Undesignated
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#1
Report Thread starter 1 year ago
#1
'A muon is an unstable particle.
State the names of the particles that are produced when a muon decays.'
The ms says that it decays into an electron, electron antineutrino, and a muon neutrino. But I'm not too sure why, could someone explain this to me?
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username4407536
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#2
Report 1 year ago
#2
http://www.princeton.edu/~romalis/PH...n_lifetime.pdf
https://en.wikipedia.org/wiki/Muon

Hello, the decay is like that, due to conservation of ..., ... and ...
Spoiler:
Show
Spoiler:
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lepton number,

Spoiler:
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charge

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and mass-energy




(Not allowed to post answer, so try to think about it, then look at spoiler.
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Undesignated
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#3
Report Thread starter 1 year ago
#3
(Original post by golgiapparatus31)
http://www.princeton.edu/~romalis/PH...n_lifetime.pdf
https://en.wikipedia.org/wiki/Muon

Hello, the decay is like that, due to conservation of ..., ... and ...
Spoiler:
Show
Spoiler:
Show
lepton number,

Spoiler:
Show
charge

Spoiler:
Show
and mass-energy




(Not allowed to post answer, so try to think about it, then look at spoiler.
Hi, thanks for the reply. I get that lepton number, charge and mass/energy have to be conserved, but couldn't the muon simply decay into the electron by itself then? Since lepton number and charge would be conserved and the remaining mass-energy could be converted into kinetic energy. Are there perhaps different types of lepton numbers that need to be conserved?
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username4407536
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#4
Report 1 year ago
#4
(Original post by Undesignated)
Hi, thanks for the reply. I get that lepton number, charge and mass/energy have to be conserved, but couldn't the muon simply decay into the electron by itself then? Since lepton number and charge would be conserved and the remaining mass-energy could be converted into kinetic energy. Are there perhaps different types of lepton numbers that need to be conserved?
Yeah, there are different types of lepton numbers that need to be conserved
https://en.wikipedia.org/wiki/Lepton_number (see Lepton flavour conservation)
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Sinnoh
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#5
Report 1 year ago
#5
(Original post by Undesignated)
Hi, thanks for the reply. I get that lepton number, charge and mass/energy have to be conserved, but couldn't the muon simply decay into the electron by itself then? Since lepton number and charge would be conserved and the remaining mass-energy could be converted into kinetic energy. Are there perhaps different types of lepton numbers that need to be conserved?
Wiki page says μ− → e− (plus gamma rays) isn't forbidden, but incredibly unlikely ( like 1 in 10^50)
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Undesignated
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#6
Report Thread starter 1 year ago
#6
(Original post by golgiapparatus31)
Yeah, there are different types of lepton numbers that need to be conserved
https://en.wikipedia.org/wiki/Lepton_number (see Lepton flavour conservation)
Ah alright thanks.
Last edited by Undesignated; 1 year ago
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Undesignated
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#7
Report Thread starter 1 year ago
#7
(Original post by Sinnoh)
Wiki page says μ− → e− (plus gamma rays) isn't forbidden, but incredibly unlikely ( like 1 in 10^50)
Oh I must've missed that. Thanks for the clarification.
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