Zobrazeno 1 - 10
of 242
pro vyhledávání: '"Krnjaic, Gordan"'
Electronic excitations in atomic, molecular, and crystal targets are at the forefront of the ongoing search for light, sub-GeV dark matter (DM). In many light DM-electron interactions the energy and momentum deposited is much smaller than the electro
Externí odkaz:
http://arxiv.org/abs/2407.14598
We study the cosmological impact of warm, dark-sector relic particles produced as Hawking radiation in a primordial-black-hole-dominated universe before big bang nucleosynthesis. If those dark-sector particles are stable, they would survive to the pr
Externí odkaz:
http://arxiv.org/abs/2406.08535
Autor:
Cesarotti, Cari, Krnjaic, Gordan
We study future lepton collider prospects for testing predictive models of leptophilic dark matter candidates with a thermal origin. We calculate experimental milestones for testing the parameter space compatible with freeze-out and the associated co
Externí odkaz:
http://arxiv.org/abs/2404.02906
Accelerator-based experiments reliant on charged pion and kaon decays to produce muon-neutrino beams also deliver an associated powerful flux of muons. Therefore, these experiments can additionally be sensitive to light new particles that preferentia
Externí odkaz:
http://arxiv.org/abs/2311.10829
Thermal relic dark matter below $\sim 10 \ \text{GeV}$ is excluded by cosmic microwave background data if its annihilation to visible particles is unsuppressed near the epoch of recombination. Usual model-building measures to avoid this bound involve
Externí odkaz:
http://arxiv.org/abs/2311.00032
Autor:
Åkesson, Torsten, Bravo, Cameron, Brennan, Liam, Bryngemark, Lene Kristian, Butti, Pierfrancesco, Dukes, E. Craig, Dutta, Valentina, Echenard, Bertrand, Eichlersmith, Thomas, Eisch, Jonathan, Elén, Einar, Ehrlich, Ralf, Froemming, Cooper, Furmanski, Andrew, Gogate, Niramay, Grieco, Chiara, Group, Craig, Herde, Hannah, Herwig, Christian, Hitlin, David G., Horoho, Tyler, Incandela, Joseph, Ketchum, Wesley, Krnjaic, Gordan, Li, Amina, Mans, Jeremiah, Masterson, Phillip, Middleton, Sophie, Moreno, Omar, Mullier, Geoffrey, Muse, Joseph, Nelson, Timothy, O'Dwyer, Rory, Östman, Leo, Oyang, James, Pascadlo, Jessica, Pöttgen, Ruth, Sarmiento, Luis G., Schuster, Philip, Solt, Matthew, Suarez, Cristina Mantilla, Tompkins, Lauren, Toro, Natalia, Tran, Nhan, Wallin, Erik, Whitbeck, Andrew, Zhang, Danyi
The Light Dark Matter eXperiment (LDMX) is an electron-beam fixed-target experiment designed to achieve comprehensive model independent sensitivity to dark matter particles in the sub-GeV mass region. An upgrade to the LCLS-II accelerator will increa
Externí odkaz:
http://arxiv.org/abs/2308.15173
There is controversy surrounding the origin and evolution of our universe's largest supermassive black holes (SMBHs). In this study, we consider the possibility that some of these black holes formed from the direct collapse of primordial density pert
Externí odkaz:
http://arxiv.org/abs/2308.00756
Autor:
Krnjaic, Gordan, Pinetti, Elena
In the next decade, the proposed Line Emission Mapper (LEM) telescope concept is poised to revolutionize Galactic and extragalactic X-ray sensitivity. The instruments aboard LEM feature unprecedented eV scale energy resolution and an effective area o
Externí odkaz:
http://arxiv.org/abs/2307.00041
Publikováno v:
Phys. Rev. D 109, 063514 (2024)
We propose that the dark matter of our Universe could be sterile neutrinos which reside within the twin sector of a mirror twin Higgs model. In our scenario, these particles are produced through a version of the Dodelson-Widrow mechanism that takes p
Externí odkaz:
http://arxiv.org/abs/2305.06364
Autor:
Krnjaic, Gordan, Trickle, Tanner
Publikováno v:
Phys. Rev. D 108, 015024 (2023)
Massive vector particles are minimal dark matter candidates that motivate a wide range of laboratory searches, primarily exploiting a postulated kinetic mixing with the photon. However, depending on the high energy field content, the dominant vector
Externí odkaz:
http://arxiv.org/abs/2303.11344