xi baryon

American  

[zahy bar-ee-ahn, sahy, ksee] / ˈzaɪ ˈbær iˌɑn, ˈsaɪ, ˈksi /

noun

plural

xi baryons

1. Physics. either of two related baryons containing two strange quarks, one neutral with a mass of 2,573 times that of an electron and an average lifetime of 2.9 × 10^-10 seconds, and the other negatively charged with a mass of 2,586 times that of an electron and an average lifetime of 1.6 × 10^-10 seconds.

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xi baryon Scientific  

/ zī,sī,ksē /

1. Either of two subatomic particles in the baryon family, one neutral and one negatively charged, with masses of 2,572 and 2,585 times that of the electron and average lifetimes of 2.9 × 10 ^{- 10} and 1.6 × 10 ^{- 10} seconds.

2. See Table at subatomic particle

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