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+--- Thread: Protons are lighter than thought, which may solve a big puzzle (/thread-3886.html)
Protons are lighter than thought, which may solve a big puzzle - C C - Jul 3, 2017
https://www.newscientist.com/article/2139372-protons-are-lighter-than-thought-which-may-solve-a-big-puzzle/
EXCERPT: The proton has lost a little of its bulk. A fresh attempt to pin down its mass, with three times the precision of the previous best try, finds that the subatomic particle is 30 billionths of a per cent lighter than we thought. [...] The slimming down of the proton could help us fine-tune experiments that aim to understand why the amount of matter in the universe dwarfs the amount of antimatter, says Makoto Fujiwara, who works on CERN’s ALPHA experiment, seeking differences between hydrogen and its antimatter counterpart....