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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
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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
Hi everyone... I have answered already a lot of questions here on the topic of the different elementary particles...
Jun19-09 10:48 AM
73 69,549
I have the following contour integral form of Wick's theorem (C indicating contraction): C=\frac{1}{2 \pi i} \int...
May31-09 07:03 PM
1 4,213
well, thats the heading of a project i am doing....i need some help on neutron detectors... how they are dectected...
Jun22-09 07:23 PM
Bob S
3 3,318
I was told that if there is a wavefunction containing a proton and a neutron that it must be anti-symmetric under...
Jun24-09 12:43 AM
14 4,868
In Standard Model, we have 19 free parameters: me Electron mass 511 keV mμ Muon mass 106 MeV mτ Tauon mass ...
Jun12-09 09:40 AM
3 2,439
Quick question. If particles that mediate interactions are called gauge bosons, why isn't Pion considered a gauge...
Jun2-09 05:13 PM
8 2,197
Dear experts, Does renormalization mean discarding corrections to a known constant? I mean, we assign a known...
Jun18-09 03:40 PM
36 6,750
Hey. I was wondering, can we 'see' antimatter? By this, I mean, does a positron ever emit photons, or can we shine a...
May25-09 07:34 AM
23 2,743
I have been researching about fusion power to understand how it operates during thermonuclear reactions. I do not...
May24-09 05:20 PM
5 1,349
I've been searching online and in my qft books (im an early phd student) and I can't find a clear explanation. If you...
May26-09 08:07 PM
7 1,700
the whole concept, I just don't get it. really its the unification I don't really understand. does flavor turn into...
Jun23-09 10:29 AM
12 2,752 "In physics, mirror matter, also called shadow matter or Alice matter,...
May24-09 11:29 PM
0 2,936
Hello! What do we mean when we say a particle in on shell? What is off shell? I gather it is related to energy and...
May25-09 02:41 AM
4 2,484
In my physics class my teacher said that a meson is made up of one quark and one anti-quark. But when, for example,...
May25-09 06:12 PM
5 1,167
Can we use this tool for computing cross-section?
May26-09 10:25 AM
0 994
To my understanding this is an electron in the K-Shell being absorbed by the the nucleus and along with a proton...
Jun3-09 07:19 AM
14 2,142
I am reading a book (Di Francesco's "CFT", pg 337) in which it is given that if we take the operator that translates...
Jun14-09 12:38 PM
2 3,513
Can someone please tell me the history of high-energy electron-positron collisions? In specific when was it...
Jun2-09 04:01 PM
12 1,893
I have a few questions: 1) The tensor product of two matrices is define by A \otimes B =\left(...
Jun2-09 02:55 AM
4 1,705
For SU(2) rotational invariance there is a clear interpretation of what all the generators mean. They correspond to...
May31-09 03:27 AM
0 1,037
I was reading about AdS/CFT and its possible description of superconductors. It is said that superconductors may...
Jun2-09 01:29 PM
6 3,158
Question: Does the dimensionless quantity derived from the constants below have any physical meaning? ...
Jun9-09 02:32 PM
8 1,368
I'm looking for a probability plot for the beam target D-D & D-T reaction versus deuteron energy. I can calculate the...
Jun5-09 09:12 AM
0 927
What is Universal weak coupling hypothesis?
Jun11-09 04:25 AM
2 1,686
i am a student working on theoretical atomic, molecular, optical physics i now need to know some techniques in...
Jun8-09 10:18 AM
3 1,493
assume that we have N spin-1 bosons all on the same spatial orbit. The problem is that what values the total...
Jun9-09 10:10 PM
6 1,559
Hi there! The experiment: I'm counting Gamma and beta rays emitted from gamma and beta cylindrical sources, for...
Jun15-09 08:04 AM
10 2,786
If I have a theory... some Lagrangian and I need to impose a gauge condition... what is more preferable 1) The...
Jun8-09 03:07 PM
0 662
An understandable explanation please.
Jun15-09 12:15 PM
21 2,929
Hi. I'm doing some jobs about hadron physics, and i have a question now. How can i make a three body phase space...
Jun10-09 08:10 AM
Harry Potter
0 2,194
Would anyone care to explain this equation/model to me? Here is the link:...
Jun10-09 03:32 PM
3 974
Suppose an antimatter at lower energy(K.E) collides with a matter in higher energy then what will be the output.
Jun12-09 01:45 PM
1 926
Can antimatter(positron) can be converted into a matter(electron) . If yes what other particles are created in that...
Jun12-09 03:54 PM
Bob S
1 843
Gluon is massless particle ,why strong interaction is short-range force?
Jun16-09 11:36 AM
Abbas Sherif
8 5,331
Reference: Ununbium - Wikipedia
Jun14-09 06:23 AM
2 1,625
Hi, 1: I just want to ask that what does SU(3) x SU(2) x U(1) means? and when a lagrangian is invariant under...
Jun15-09 11:13 AM
2 5,470
For current fusion technology the method for containing the plasma is with magnetic fields. However the plasma reaches...
Jun20-09 04:14 PM
2 3,486
It is my understanding that physicists hope to use conservation of energy in the LHC to determine if there are...
Jun21-09 12:46 PM
5 2,020
Does any one has any idea how the spinors of the 3/2 particles look in the helicity basis? Basically, I'm trying to...
Jun25-09 03:42 AM
0 850
Ok, i'm confused. Wavelength and frequency is basically the same thing, just different measures. Hight energy photon...
Jun25-09 09:50 AM
2 1,316

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