The measured width of the ψ(3685) meson is 277 keV. Estimate its lifetime.?
The measured width of the ψ(3685) meson is 277 keV. Estimate its lifetime.
______________s
Thank you.
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The measured width of the ψ(3685) meson is 277 keV. Estimate its lifetime.
______________s
Thank you.
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The width is equal to hbar/lifetime
hbar=1.055x10^-34J/s
First convert keV to J
277keV(1000v/ke)(1.6x10^-19J/v)
Then set this equal to hbar/lifetime