Researchers establish fundamental limit on how light bosonic dark matter can be
In a new study published in Physical Review Letters, scientists have estimated a new lower bound on the mass of ultra-lightweight bosonic dark matter particles.
Page 3: Research news on Hypothetical particle physics models
Hypothetical particle physics models constitute a research area focused on constructing and analyzing theoretical frameworks that extend or modify the Standard Model to explain observed anomalies and unresolved phenomena. These models introduce new fields, symmetries, or spacetime structures, often incorporating entities such as supersymmetric partners, extra gauge bosons, axions, or particles arising from extra dimensions or composite dynamics. Research in this area emphasizes internal consistency (renormalizability, unitarity, anomaly cancellation), compatibility with precision measurements and collider bounds, and predictive power for phenomena such as dark matter, neutrino masses, baryogenesis, and flavor structure, using tools from quantum field theory, effective field theories, and numerical simulations.
Results of the HAYSTAC Phase II search for dark matter axions
Axions, hypothetical subatomic particles that were first proposed by theoretical physicists in the late 1970s, remain among the most promising dark matter candidates. Physics theories suggest that the interactions between ...
Quantum sensors tested for next-generation particle physics experiments
To learn more about the nature of matter, energy, space, and time, physicists smash high-energy particles together in large accelerator machines, creating sprays of millions of particles per second of a variety of masses ...
Quantum Physics
Apr 24, 2025
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Might the proton decay in other places or at other times?
Does the proton decay? While this was a famous prediction of Grand Unified Theories (GUTS) developed in the 1970s and 1980s, experimentalists have ruled it out—or rather, put lower limits on its mean lifetime of about 1034 ...
Hypercharge breaking scenarios could explain the baryon asymmetry of the universe
The Standard Model (SM), the main physics framework describing elementary particles and the forces driving them, outlines key patterns in physical interactions referred to as gauge symmetries. One of the symmetries it describes ...
In a first, physicists set an upper limit in the search for hybrid mesons
Carnegie Mellon University's Professor Curtis Meyer and his research colleagues explore an uncharted world inside protons and neutrons. For the first time, researchers have provided measurements describing a maximum boundary ...
General Physics
Feb 11, 2025
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An even ghostlier neutrino may rule the universe
Strange "right-handed" neutrinos may be responsible for all the matter in the universe, according to new research.
Astronomy
Jan 16, 2025
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Discovery of new class of particles could take quantum mechanics one step further
Amid the many mysteries of quantum physics, subatomic particles don't always follow the rules of the physical world. They can exist in two places at once, pass through solid barriers and even communicate across vast distances ...
Quantum Physics
Jan 8, 2025
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The first search for soft unclustered energy patterns in proton–proton collisions at 13TeV
A key objective of many physics studies is to experimentally observe exotic phenomena beyond the Standard Model (SM) that are predicted by theoretical models. These include hidden valley models, which predict the existence ...
More comprehensive search for sterile neutrinos comes up empty
Particle physicists have been looking for so-called "sterile neutrinos" for a few decades now. They are a hypothesized particle that would have a tiny mass like the three known neutrinos but would not interact by the weak ...
