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High Energy, Nuclear, Particle Physics

- Properties, relationships, and interactions of subatomic particles. Exp. & theo. physics of nuclei & elementary particles
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Jan16-12 Greg Bernhardt
rules Sticky Thread Pinned: Forum Rules
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Feb23-13 08:41 AM
1 25,923
God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...
Jul18-14 12:32 PM
187 62,467
I meant to title it "Neutrons packed together" Since neutrons can be packed together in a neutron star, would it be...
Apr24-09 03:00 AM
5 1,776
Is it possible that particle physics is over complicating theories about why all the matter in the early universe...
Apr14-09 12:30 PM
Bob S
8 2,060
with this technique that has been used to detect quarks, are the results reproducable every time? or are there...
Apr16-09 11:29 AM
Bob S
5 1,364
I wasnt quite sure where to put this thread. This question occurred to me while I was looking at the group theory of...
Apr9-09 09:27 AM
8 1,672
Is there any deep reason for introducing the electromagnetic field tensor other than the fact that Maxwell's equations...
Apr14-09 03:41 PM
Hans de Vries
7 2,826
Im looking for a good resource that clearly explains the problem of Gribov ambiguity. In particular, I want to know...
Apr14-09 07:56 PM
4 2,055
Is there a meaning to spin of particles if it was a (1+2)D rather than (1+3)D ?
Apr16-09 04:19 PM
3 1,424
There doesnt seem to be anything in the theory of the standard model that says such a baryon couldnt exist, so why...
Apr9-09 09:33 AM
3 1,096
For scalar fields the propagator is just a number that represents the amplitude for a particle to go from one space...
Apr11-09 05:28 AM
Hans de Vries
11 1,616
Kaluza Klein in 8 dimensions with the 4 dimensional compact space being the homogeneous space H=SU(3)/SU(2)xU(1), so...
Apr13-09 10:46 AM
3 1,274
Hi everybody, Basically, the title of this thread says it all. My question is: Since all particles have an...
Apr11-09 12:37 PM
6 5,788
How can a photon exist if it has no mass? I've always found this concept hard to grasp. (Rhyming not intended)
Apr13-09 09:51 AM
4 1,084
I apologise if this question has been asked before, but I coudlnt find it, so: Is there some deeper reason for...
Apr15-09 10:49 AM
26 3,443
Could someone please explain what a multiplet is? I know that this has to do with the representation theory of Lie...
Apr15-09 06:02 PM
3 2,501
Hey everyone, Okay so usually drell-yan is shown as interaction of p + p^bar: quark + antiquark -> virtual photon...
Apr19-09 03:23 PM
2 2,037
Considering the Atlas experiment, which are the basic theoretical decisions someone must take in order to create an...
Apr15-09 02:54 PM
Vanadium 50
6 2,404
To prove: F \overline{} \mu\nu = \nabla \overline{} \muA \overline{} \nu - \nabla \overline{} \nuA \overline{} \mu...
Apr16-09 08:08 AM
1 1,394
I have been doing an experiment on muon lifetime, and am wondering if my count rate is correct. A little about the...
Apr20-09 08:39 PM
Bob S
10 3,314
If you have a spin system where integrating out spins leads to new interactions ie proliferation, what happens if you...
Apr25-09 01:57 AM
17 5,531
Hi, I have a simple question related with asymptotic freedom. Quarks behave as free particles at small distance...
Apr20-09 01:12 PM
4 1,773
I have questions about the infinitesimal Lorentz transformation. but specifically about index manipulations. ...
Apr20-09 01:36 AM
4 3,629
I need blibiography of analysis of the spectrum I read in B. Green pp 113, but I no understand.
Apr20-09 01:41 AM
1 1,456
I need find polynomials of scattering of 2 spinless particles. in a dual model the invariant amplitude. I need find...
Apr18-09 08:57 AM
0 988
what are the reasons for why its believed that a smaller wave can have a higher ammount of energy? it seems...
Apr19-09 01:08 AM
0 1,067
Hey, I am a complete noob to the particle physics realm and I am writing a paper on the Higgs Boson and Higgs field. ...
Apr21-09 10:04 PM
0 882
If the generators of the Lorentz spinor transformation can be expressed in terms of the gamma matrices (which can be...
Apr24-09 06:10 PM
11 3,962
Neutrinos are almost massless, travel close to the speed of light, and pass through matter almost undisturbed. ...
Apr24-09 12:11 AM
16 3,302
independently these two points make sense but when you put them together it seems as if they should be consistent:...
Apr24-09 06:00 PM
4 1,683
I want know if have a procedure aesy of deduced the kinematic factor. I know the procedure of M.B. Green pp 420, but...
Apr24-09 12:12 AM
1 1,231
Trying to study Beta-decay, but can't seem to be able to tell the difference between the two. Can someone help? ...
Apr28-09 06:50 PM
6 5,746
Hi, I have a question about this decay: \pi^- \rightarrow e^- \overline{\nu_e} there is a factor: 1 -...
Apr26-09 03:09 PM
2 1,752
anyone know what research is being done in CP symmetry violations and Matter Antimatter Asymmetry currently?
Apr27-09 04:04 PM
5 2,014
Has anybody heard of this? Apparently, extremely high-frequency and high-intensity light can knock out electrons in...
Apr25-09 01:08 AM
0 1,012
Is there a collection somewhere of particle interaction descriptions? For example, if I'm wondering what an...
Apr27-09 05:00 AM
2 1,132
when do high energy photons become a paritcle/antiparticle pair?
May1-09 03:47 PM
12 2,475
Hey I'm new to this forum, just want to say hi! I'm not sure if this is the rite place to put this but sry if i posted...
Apr26-09 08:01 PM
6 1,782
(1)How does the nuclear reaction in a power plant differ, from the the one that occurs in a nuclear bomb? (2)I...
Apr27-09 01:15 AM
1 1,497
I'm trying to clarify the terms "nuclear effect" and "atomic effect". Due to the synonymous use of nuclear and...
May2-09 09:15 PM
3 4,462
This is probably a naive question, but I've been trying for awhile to figure it out myself and just don't have the...
May1-09 09:56 PM
6 2,321
I have been invited to write a proposal for researching this: >> The basic idea is to calculate, in first...
May2-09 12:42 AM
1 1,334

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