
William DeRocco
Ph.D. Student in Physics, admitted Autumn 2016
All Publications
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Discovering supernova-produced dark matter with directional detectors
PHYSICAL REVIEW D
2020; 102 (7)
View details for DOI 10.1103/PhysRevD.102.075036
View details for Web of Science ID 000582565300009
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Exploring the robustness of stellar cooling constraints on light particles
PHYSICAL REVIEW D
2020; 102 (7)
View details for DOI 10.1103/PhysRevD.102.075015
View details for Web of Science ID 000576892700007
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Muons in Supernovae: Implications for the Axion-Muon Coupling
PHYSICAL REVIEW LETTERS
2020; 125 (5)
View details for DOI 10.1103/PhysRevLett.125.051104
View details for Web of Science ID 000553692300001
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Observing the dark sector with supernovae
IOP PUBLISHING LTD. 2020
View details for DOI 10.1088/1742-6596/1468/1/012048
View details for Web of Science ID 000539995300047
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Muons in Supernovae: Implications for the Axion-Muon Coupling.
Physical review letters
2020; 125 (5): 051104
Abstract
The high temperature and electron degeneracy attained during a supernova allow for the formation of a large muon abundance within the core of the resulting protoneutron star. If new pseudoscalar degrees of freedom have large couplings to the muon, they can be produced by this muon abundance and contribute to the cooling of the star. By generating the largest collection of supernova simulations with muons to date, we show that observations of the cooling rate of SN 1987A place strong constraints on the coupling of axionlike particles to muons, limiting the coupling to g_{aμ}<10^{-8.1} GeV^{-1}.
View details for DOI 10.1103/PhysRevLett.125.051104
View details for PubMedID 32794860
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Constraining Primordial Black Hole Abundance with the Galactic 511 keV Line
PHYSICAL REVIEW LETTERS
2019; 123 (25)
View details for DOI 10.1103/PhysRevLett.123.251102
View details for Web of Science ID 000502796900002
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Supernova signals of light dark matter
PHYSICAL REVIEW D
2019; 100 (7)
View details for DOI 10.1103/PhysRevD.100.075018
View details for Web of Science ID 000490474400001
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Observable signatures of dark photons from supernovae
JOURNAL OF HIGH ENERGY PHYSICS
2019
View details for DOI 10.1007/JHEP02(2019)171
View details for Web of Science ID 000460261800002
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Constraining Primordial Black Hole Abundance with the Galactic 511 keV Line.
Physical review letters
2019; 123 (25): 251102
Abstract
Models in which dark matter consists entirely of primordial black holes (PBHs) with masses around 10^{17} g are currently unconstrained. However, if PBHs are a component of the Galactic dark matter density, they will inject a large flux of energetic particles into the Galaxy as they radiate. Positrons produced by these black holes will subsequently propagate throughout the Galaxy and annihilate, contributing to the Galactic 511 keV line. Using measurements of this line by the INTEGRAL satellite as a constraint on PBH positron injection, we place new limits on PBH abundance in the mass range 10^{16}-10^{17} g, ruling out models in which these PBHs constitute the entirety of dark matter.
View details for DOI 10.1103/PhysRevLett.123.251102
View details for PubMedID 31922803
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Axion interferometry
PHYSICAL REVIEW D
2018; 98 (3)
View details for DOI 10.1103/PhysRevD.98.035021
View details for Web of Science ID 000441718100006