Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Morrison, Logan"'
Publikováno v:
JCAP07(2024)049
We study the possibility that dark matter re-enters kinetic equilibrium with a radiation bath after kinetic decoupling, a scenario we dub kinetic recoupling. This naturally occurs, for instance, with certain types of resonantly-enhanced interactions,
Externí odkaz:
http://arxiv.org/abs/2310.20513
We provide a comprehensive study of observable spectra from dark matter pair-annihilation or decay into sterile (right-handed) neutrinos. This occurs, for instance, in neutrino portal dark matter models, where a sterile neutrino acts as the portal be
Externí odkaz:
http://arxiv.org/abs/2211.05996
Publikováno v:
JCAP 11 (2022) 033
We present a new open-source package, Hazma 2, that computes accurate spectra relevant for indirect dark matter searches for photon, neutrino, and positron production from vector-mediated dark matter annihilation and for spin-one dark matter decay. T
Externí odkaz:
http://arxiv.org/abs/2207.07634
Publikováno v:
Physical Review D, Vol. 106, No. 11 (2022)
For the purpose of minimizing the number of sample model evaluations, we propose and study algorithms that utilize (sequential) versions of likelihood-to-evidence ratio neural estimation.We apply our algorithms to a supersymmetric interpretation of t
Externí odkaz:
http://arxiv.org/abs/2203.13403
Publikováno v:
JCAP08(2021)044
The indirect detection of dark matter particles with mass below the GeV scale has recently received significant attention. Future space-borne gamma-ray telescopes, including All-Sky-ASTROGAM, AMEGO, and GECCO, will probe the MeV gamma-ray sky with un
Externí odkaz:
http://arxiv.org/abs/2104.06168
Publikováno v:
Phys. Rev. D 104, 023509 (2021)
We generalize gravitational particle production in a radiation-dominated $CPT$-symmetric universe to non-standard, but also $CPT$-symmetric early universe cosmologies. We calculate the mass of a right-handed "sterile" neutrino needed for it to be the
Externí odkaz:
http://arxiv.org/abs/2103.08626
Autor:
Coogan, Adam, Moiseev, Alexander, Morrison, Logan, Profumo, Stefano, Baring, Matthew G., Bolotnikov, Aleksey, Carini, Gabriella A., Herrmann, Sven C., Longo, Francesco, Stecker, Floyd W., Vigliano, Alessandro Armando, Woolf, Richard S.
Publikováno v:
Phys. Rev. D 107, 023022 (2023)
We outline the science opportunities in the areas of searches for dark matter and new physics offered by a proposed future MeV gamma-ray telescope, the Galactic Explorer with a Coded Aperture Mask Compton Telescope (GECCO). We point out that such an
Externí odkaz:
http://arxiv.org/abs/2101.10370
Autor:
Tejwani, Leon, Ravindra, Neal G., Lee, Changwoo, Cheng, Yubao, Nguyen, Billy, Luttik, Kimberly, Ni, Luhan, Zhang, Shupei, Morrison, Logan M., Gionco, John, Xiang, Yangfei, Yoon, Jennifer, Ro, Hannah, Haidery, Fatema, Grijalva, Rosalie M., Bae, Eunwoo, Kim, Kristen, Martuscello, Regina T., Orr, Harry T., Zoghbi, Huda Y., McLoughlin, Hayley S., Ranum, Laura P.W., Shakkottai, Vikram G., Faust, Phyllis L., Wang, Siyuan, van Dijk, David, Lim, Janghoo
Publikováno v:
In Neuron 7 February 2024 112(3):362-383
Publikováno v:
Phys. Rev. Lett. 126, 171101 (2021)
Light, asteroid-mass primordial black holes, with lifetimes in the range between hundreds to several millions times the age of the universe, are well-motivated candidates for the cosmological dark matter. Using archival COMPTEL data, we improve over
Externí odkaz:
http://arxiv.org/abs/2010.04797
A dark QCD sector is a relatively minimal extension of the Standard Model (SM) that admits Dark Matter (DM) candidates but requires no portal to the visible sector beyond gravitational interactions: A "nightmare scenario" for DM detection. We conside
Externí odkaz:
http://arxiv.org/abs/2010.03586