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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
God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...
Jul18-14 12:32 PM
187 62,155
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 25,851
I am trying to understand the concept of anomalies and the global or gauge symmetry breaking, i.e. the Lepton and...
Dec9-13 12:45 PM
0 1,033
Hi all, I'd like to know what if we have a scatteing process A+B > C > E+D, what is the relation between the width...
Dec9-13 12:43 PM
4 1,072
I'm working on an open-source textbook on special relativity. The text below is what I currently have on experimental...
Dec8-13 09:00 PM
10 1,429
in a nutshell
Dec7-13 09:29 AM
5 2,478
There are something I don't get about the degrees of freedom(dof). For massive dirac spinor, there are four complex...
Dec6-13 03:06 PM
6 1,378
I am having some difficulties in understanding something I found. Speaking about CKM matrix for N quark generations......
Dec6-13 09:26 AM
12 1,318
Hi all, Could any one help for calculating the hadronc production cross section for example for tree level : p p >...
Dec6-13 09:13 AM
1 1,063
After playing around with possible charges for new fermionic fields, I came to the conclusion that ONLY the U(1) gauge...
Dec5-13 09:43 PM
15 1,150
I heard from a few sources that the Higgs Boson particle probably doesn't exist, is this true? If so, what does...
Dec4-13 10:03 PM
7 1,194
I am confused on an issue relating to gluons and mass. As I understand it, quarks don't actually have a lot of rest...
Dec4-13 11:56 AM
30 2,189
Hello, I have read that above a certain temperature, the weak bosons become massless and become indistinguishable...
Dec3-13 02:22 PM
9 1,079
I was playing around with a classical field treatment of the SM, and I came across something strange I was hoping...
Dec3-13 01:09 PM
6 837
Hi all, I'd like to know what is the integrated luminosity of CMS exp. Cern ? Best, S.
Dec3-13 12:39 PM
5 833
I was wondering if there are any theories that show how much mass the higgs field gives to each particle and why? I...
Dec3-13 03:47 AM
2 878
What is best way to figure out which of these activation coils would yield a higher gamma flux: 27Al, 58Ni, and...
Dec2-13 01:27 PM
1 653
Hi all, Having looked into the Higgs mechanism a bit (I am a physics undergrad, so my understanding is pretty basic...
Dec2-13 11:54 AM
6 858
Hi every one, This time i am studying Quantum field theory and some times we call also high energy physics. But when...
Dec2-13 07:41 AM
2 783
Hi people, I've read some articles about the calculation of mass spectrum. But I'm not clear with this concept. Can...
Dec2-13 07:32 AM
13 1,143
can anyone explain me about the differences between color and strong force?Though there are four fundamental forces so...
Dec2-13 03:30 AM
4 865
Hi everyone, I am doing a final project on the title " fundamentals of neutrino physics". I wanted to raise some...
Dec1-13 04:36 PM
4 699
Can the classical electromagnetic force between two arbitrarily moving electrons, described by the Lienard-Wiechert EM...
Dec1-13 03:38 PM
1 725
I'm currently doing some research at the moment for my professor, and he gave me a list of things to look at. Before...
Dec1-13 01:11 AM
Simon Bridge
3 592
I was given a sample, that it is suppossed to be a medium thickness Rhodium on top of an infinite silicon waffer. The...
Nov30-13 05:07 PM
2 583
Hello, Empirically, the flux distribution of cosmic ray muons follow cos^2(θ) where θ is angle of incidence....
Nov30-13 02:24 PM
4 867
Hi, I'm studying about Renormalization group. I have a question about mass beta-function. Usually, when we...
Nov30-13 06:56 AM
9 1,217
As a physics student, I understand that α particles are emitted and are the same as helium atoms without electrons. ...
Nov29-13 09:05 AM
13 1,532
Hi everybody, i'm worried about some calculation. I have to write down the amplitude for the neutral Kaon...
Nov29-13 05:51 AM
7 3,654
Dear Physics Forum, As I understand it, the Higgs field is a quantum field that stretches throughout our universe....
Nov28-13 10:42 AM
48 15,222
Co-60 is produced from Co-50 through neutron activation. Neutron flux 10^18 nuetrons/(s*m^2). cross section is 20...
Nov27-13 06:12 PM
3 666
I've been trying to get a grasp of what they ideal of antimatter is exactly. I do understand that it's the 'opposite'...
Nov27-13 06:02 PM
6 792
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
5 866
I am not really sure whether this topic belongs here or not, but since my example will be a certain one I will proceed...
Nov25-13 09:50 PM
George Jones
4 816
Hi, aside from nucleons is there any other stable (metastable doesn't count in this question) hadronic matter that...
Nov25-13 09:03 AM
9 767
Hi all, Let me ask about what is meant that Narrow width approximation has an error ~ ## \Gamma/m ##, is it mean...
Nov25-13 08:04 AM
0 590
Hi All, I'm working through the theory of the strong interaction and I roughly follow it. However I have some...
Nov25-13 06:54 AM
1 671
Hello. I read about fast neutron therapy for cancer and the therapy uses a beam of high energy neutrons. How do you...
Nov24-13 01:52 PM
2 674
Hi all, why in SUSY we tend to use 2- components Weyl spinor field not the ordinary Dirac filed .. Regards,...
Nov24-13 11:47 AM
3 699
Hello, I am a layman who just read Sean Carroll's The Particle at the End of the Universe and I am trying to...
Nov24-13 08:06 AM
7 960
As I mentioned, I want to know if the cahrge distribution of nuclei has any influence on electronic properties. And...
Nov23-13 12:37 PM
2 713
For the electron, wiki lists its magnetic moment as −1.00115965218076(27) μB. It does not list it for the Muon or...
Nov23-13 02:35 AM
6 1,087

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