| 单词 | lambda hyperon | 
| 释义 | lambda hyperon [`lam·dǝ `hī·pǝ´rän]  PARTICLE PHYSICS 1. A quasi-stable baryon, forming an isotopic singlet, having zero charge and hypercharge, a spin of 1/2, positive parity and mass of 1115.5 megaelectronvolts.Designated Λ. Also known as lambda particle.  2. Any baryon resonance having zero hypercharge and total isotopic spin; designated ΛJP(m), where m is the mass of the baryon in megaelectronvolts, and J and P are its spin and parity (if known).  | 
	
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