Publications by authors named "Bjoern Penning"
Article Synopsis
- Superconducting qubits can get messed up by tiny energy sources that break apart the pairs of particles needed for superconductivity, making a problem known as "quasiparticle poisoning."
- Researchers found that a silicon crystal glued to its holder has way more low-energy sound events (called phonons) compared to a similar crystal that wasn't glued, which could affect how well these systems work.
- The extra phonon events in the glued crystal get less frequent over time, suggesting that the stress from the glue is causing these disturbances and may be impacting other scientific devices too.
The monojet search, looking for events involving missing transverse energy (E_{T}) plus one or two jets, is the most prominent collider dark matter search. We show that multijet searches, which look for E_{T} plus two or more jets, are significantly more sensitive than the monojet search for pseudoscalar- and scalar-mediated interactions. We demonstrate this in the context of a simplified model with a pseudoscalar interaction that explains the excess in GeV energy gamma rays observed by the Fermi Large Area Telescope.
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