Modern Physics
Modern Physics
3rd Edition
ISBN: 9781111794378
Author: Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher: Cengage Learning
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Chapter 5, Problem 26P
To determine

The life time for the full width at half maximum of the mass measurement distribution.

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The neutral pion nº is an unstable subatomic particle with a mass of 135.0 MeV/c² and a lifetime of about 8.4 x 10-17 s. What is the uncertainty of the energy of the nº in its ground state? What is the relative uncertainty Am/m of its mass?
The average lifetime of a tau is about 2.9 ✕ 10−13 s. Estimate the minimum uncertainty in the energy of a tau. J
A π0 meson is an unstable particle produced in high-energy particle collisions. Its rest energy is approximately 135 MeV, and it exists for a lifetime of only 8.70 × 10-17 s before decaying into two gamma rays. Using the uncertainty principle, estimate the fractional uncertainty Δm/m in its mass determination.
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