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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 21,057
God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...
Jul11-12 01:13 AM
178 34,439
How do protons and neutrons behave in nucleus? Is they just sit where? Or move some how? or maybe jei form some form...
Jun29-09 05:01 AM
1 722
I'm having some slight confusion over what seems to be a violation of conservation of mass: Both electrons and...
Apr27-13 10:01 AM
2 723
If two protons collide at the LHC and a quark from each undergo a weak interaction together to form a W/Z boson, then...
Jan9-13 07:20 PM
Vanadium 50
3 724
Sep22-10 01:53 PM
1 725
Q.) What would happen if a *reverse-Tokamak* was created, thus reversing the electromagnets to a negative charge and...
Jan14-11 02:14 PM
1 725
Hi all I found these equalities from Gordon Brown (1963). He uses the killing form to measure the length of the...
Apr12-12 10:53 AM
0 725
I have to write some training on the following and I really have no idea. Is this correct? Any help is greatly...
Feb3-14 06:15 AM
3 726
Hi, Radioactive materials will decay to datughter products. in the mean process they emit alpha or beta...
Jan25-11 05:05 AM
2 727
What is the equation of strong and weak force? & how to combine it mathematically?
Mar14-13 10:45 AM
1 727
Do you think it would be possible to use a beam of neutrinos to probe the structure of atomic nuclei? Since they do...
May1-13 02:24 PM
6 728
A proton and neutron "at rest" may stick to each other forming a deuterium and releasing some 2.2 MeV energy but what...
Jan13-11 09:02 AM
1 729
Is anyone here familiar (more or less) with the new type of telescope called IACT, Imaging Air Cherenkov Telescope. ...
Sep16-09 12:59 AM
Vanadium 50
1 730
At high energies electromagnetic force and weak force merge in one force. There is difference between strength of EM...
Oct26-10 02:26 PM
0 730
Greetings, I think this will be a very quick thread. I am new to using Feynman diagrams, and have run into...
Oct13-13 08:06 AM
2 730
Consider the usual phi^4 theory, when we derive the Lehmann-Kallen representation of the propagator, by inserting a...
Oct5-10 07:08 PM
0 731
Hey, I've been reading a bit in the QFT book by Pierre Ramond about loops and i stumbled about some derivations in...
Jan27-11 01:35 PM
2 731
I was on Youtube the other day and found a series of videos that explain the four fundamental forces in terms of a...
Jul10-12 11:31 AM
7 731
In my class notes, the muon decay width is: \Gamma_\mu=\frac{G^2_F m^5_\mu}{192\pi^3} Yet, in Wikipedia (take...
Nov26-13 05:51 AM
5 731
from what I understand, the higgs boson is basically a wave in the higgs field. I understand that they have a lot of...
Jan24-14 03:54 PM
12 731
Can anyone walk me through this calculation? I'm not completely sure how to do it (merely a student). So is this...
Nov22-09 04:48 AM
Vanadium 50
1 732
Is there some rumour about experimental measurements of decays into two photos that I have missed?
Oct17-10 11:18 AM
Meir Achuz
1 732
Wondering if anyone has developed a scaling heuristic for the relationship between size of accelerator and smallest...
Mar28-13 08:47 AM
1 732
I'm taking high school physics, and I've had problems in the past with flat out errors in my textbook (I've brought...
Jan13-14 12:51 PM
4 732
how to solve this equation using mesh point method? and what is the mesh point?
Nov18-10 06:10 AM
1 733
Professor Susskind describes the Dirac Sea. He says remove a negative energy electron, and replace it with a positive...
Mar13-13 11:52 AM
2 733
On decays I have only a preliminary understanding. I was looking up the half life of a neutron for another reason. ...
Jan20-13 01:02 PM
2 734
Hi! According to E=mc^2, we have the phenomena mass defect. For example, when we put a proton and neutron together,...
Mar10-13 01:39 AM
4 734
What is the Higgs particle and what does it do for us? How will LHC detect it? What is the signature? Thanks.
Mar29-10 09:57 PM
3 736
The Polyakov action has three symmetries, namely; Poincare, reparametrization and Weyl. Using the reparametrization...
May19-11 12:44 PM
Cesar Damian
0 736
As is shown in the website is the...
May10-13 06:18 PM
Vanadium 50
3 737
One point about Wick rotation is puzzling me and I can not find explanations in books. It concerns the invariants...
Nov3-12 04:18 PM
0 737
I am learning QFT from Srednicki's book. However, in Figure 9.2 Srednicki has given all connected diagrams with E=0...
Jun11-13 04:38 PM
3 737
When it is given that the interacting energy between 2 ions in a crystal is U, is the binding energy W(for 1 atom)...
Mar10-11 07:52 AM
0 738
A paper I am reading saysMy question is, "What does this mean?" The paper deals with WIMP annihilations into a photon...
Jun18-12 02:28 PM
1 738
After all, high energy neutrino astronomy seems to have been born! Ice Cube reported yesterday the measurement of 28...
May15-13 07:13 PM
0 738
Hello, Empirically, the flux distribution of cosmic ray muons follow cos^2(θ) where θ is angle of incidence....
Nov30-13 02:24 PM
4 739
I understand that when the quark theory was being developed that SU(3) was used to explain the mesons that were...
Jan5-14 06:33 PM
8 739
In the nuclei Shell Model I understand the nomenclature for the shell sequence but I donít know how to calculate the...
Nov6-08 01:55 PM
1 740
I was told by a professor (I am assuming he was right) that organisms prefer lighter isotopes. So if a tree is in an...
Apr4-13 12:01 PM
1 741
We say on-shell and off-shell mass of quarks. 1) What is the difference on-shell and off-shell mass of quarks. 2) At...
Jan1-14 06:54 PM
Vanadium 50
7 741

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