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B particle

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B particle
n.
Either of two subatomic particles in the meson family, one neutral and one positively charged, both of which have masses 10,331 times that of an electron and average lifetimes of 1.6 × 10-12 seconds. See Table at subatomic particle.
B particle
Either of two subatomic particles in the meson family, one neutral and one positively charged, both of which have masses 10,331 times that of an electron and average lifetimes of 1.6 × 10-12 seconds. B particles contain bottom quarks. See Table at subatomic particle.


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From the lengths of the trajectories of the B particles, the lifetime of negative beauty comes to 0.
Aging and decay of beauty by Science News
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