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Physics

Questions tagged [particle-physics]

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Particle physics is the study of the fundamental forces of nature as they are embodied in the interactions of elementary and composite particles at high energies and short time and distance scales. DO NOT USE THIS TAG for point particles in classical mechanics.

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9votes
2answers
624views

I am a highly interested layperson in Germany focusing on the fundamental principles that govern our everyday reality.I have a specific question regarding the permanence of the basic forces of ...
-4votes
0answers
58views

A nucleon is made up of a sea of quarks and gluons that pop in and out of existence. Color charged gluons move at $c$ and thus make up 99% of the mass of the atom. Where does this charge and kinetic ...
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1answer
195views

I understand that solar panels generate electricity by converting photons from sunlight. This made me wonder whether it would be possible to use other types of cosmic radiation, such as muons, to ...
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0answers
54views

I have been studying the Higgs mechanism, and most standard derivations assume flat Minkowski spacetime.However, in the early universe or near compact objects such as black holes, spacetime curvature ...
1vote
1answer
125views

This is a sequel of my question. For particles with structure, it wouldn’t be strange for them to decay due to unstable structure and various reasons. But for leptons, such as the muon, it's almost ...
0votes
0answers
90views

Is it possible for the Mandelstam variable $t$ to reach positive values ​​in the quasielastic charged current neutrino-neutron scattering?:$$\nu_{\mu} + n \rightarrow \mu^- + p$$(don't assume that ...
3votes
1answer
129views

I've heard about neutrino oscillation, where can neutrino can change between each flavour. I've also heard that the neutrino flavours are not guaranteed to have the same mass. If this is the case how ...
3votes
1answer
122views

After the discovery of Higgs boson at LHC, multiple lepton colliders like FCC-ee, ILC, CLIC, and muon colliders were proposed. These colliders can produce Higgs bosons under very clean backgrounds to ...
2votes
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50views

I am doing calculations with a resonance with the invariant mass $W$, which can decay to $a + b$ with masses $m_a$ and $m_b$. Since I treat all particles as scalar, I calculate with $\ell=0$. The ...
1vote
1answer
94views

I have 2 confusions about this binding energy graph for atomsI keep on reading that fusing nucleons up until Fe-56 doesn’t cost energy and only releases binding energy. However, I understood that ...
-1votes
1answer
88views

Could an extremely high velocity particle produce Cherenkov radiation in a near vacuum?e.g. Interplanetary space?What if the particle was Oh my God particle have produced Cherenkov radiation while ...
2votes
1answer
220views

For a non-spinning (Schwarzschild) black hole:The event horizon (Schwarzschild radius) is at:$$r = \frac{2GM}{c^2}$$Inside this radius, not even light can escape.Outside that, there is the ...
10votes
1answer
138views

Neutrinos are unique in particle physics as their flavor eigenstates don’t coincide with their mass eigenstates. Most processes like beta decay emit neutrinos in their flavor eigenstates. So I am ...
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0answers
68views

Could you tell me which of these three is closest to the truth?A green up quark will annihilate any anti-quark.A green up quark will only annihilate an anti-green anti-quark.Color charge shifts ...
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Apologies if this is a naive question. I'm really fascinated by Group Theory, but I still feel quite ignorant about the subject.I've come across statements like:"Elementary particles are ...

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