🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsTürkçeРусскийفارسیहिन्दी한국어中文日本語EntityQ876518· pop 31· linked from 233 articlesJ/psi mesonneutral meson having charm quark and charm anti quarkConnectionsparticle physicsEntityquarkoniumEntityCategoriesHistory of physicsMesonsOniaSubatomic particles with spin 1