The particles tag has no wiki summary.
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Higgs boson and quasiparticles
Do we know exactly the difference between particles and quasiparticles? Is Higgs boson a particle or a quasiparticle? I ask this because if I understood well, Higgs boson created by a spontaneaous ...
0
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2answers
201 views
How can particles being closed strings in String Theory create solidity in objects?
I understand how particles with certain masses can form to make atoms, which create solidity in objects due to Pauli's Exclusion Principle and what have you. These particles actually have mass and to ...
2
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1answer
170 views
A question regarding particle trajectories in the symplectic manifold formalism
How to solve a free particle on a 2-sphere using symplectic manifold formalism of classical mechanics ?
Is there a way to get coriolis effect directly, without going into Newton mechanics?
And is ...
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0answers
187 views
what interactions would take place between a free proton and a dipolariton?
What interactions can be expected to take place between a free proton and a dipolariton, (a) at high energies and (b) at lower energies?
A dipolariton is a bosonic quasi-particle mentioned in a ...
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4answers
410 views
Questions on wave-particle duality
Wave-particle duality states that a particle has both wave properties and particle properties when one is not observing it.
1) What is an observer? Need it be anything living or can other particles ...
2
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2answers
138 views
How the nucleon structure has been identified experimentally?
It is known that nucleons (proton, neutron) are composed of partons (quarks, etc.). How was this identified experimentally? In particular, how it has been identified that nucleons comprise of more ...
1
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1answer
155 views
Stability of neutron [duplicate]
Possible Duplicate:
How come neutrons in a nucleus don't decay?
It is known that free neutron decays in 15 minutes on average. Why is it much more stable when "placed" in nuclei?
Edit: ...
7
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1answer
270 views
why is there no ninth gluon?
A teacher of mine told me once that there were no ninth gluon because such a one should be white and interact infinitely far, and no one has been observed. Is there also a theoretical reason?
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2answers
146 views
Speed Distribution of The Particles
I want to know the distribution of the particles's speed.
The particles what I mean are nucleons and electrons of element.
Consume there is 1kg of iron on room temperature and it's shape is sphere.
...
3
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3answers
620 views
What is lepton number?
What exactly is a lepton number of a particle? With the charge (eg proton is just 1, not the exact charge), I can understand because it's a physical property, put a particle with charge + next to ...
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0answers
42 views
What sources can you recommend to understand the basics of the Coulomb interaction of particles [closed]
Maybe it's not the best place for this issue yet.
I am in graduate school. Field of knowledge of my supervisor - quantum physics - or rather, he examines the interaction of particles. Sources which ...
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0answers
28 views
GUT predictions for charm mass?
Most GUT models have some relationship between down-type quarks and leptons, that more or less agree with the observed values after running the renormalization equations. But, what about up-type ...
3
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4answers
163 views
is the Z boson one entity or are there as many entities as decay pairs, but they are equivalent and lumped together
just wondering if it is a distinction without a difference - it seeming a bit weird that one thing can decay into different things.
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2answers
798 views
Why does Davisson-Germer experiment confirm electron's wave-particle duality?
First I apologize if my question is trivial and for my poor English.
I was wondering why my teacher states that "electron's wave-particle duality is verified if we observe diffraction of the electron ...
4
votes
1answer
361 views
Does the speed of sand flow in a hourglass depend on a height of a sand column above the hourglass neck?
In a hourglass, does the sand flow through the neck depend on the amount of sand in the upper glass? If we consider a sand flow analogous to fluid flow, then it should depend linearly, but in that ...
8
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1answer
2k views
Standard Deviation in Particle Physics
I'm familiar with sigma, and how its usually calculated and used, but would like to know how it's applied to particle physics. I recall reading that the discovery of the Higgs would only be credible ...
4
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2answers
342 views
What is the “shape” of atomic/subatomic particles?
I apologize in advance for my ignorance if this is a question with an obvious answer... I am not experienced in this field. But are such particles in the universe points with a charge, or are they ...
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2answers
93 views
What is a proton-rich atom?
http://wiki.chemprime.chemeddl.org/images/e/e4/Plot_of_Neutron_Number_vs._Proton_Number_.jpg
The above graph shows that all elements have more neutrons than protons in this nucleus. So how is there ...
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1answer
207 views
Transition of Electric Charge In Collision Between Proton And Antiproton
I know that
$$p+\bar{p}\to 4\pi^++4\pi^-+(\gamma)$$
Before the collision, the sum of absolute electric charge value is $2$.
$$\left | +1 \right |+\left | -1 \right |=2$$
After the collision, the ...
10
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2answers
744 views
How Did Paul Dirac Predict The Existence of Antiproton?
The existence of the antiproton with -1 electric charge, opposite to the +1 electric charge of the proton, was predicted by Paul Dirac in his 1933 Nobel Prize lecture.
Quotation by Wikipedia.
...
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0answers
60 views
How to display particles [closed]
Not exactly physics question but physicist must have encountered this problem before.
In my code I generate a table of six tab separated columns (x,y,z,type,charge,id). I want to create a 3d ...
10
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1answer
2k views
Phase shifts in scattering theory
I have been studying scattering theory in Sakurai's quantum mechanics. The phase shift in scattering theory has been a major conceptual and computational stumbling block for me.
How (if at all) does ...
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3answers
317 views
Is there Bremsstrahlung radiation for a charged massless particle?
This is a follow up question from: Massless charged particles
Since by definition such a particle would interact with photons- resulting in some change in momentum- would the particle emit ...
6
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3answers
257 views
References on the non-compositeness of the known elementary particles
What paper(s) or theory(s) describe or prove that the elementary particles that we have determined today cannot be made up of smaller more fundamental particles?
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1answer
729 views
Why does lambda decay violate parity?
When a lambda particle decays into proton and a pion, I am told it does not conserve parity. Why?
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2answers
2k views
How do alpha and beta particles ionise surrounding particles?
I've been wondering about this question for a while. If you have alpha and beta particles released from a radioactive core, how do they ionise surrounding particles?
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1answer
305 views
Unusual particle effects at CERN
In 2010 there were press reports that CERN had identified unusual properties in particle behavour in collisions. One link here.
Here is a partial quote:
"In some sense, it's like the particles talk ...
3
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3answers
942 views
are particles “knots” or “kinks” of excitation in a field?
this is my mental picture for how they travel without a medium, how (like water waves) some can't stay still, why they have wave and particle properties, energy/mass equivalence, conservation, etc. ...
