Berg
 er
DESCRIPTION:We study novel thermal Dark Matter (DM) scenarios where th
 e annihilation of DM captured in the Sun produces boosted stable parti
 cles in the dark sector. These stable particles can be the annihilatin
 g DM itself\, as in the scenario of semi-annihilating DM where DM poss
 esses non-minimal stabilization symmetries\, or can be a lighter subdo
 minant DM component\, as in the scenario of a multi-component DM secto
 r. We investigate both of these possibilities and present concrete mod
 els as proofs of concept\, considering DM mass in the wide range of O(
 1)-O(100) GeV. With a large Lorentz boost\, these boosted DM can be de
 tected in large volume terrestrial experiments\, such as experiments d
 esigned for neutrino physics or proton decay searches\, via neutral-cu
 rrent-like interactions with nuclei or electrons. In particular\, we p
 ropose a search for proton tracks pointing towards the Sun\, which is 
 a primary detection channel for boosted DM from the Sun at neutrino ex
 periments. We focus on studying the signals at Cherenkov-radiation-bas
 ed detectors such as Super-Kamiokande (SK) and its upgrade Hyper-Kamio
 kande (HK). We find that with spin-dependent scattering as the dominan
 t DM-nucleus interaction at low energies\, boosted DM can leave detect
 able signals at SK or HK\, while being consistent with current DM dire
 ct detection constraints. The boosted DM signal highlights the distinc
 tive signatures that can arise in non-minimal DM sectors.
URL:https://www.physics.wisc.edu/events/?id=3445
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