The positively charged proton, which sits inside the nuclei of atoms, has a radius of less than a trillionth of a millimeter, according to a publication in Science on Thursday.
Scientists have scratched their heads at the size of a proton. Different methods used to measure the radius of a subatomic particle produce different numbers, something called a proton radius puzzle. This latest study concluded that its radius is only 0.833 femtometers – it is 8.33 x 10 -16 meters.
"The level of precision needed to determine the size of a proton has made this the most difficult measurement our laboratory has ever attempted. ", Says Eric Hessels, co-author of the article and a professor working at the Department of Physics and Astronomy at York University in Canada.
The number of 0.833 femtometers is quite similar to the previous estimate of 0.880 femtometers made by another group of eggheads in 201
The boffins quietly applaud the possible discovery ry of a new fundamental particle: Sterile neutrinos
READ MORE 19659 lambs in muon hydrogen is a fantastic experiment that allows scientists to narrow down the size of a proton, first, the muons are orbiting protons to create muon hydrogen. This is an unstable arrangement and as the structure collapses, the electron falls from two different energy levels, emitting an amount of energy known as displacement of the Lamb.
The difference in energy levels is affected by the interaction of the electron and the proton with each other. By measuring lamb displacement, it allows physicists to study the properties of a proton. Physicists at the University of York and the University of Toronto, Canada, spent eight years creating their own version of the experiment to measure the proton radius. ®