lambda particle

Or lambda baryon

noun

Physics.

1. any of a family of neutral baryons with strangeness −1 or charm +1, and isotopic spin 0. The least massive member of the lambda family was the first strange particle to be discovered. Λ

lambda particle

1. An electrically neutral baryon having a mass 2,183 times that of the electron and a mean lifetime of approximately 2.6 × 10 ^{- 10} seconds.

2. See Table at subatomic particle

Word History and Origins

Origin of lambda particle¹

First recorded in 1950–55

Example Sentences

When this happens, the result is a lambda particle.

From Scientific American