Questions tagged [leptons]
Leptons are elementary fermions that do not experience the strong interaction: electrons, muons, tauons, and neutrinos.
183
questions
3
votes
0
answers
46
views
Is there a sigma for unexplained hypothetical discoveries?
I recently read that the Koide formula relating electronic leptons rest masses is often considered to be numerologic, since unexplained, even though recent years experiment data tend to narrow the ...
2
votes
1
answer
68
views
How does a $\mu_R^-/\mu_L^+$ decay?
While studying SM, I was taught that weak force bosons $V=\{W^\pm,Z^0\}$ do not interact with right/left-chiral fermions/antifermions. For this reason, we cannot observe right-handed neutrinos (if ...
- 557
3
votes
1
answer
285
views
How to be sure that when a muon passes a detector it is actually a muon?
The question is as follows: when you have any kind of detector for muons you just take measurements and you say, for example, the number for the muon flux but how you're sure that all particles ...
0
votes
2
answers
48
views
Can Muon Catalyzed Fusion work in a Plasma?
From what I understand, muon catalyzed fusion works by injecting muons into the deuterium and tritium, which then they replace the electron shared between the hydrogen isotopes in a molecule, making ...
- 43
3
votes
2
answers
46
views
Would a muon placed in a confinement smaller than most electron wavelengths decay slower?
We know that between two perfect mirrors certain photon frequencies become disallowed.
The casimir effect is often even described as a lack of virtual photons of certain frequencies within quantum ...
- 69
2
votes
0
answers
35
views
General formula for a $f1\to f2$ gamma processes (e.g. $\mu \longrightarrow e\gamma$), understanding the detailed calculation in the paper by Lavoura
I want to work out in detail the paper by Lavoura to get some real practice as a beginning student. I have stumbled upon several problems as I am moving along with the arguments. Firstly, I am not yet ...
- 31
0
votes
0
answers
29
views
What does it mean, during the Grand Unified Epoch, that matter fluctuated between lepton and baryon states?
My understanding of leptons and baryons is that leptons are an elementary particle, while baryons are a composite particle. Can someone explain to me what particles fluctuating between lepton and ...
- 325
0
votes
0
answers
39
views
Within a generation, fermion species' mass seems like it could have an effect on how many of the fundamental forces it interacts with. Is this true?
So, fermions all interact with the gravitational force and the weak force. All fermion species.
Now, if you eliminate from that list, the particles that don't interact with electromagnetism, you ...
- 325
1
vote
1
answer
96
views
How was the tau lepton predicted?
I know the tau lepton has been predicted before it was discovered – unlike the muon. But how does our theory (SM/electroweak theory) predict the existence of a third lepton generation?
- 11
3
votes
1
answer
82
views
Would it be possible to generate muons using neutrinos and electrons?
The decay products for a muon are an electron, a muon neutrino, and a electron antineutrino. As the decay products for a neutron (electron, proton, neutrino) can combine together to form a neutron ...
0
votes
0
answers
63
views
Are quarks real particles? Or only combination form of leptons inside nucleons? [duplicate]
There are not any free and independent quark in the nature. Collision of many particles inside most powerful accelerators could not produced any free and independent quark but result of collision ...
- 21
0
votes
0
answers
27
views
Notation of small $n$ in the production of muons in cosmic rays
I came across this page in the "Cosmic rays and particle physics" by Gaisser. I cannot find any explanation to the notation of $n$ (eqn. 6.8 and forward). Intuitively it should be something ...
- 33
2
votes
2
answers
81
views
Can exchange interaction exist between electron and muon? [closed]
I'm studying about the exchange interaction and it's quite confusing.
Why does it happens between same kinds of particle?
How about electron and muon? Or one particle and another one which has all the ...
- 57
7
votes
5
answers
2k
views
What happens when an anti-electron collides with a neutrino?
What happens when an anti-electron collides with a neutrino? If something does happen, is a photon released after the collision?
- 81
0
votes
1
answer
133
views
How would I estimate the partial width for the decay of upsilon meson into an electron-positron pair?
I cam across a question that stated the total decay width for the phi meson was 4300 kev and the partial decay of it into an electron-positron pair was 1.3kev. How would I estimate the partial width ...
- 39