All Research

Experimental Test of Parity Conservation in Beta Decay

Physical Review·
Read the paperDOI: 10.1103/PhysRev.105.1413

TL;DR

Scientists studied how a very rare, artificial element called Fermium-250 breaks apart naturally. They found that this radioactive element decays in two different ways: most of the time (89.5%) it captures an electron from its own atoms, but sometimes (10.5%) it spits out an alpha particle instead.

The branching ratio of the two modes of decay of Fm'", i.e. , E.C. /n, was found to be about 8.5which gives 89.5% decay by electron capture and 10.5% by alpha emission. It was not possible to measure the cross section for the Cf'"(n, 3n)Fm'" reaction because Fm'" could also be produced from other californium isotopes in the target.

  • 1Fermium-250 decays through two competing pathways: electron capture (89.5%) and alpha emission (10.5%)
  • 2The branching ratio between electron capture and alpha decay was measured to be approximately 8.5
  • 3Direct measurement of the nuclear reaction cross section for producing Fermium-250 from Californium was not possible due to interference from other californium isotopes
  • 4This represents rare experimental data on the decay properties of superheavy artificial elements
Scientific American·

Baby chicks pass the bouba-kiki test challenging a theory of language

Imagine you hear the made-up words "bouba" and "kiki" - which one sounds round and soft, and which sounds sharp and spiky? Most people say "bouba" sounds round and "kiki" sounds sharp. This is called the bouba-kiki effect, and scientists thought it might be special to humans and related to how we developed language. But this study found that baby chickens, just hours after hatching, make the same connections! When they heard "bouba-like" sounds, 80% of the chicks walked toward round, curved shapes rather than spiky ones. This suggests that connecting sounds with shapes isn't learned or uniquely human - it might be a basic way that many animals' brains work, going back hundreds of millions of years in evolution.

bouba-kiki effect
comparative psychology
arXiv·

Single-minus gluon tree amplitudes are nonzero

Imagine tiny particles called gluons are like spinning tops. Their spin can be in one of two directions, which physicists call 'plus' or 'minus'. For decades, the rulebook seemed to say that you could never have a situation where just one gluon was spinning 'minus' and all the others were spinning 'plus' — that outcome was thought to be zero. This paper found a loophole. Under very specific, purely mathematical conditions that don't exist in our physical reality but are useful for calculations, this interaction can happen. The researchers wrote down the exact recipe for it, fixing a small but important detail in our fundamental rulebook for how the universe works.

High Energy Physics
Tree Amplitudes

Sub-part-per-trillion test of the Standard Model with atomic hydrogen

Scientists made an incredibly precise measurement of light emitted by hydrogen atoms that tested one of physics' most fundamental theories - the Standard Model - to an accuracy of 0.7 parts per trillion. This measurement also resolved a long-standing disagreement about the size of protons by confirming the smaller value found in previous experiments with exotic atoms.

Cell Genomics·

Liver exerkine reverses aging- and Alzheimer’s-related memory loss via vasculature

This discovery could lead to new treatments for age-related memory loss and Alzheimer's disease that don't require physical exercise. Instead of just telling people to exercise more, doctors might eventually be able to give patients the specific liver protein (GPLD1) or drugs that block TNAP to achieve the brain benefits of exercise. This is especially important for elderly or disabled people who cannot exercise regularly but still want to protect their memory and cognitive function.