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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 57,881
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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 25,044
Recently, I read a review on magnetic monopole published in late 1970s, wherein some conjectures of properties...
Nov16-13 03:30 AM
Simon Bridge
1 739
The problem is showing (□+m^2)<0| T(∅(x)∅(y)) |0> = -δ^4 (x-y) I know that it is relavent to Green's function,...
Nov12-13 09:34 AM
2 1,577
Hello everyone, I have been wondering about the quantization of Maxwell's equation in free space, but now suppose that...
Nov12-13 08:08 AM
6 1,149
Hello everyone, I have read about the theoretical values of the Z boson decay partial width and how well they...
Nov11-13 01:06 PM
Vanadium 50
6 1,109
I am studying QFT and got stuck on one question which may be simple. Why is structure constants (in Lie algebra) real...
Nov11-13 10:05 AM
George Jones
3 1,180
I confront an integration with the following form: \int d^2{\vec q} \exp(-a \vec{q}^{2})...
Nov10-13 07:55 PM
2 994
I was reading this recent Scientific american article wich I found interesting, and was spurred on by it to ask a...
Nov9-13 07:04 AM
13 1,907
Hello, I have had this question for awhile now. What is the difference a delta baryon and a nucleon? they seem to have...
Nov9-13 04:34 AM
2 994
Hi Just a quick question that I have been wondering about ... how do nucleons fill energy levels, and what is the...
Nov8-13 06:26 AM
1 921
Hi, experts I got a very naive question. I read the following sentence in a paper: "New results on the production of...
Nov7-13 07:36 PM
5 911
Why c - 14 is radio active though n/p ratio is less than 1.5?
Nov6-13 08:21 AM
7 851
Sorry - a very vague question: Could a superconductor be used to detect dark matter? The dark matter might...
Nov5-13 08:16 AM
2 809
Imagine that two electrons interact by exchanging a virtual photon. Electron A gains momentum ##-\vec{p}## and...
Nov5-13 07:43 AM
2 867
Hi. I am confused about something related to the creation of particles/antiparticles in a complex scalar field. I...
Nov4-13 05:52 PM
2 887
The first question is why it is sometimes called the "Higgs meson"?-even by its discoverers, see recent controversy...
Nov4-13 08:12 AM
10 1,428
Veltman states that the cosmological constant in the Higgs model takes the form C= m2M2 / 8g2 , which is way too...
Nov3-13 04:22 PM
26 2,788
Hi all, I'm trying to calculate the Boltzmann factor for a fusion reaction, however I can't find the activation...
Nov3-13 04:02 PM
0 822
Hi, I'm doing some coursework on nuclear fusion, and am trying to calculate the energy released by fusing a tritium...
Nov3-13 10:21 AM
2 899
As far as I can tell Tevatron was able to identify relative to background an excess in decay processes in the range...
Nov1-13 10:29 PM
3 1,007
Electron is a charge, what means concrete configuration of electric field, growing to infinity in the center (if it...
Nov1-13 02:28 PM
23 2,401
The detection of spin in Hadrons and Leptons is done through magnetism, a spin 1/2 particle has two states in a...
Oct30-13 03:50 PM
7 1,107
Has anybody thought of it before? I mean even if it were energetically expensive to harness it it might actually...
Oct30-13 02:52 PM
38 3,935
Do protons and neutrons have excited states? This page shows some simulated shapes of protons....
Oct30-13 10:30 AM
5 980
Good afternoon fellow scientists,i have a small problem in evaluating the propagator for the complex Klein-Gordon...
Oct30-13 08:40 AM
6 1,097
Hi people, I have one question, leptons and quarks are electromagnetically charged particles. Is there an...
Oct30-13 03:46 AM
8 971
Qhy does SO(n) have the same number of dimensions of O(n), whereas SU(n) reduces the dimensions of U(n)? Isn't the...
Oct29-13 08:55 AM
3 789
Hi Folks -- can anyone direct me to a table online which lists the wavefunctions for the hadrons in terms of their...
Oct28-13 01:18 PM
4 761
Really quick question. In a graph like this: Source ...
Oct27-13 07:40 PM
6 1,022
The quark content of the neutral pion is listed as \frac{u\overline{u}-d\overline{d}}{\sqrt{2}} What is the proper way...
Oct27-13 05:03 PM
4 934
Hello everyone, I have a question about virtual corrections of an external fermion line. According to the LSZ...
Oct27-13 05:47 AM
2 1,079
Hi all, Can anyone tell me whether the counterterms introduced in renormalized perturbation theory (see e.g....
Oct26-13 08:03 PM
7 1,306
Hi, I read about Noether's theorem, which states that if, under a continuous transformation, the Lagrangian is...
Oct26-13 03:30 PM
1 1,348
This is probably a minor point, but I have seen in some QFT texts the Euler-Lagrange equation for a scalar field, ...
Oct25-13 10:46 AM
4 951
Peter Higgs is going to get a Nobel prize for physics, since Higgs boson's existence was confirmed in the experiments...
Oct24-13 06:30 PM
9 1,101
The charts at CERN show calculations that a 126 GeV Higgs boson is expected to decay to a bottom/anti-bottom quark...
Oct23-13 05:24 PM
2 946
The University of Edinburgh is offering a massive online open course on "The Discovery of the Higgs Boson" to the...
Oct23-13 08:20 AM
0 823
With the recent experimental evidence that the Higgs boson likely does exist, and that the Higgs field may well be...
Oct22-13 01:33 AM
king vitamin
17 9,571
What is the Higgs boson's mechanism for giving mass?
Oct21-13 07:18 PM
29 11,896
My question concerns the delta++ baryon. I understand that the rest mass of quarks makes up a very small percentage...
Oct21-13 12:17 PM
6 1,016
Whenever people begin to explain the nuclear strong force, they relate it to electricity. I was wondering if color...
Oct20-13 09:04 PM
11 1,091

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