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Scientists detect signals at the smallest scale ever explored
Researchers have detected particle interactions at a scale around 100 billion times smaller than an atom, a realm some physicists call the “zeptoverse”. The result, from the Large Hadron Collider, could help scientists investigate dark matter and develop a more complete account of how the Universe works.
The Cambridge-led team studied beauty quarks, which decay after about one and a half trillionths of a second, and observed their interactions at a billion-trillionth of a metre. Scientists say more data is needed to look for possible new particles; an agreed £150m upgrade to the detector would increase the frequency of the relevant decays tenfold. The UK has withdrawn its share of funding for the upgrade, raising concerns that British researchers could miss discoveries and training opportunities, while some early-career scientists are considering work abroad.
In short
- Scientists observed particle interactions at a record-small scale.
- The findings may help researchers investigate dark matter.
- UK funding cuts put involvement in a detector upgrade at risk.
Steelman: both sides, in good faith
The strongest fair case each way — we don't pick a winner.
The case for
Funding the detector upgrade could give researchers access to many more relevant particle decays, improving the chance of testing ideas about dark matter and the fundamental laws of nature. Supporters may also argue that continued UK participation protects scientific expertise, training opportunities and the country’s role in international research.
The case against
With public funds limited, the UK can reasonably weigh this upgrade against other research and public priorities, especially since the scientific payoff is uncertain and further data is needed before any new particles can be established. Opponents may argue that the expected benefits do not yet justify the cost, or that researchers can pursue these questions through other facilities and collaborations.
Explained simply
The Large Hadron Collider near Geneva sends particles rushing into collisions so scientists can study the smaller particles inside atoms. One of these, the beauty quark, exists for only a tiny fraction of a second before it decays into other particles.
Researchers use the pattern of those decays to test whether particles behave as current theories predict. Finding a difference could point to particles or forces not yet known, and help explain puzzles such as dark matter, which makes up part of the Universe but has not been directly identified.
A planned detector upgrade would let scientists collect more beauty-quark decays, giving them more chances to spot unusual patterns. The UK’s withdrawal of funding has raised questions about British researchers’ access to the upgraded equipment and the training opportunities it could bring.