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Axions are hypothetical particles that constitute leading candidates for the identity of dark matter. Here, the authors improve previous exclusion bounds on axion-like particles in the range of 1.4–200 peV, and report direct terrestrial limits on the coupling of protons and neutrons with axion-like dark matter.
An emerging set of proposals seeks to use arrays of optomechanical sensors to detect weak distributed forces, for applications ranging from gravity-based subterranean imaging to dark matter searches. We propose an array of entanglement-enhanced optomechanical sensors to improve the broadband sensitivity of distributed force sensing.
The authors present an approach for detecting ultralight bosonic dark matter using collider and beam dump experiments. The method relies on the time-varying mass of dark sector mediators, which serve as a portal between the dark and Standard Model sector. CMS Open Data are used to demonstrate that this method enhances sensitivity by around one order of magnitude compared to the double-peak method.
The gluonic gravitational form factor of the proton was determined using various models, and these analyses showed that the mass radius of the proton was smaller than the electric charge radius.
The ATLAS Collaboration reports the observation of the electroweak production of two jets and a Z-boson pair. This process is related to vector-boson scattering and allows the nature of electroweak symmetry breaking to be probed.
The renormalization group is a key ingredient in methods of improving perturbative computations in particle physics. Here I briefly discuss its role in perturbative quantum chromodynamics and particularly the running of its coupling constant.
Reducing resource usage will improve the environmental impact of high-performance computing — but doing so can clash with the science goals of funders. Computational physicist Peter Skands explains how he approached the conflict.
Ten years after the discovery of the Higgs boson, the ATLAS Collaboration probes its underlying mechanism, the electroweak symmetry breaking, by measuring the scattering of Z bosons, one of the mediators of the weak interactions.
In proton–proton collisions, the CMS Collaboration measures the simultaneous production of three particles, each consisting of a charm quark and a charm antiquark, which yields insights into how the proton’s constituents interact.
The CMS Collaboration finds evidence for the contribution from off-shell Higgs bosons to the production of events with two Z bosons. This provides a measurement of the Higgs boson’s width.
Sarah Malik explains how quantum random walks can be used to model the cascades of quarks and gluons resulting from the proton–proton collisions at the Large Hadron Collider.
