J/psi meson

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

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Notion

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Science and technology

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What Wikipedia says

The J/ψ (J/psi) meson is a subatomic particle, a flavor-neutral meson consisting of a charm quark and a charm antiquark. Mesons formed by a bound state of a charm quark and a charm antiquark are generally known as "charmonium" or psions.

Excerpt from the Wikipedia article “J/psi meson”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: CDF Collaboration, Public domain, via Wikimedia Commons.