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Chapter 6: Q28E (page 1520)

What is the total kinetic energy of the decay products when an upsilon particle at rest decays toτ++τ- ?

Short Answer

Expert verified

The total kinetic energy of the decay products when an upsilon particle at rest decays to τ++τ- is 5906 MeV.

Step by step solution

01

Define Rest energy

The energy that is equal to the rest mass times the square of the speed of light is known as rest energy.

02

Given data

The table shows the rest mass of the particles.

03

Determine the kinetic energy

By the principle of energy conservation:

K=Eγ-Eτ++Eτ0

Substitute the values:

K=9460-1777+1777=5906MeV

Hence, the total kinetic energy of the decay products when an upsilon particle at rest decays to τ++τ-is 5906 MeV.

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