Muons µ

By John and Nicole

~Waterloo

Definition of a Muon

Muon- an elementary particle with a mass about 200 times that of an electron. It is a lepton (quark) with a negative charge and has a half-life of two-millionths of a second.

Characteristics

Mass~ 0.106GeV/c²Charge~ negative

Life-time~ 0.000002 sec.

Discovery

In 1961, Leon Max Lederman, Melvin Schwartz, and Jack Steinberger made the

discovery of muons as a result of an experiment with a high-energy neutrino

beam.

How a muon decaysp=0.7518 ± 0.0026η= -0.007± 0.013δ= 0.749 ± 0.004

εΡμ= 1.003 ± 0.008(c0

εΡμδ/ρ 0.99682, CL = 90% (c)

ε’ = 1.00 ± 0.04ε”= 0.7 ±0.4

a/A = (0± 4) x 10-³a’/A = (0± 4) x 10-³β/A = (4 ± 6) x 10-³β’/A = (2 ± 6) x 10-³

ή = 0.02 ± 0.08Almost all the time it ends as an electron e¯VeVμ

Conclusion

Definition of a muonCharacteristics of a muon

The DiscoveryHow a muon decays