D-s meson
noun Physics.
a positively charged meson having a mass 3852 times that of the electron and a mean lifetime of approximately 4.7 X 10-13 seconds.
Also called D-s particle.
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Science definitions for d-s particle
D-s particle
[ dē′ĕs′ ]
A positively charged meson having a mass 3,852 times that of the electron and a mean lifetime of approximately 4.7 X 10-13 seconds. See Table at subatomic particle.
The American Heritage® Science Dictionary
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