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Proton's width measured to unparalleled precision, narrowing the path to new physics

⁨63⁩ ⁨likes⁩

Submitted ⁨⁨6⁩ ⁨days⁩ ago⁩ by ⁨misk@piefed.social⁩ to ⁨science@mander.xyz⁩

https://phys.org/news/2026-02-proton-width-unparalleled-precision-narrowing.html

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

source

Comments

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  • starik@lemmy.zip ⁨6⁩ ⁨days⁩ ago

    r~p~ = 0.8406(15) fm

    Saved you a click

    source
    • christopher@lemmy.ca ⁨6⁩ ⁨days⁩ ago

      I wish I was smart enough to know how small that is

      source
      • SoleInvictus@lemmy.blahaj.zone ⁨6⁩ ⁨days⁩ ago

        If the average human hair is about 50 billion femtometers wide, it means it takes about 58 billion photons lined up side to side to equal that width. So really fucking small.

        source
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    • dnick@sh.itjust.works ⁨6⁩ ⁨days⁩ ago

      Damn scientists and their fancy equipment, my tape measure will barely get down to the 0.8(14) fm range

      source