Direct limits on the interaction of antiprotons with axion-like dark matter

Abstract

Astrophysical observations indicate that there is roughly five times more dark matter in the Universe than ordinary baryonic matter [1], with 1 arXiv:2006.00255v1 [physics.atom-ph] 30 May 2020

In praise of replication studies and null results

“…Reading Nature's 1873 obituary 1 of the philosopher and economist John Stuart Mill, you would think economists and scientists were two sides of the same research coin -that economics was welcomed as part of the scientific tradition, and vice versa. But that was then.…”

Link between antimatter and dark matter probed

“…Particles called axions could account for the elusive dark matter that pervades the Universe. Smorra et al 5 present experimental limits on the coupling between axion dark matter and antiprotons. These bounds are expressed in terms of an axion-antiproton interaction parameter and vary with the axion mass or the frequency of the axion if the particle is represented as a wave (eV, electronvolts; GeV, gigaelectronvolts; Hz, hertz).…”

“…The resulting mutant protein, KRAS G12C , is found infrequently in various cancers. It is most prevalent in lung cancer, and is responsible for approximately 12% of non-small cell lung cancers 4,5 .…”

Bounds on very weakly interacting ultra light scalar and pseudoscalar dark matter from quantum gravity

“…In particular experiments that search for oscillations in the fundamental constants resulting from the coupling of scalar or pseudoscalar dark matter with the standard model [18][19][20][21][22][23][24][25][26] have a great potential of testing such models in the mass range m φ ∈ [10 −16 , 10 −23 ]eV. The optimal sensitivity of such experiments typically lies around 10 −22 eV, and the bounds on the sensitivity are set by the fact that the oscillation frequency is proportional to the mass of the scalar field.…”