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pro vyhledávání: '"Cappiello, Christopher V."'
Autor:
Bramante, Joseph, Cappiello, Christopher V., Diamond, Melissa D., Kim, J. Leo, Liu, Qinrui, Vincent, Aaron C.
We demonstrate a novel mechanism for producing dark compact objects and black holes through a dark sector, where all the dark matter can be dissipative. Heavy dark sector particles with masses above $10^4$ GeV can come to dominate the Universe and yi
Externí odkaz:
http://arxiv.org/abs/2405.04575
Publikováno v:
JCAP 11 (2023) 003
We study the morphology of the 511 keV signal that could be produced by exciting dark matter (XDM) in the Milky Way. In this model, collisions between dark matter particles excite the dark matter to a state that can then decay back to the ground stat
Externí odkaz:
http://arxiv.org/abs/2307.15114
Dark matter is typically assumed not to couple to the photon at tree level. While annihilation to photons through quark loops is often considered in indirect detection searches, such loop-level effects are usually neglected in direct detection, as th
Externí odkaz:
http://arxiv.org/abs/2307.13727
As a supernova shock expands into space, it may collide with dark matter particles, scattering them up to velocities more than an order of magnitude larger than typical dark matter velocities in the Milky Way. If a supernova remnant is close enough t
Externí odkaz:
http://arxiv.org/abs/2210.09448
Autor:
Dhakal, Pawan, Prohira, Steven, Cappiello, Christopher V., Beacom, John F., Palo, Scott, Marino, John
We show that dark-matter candidates with large masses and large nuclear interaction cross sections are detectable with terrestrial radar systems. We develop our results in close comparison to successful radar searches for tiny meteoroids, aggregates
Externí odkaz:
http://arxiv.org/abs/2209.07690
Publikováno v:
Phys. Rev. D 103, 023019 (2021)
Certain strongly interacting dark matter candidates could have evaded detection, and much work has been done on constraining their parameter space. Recently, it was shown theoretically that the scattering cross section for $m_\chi \gtrsim 1$ GeV poin
Externí odkaz:
http://arxiv.org/abs/2008.10646
Autor:
Digman, Matthew C., Cappiello, Christopher V., Beacom, John F., Hirata, Christopher M., Peter, Annika H. G.
Publikováno v:
Phys. Rev. D 100, 063013 (2019)
Critical probes of dark matter come from tests of its elastic scattering with nuclei. The results are typically assumed to be model-independent, meaning that the form of the potential need not be specified and that the cross sections on different nuc
Externí odkaz:
http://arxiv.org/abs/1907.10618
Publikováno v:
Phys. Rev. D 100, 103011 (2019)
The non-detection of GeV-scale WIMPs has led to increased interest in more general candidates, including sub-GeV dark matter. Direct detection experiments, despite their high sensitivity to WIMPs, are largely blind to sub-GeV dark matter. Recent work
Externí odkaz:
http://arxiv.org/abs/1906.11283
Publikováno v:
Phys. Rev. D 99, 063004 (2019)
Sub-GeV dark matter candidates are of increasing interest, because long-favored candidates such as GeV-scale WIMPs have not been detected. For low-mass dark matter, model-independent constraints are weak or nonexistent. We show that for such candidat
Externí odkaz:
http://arxiv.org/abs/1810.07705
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