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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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Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Feb23-13 08:41 AM
1 21,114
God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...
Jul11-12 01:13 AM
178 34,667
I'm trying to derive the lie algebra for the conformal symmetry group and was curious if anyone could help? I'll go...
Aug23-09 07:27 AM
Jim Kata
4 1,500
The following is on CERN's website:
Aug14-09 12:08 PM
10 1,729
the idea is let us supppose we have a well behaved theory where only logarithmic divergences of the form ...
Aug15-09 11:31 AM
1 759
For neutron we all know, it has the 15 minutes of fame before it decays, what is the theoretical bound on proton's...
Aug25-09 12:54 PM
Vanadium 50
15 1,871
Conceptually, how does one calculate hadron scattering processes from the strong force, if one has the amplitudes for...
Aug13-09 11:32 PM
6 2,188
Almost: the result is 85 GeV, the measured mass is 80.4 GeV. Is there anybody who has ever looked at this...
Aug14-09 01:52 AM
Vanadium 50
3 1,484
According to Steven Weinberg ('The quantum theory of fields', vol.1), the principle of gauge invariance stems from the...
Sep3-09 06:57 AM
15 3,226
Hi everybody, I don't know if this is the right section to ask for such a question but I have been dealing with this...
Aug24-09 05:34 AM
9 2,150
I am reading wikipedia term"dineutron" but i can not understand this sentence in red. ...
Aug16-09 12:17 AM
Vanadium 50
3 2,503
The masses of the elementary particles are renormalized somewhat, when the energy (the momentum) increases. Assuming...
Aug19-09 02:25 PM
3 1,092
I understand that when , say, several protons and neutron come together to from a nucleus they loose some mass and...
Aug17-09 05:15 AM
1 1,097
Dear Experimental Particle Physicist, I have a simple question on how to calculate the Acc value from a MC dataset....
Aug15-09 12:55 PM
8 1,245
If you fire energetic ionising particles, like electrons or protons, at a stationary target, the important...
Aug28-09 06:56 AM
2 1,252
When I look at a nuclear level scheme, there are many gamma ray transitions from energy levels of say, spin 4 to spin...
Aug19-09 02:59 PM
Vanadium 50
1 1,039
I'm having a little trouble recreating some things from a paper and it is due to my lack of knowledge of working with...
Aug24-09 01:21 AM
2 1,098
Aug21-09 12:12 PM
17 2,809
While deriving Einstein's energy mass relation , we observe that E2 = m2 x c4 but by taking square roots of both...
Aug20-09 12:14 PM
0 796
Does any body know how quarks are formed? and why they always in fraction numbers like 1/3, 2/3. Since charge are...
Aug22-09 12:10 PM
2 1,056
Hello, I have one question. The most probability annihilation is e+ + e- -> y + y with spins -1/2+1/2=-1+1. But I...
Aug22-09 02:50 PM
Bob S
2 1,510
If you combined these elements does it decrease the nuclear fusion reaction because of the fission or do i have this...
Aug25-09 09:11 AM
Bob S
6 1,204
I understand why Fusion releases energy.. The product is "lighter" than the reactions and the missing mass is...
Aug31-09 11:30 PM
8 3,490
I watched some interesting videos on the Large Hadron Collider (LHC) and it raised a whole ton of questions. If my...
Sep2-09 11:34 AM
4 2,365
Hello PF members, I curious to know some basic idea..why the line shape of nuclear decay is displayed as a...
Aug25-09 04:17 PM
2 1,077
I would like some tips about what book I should read if I want to properly understand the relation between local...
Aug27-09 06:01 AM
George Jones
2 1,390
Having discovered up, down, strange, charm and bottom quarks, why did scientists undertake similar experiments using...
Aug26-09 05:57 PM
2 1,197
I have so far learned that nuclear forces are strongest forces acting at short ranges. But how do they behave at a...
Aug27-09 10:59 AM
0 778
Hi I'm trying to understand very basic aspects of the WZW model, and would appreciate any help. The main thing i...
Aug27-09 02:34 PM
Jim Kata
0 781
Hi, Could someone tell me please what is the scientific consensus(or some interesting theories) on why do muons...
Aug28-09 03:05 PM
8 1,908
I have worked out the total spin for the elements up to Neon however I hit a snag with Nitrogen and Fluorine. The...
Sep4-09 09:59 PM
1 898
I have a question about the nature of matter on earth, the most stable form of hadrons which exist on earth are made...
Sep1-09 12:43 AM
Vanadium 50
1 904
Hello: The gauge symmetry of the standard model is written in authoritative places like wikipedia :-) as...
Sep3-09 07:14 PM
5 2,101
Suppose I want to find the minimum velocity of the electron and positron required to make a Z boson during...
Sep4-09 05:25 PM
2 1,378
Can nuclear weapons explosion produce "neutrino pluse"?
Sep9-09 07:08 AM
9 2,268
I'm curious as to whether parameters like rest mass and mixing angles, half-life for 2nd/3rd gen and other properties...
Sep11-09 12:16 AM
3 933
1-Half life is the time it takes for half of the nuclei in a sample of radioactive material to decay(Am I right?). Why...
Sep11-09 06:13 AM
8 2,070
I was wondering if we could create a device that could interact with neutrinos and extract their energy to some...
Sep10-09 04:34 AM
4 3,565
Hi, everyone! There was a recent paper arXiv:0807.4454v2 where authors present a revised version of Paris...
Sep10-09 04:33 AM
0 933
When writing a reactivity in dollars, what is the proper notation? Would it be 0.43$ or $0.43? or is it just 0.43?...
Sep10-09 03:20 PM
1 2,985
Can someone please clarify beta decay for me. As I understand it, in B- decay, a neutron turns into a proton,...
Sep11-09 01:41 PM
5 2,703
I have been learning particle physics lately but it's been mostly from a theoretical perspective and not a...
Sep11-09 07:01 AM
1 8,686

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