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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 57,424
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 24,978
Looking at the fission of Uranium 235, the typical end product will be Barium 141 and Krypton 92, and 3 neutrons....
Feb11-10 04:03 AM
2 1,234
Hi everyone, I'm studying electron-electron scattering, starting with the Dirac equation it ends up calculating the...
Feb20-10 05:41 AM
2 1,413
Hey, For my first post here, I had a question about the gamma spectrum of Na-22. I measured the gamma spectrum...
Feb18-10 05:20 AM
2 11,030
In pair production, what is the formula for the energy of an electron or positron of this conversion. Also, what...
Feb21-10 10:12 AM
2 1,738
Can anyone advise on the following : Complete the square for this expression : (theta)*i Bij (theta)j...
Feb22-10 05:12 AM
2 1,695
Hi all, Got a bit of a problem with a lab experiment at uni (I'm not sure if this is the right place to post this,...
Feb22-10 07:10 PM
2 5,706
Beta particles are fast moving electrons emitted by the nuclei of certain atoms. When beta particles enter a material...
Apr12-10 06:51 PM
2 5,702
hey guys, this may be a little naive but, I can someone explain to me the physical aspect of the Hamiltonian? In...
Mar7-10 10:18 AM
2 947
Why is the composition of eta prime meson known as the singlet state? See: ...
Mar10-10 07:59 PM
2 3,199
When summing over photon polarizations for a given amplitude if it can be written as: M = M^{\mu} \epsilon^{*}_{\mu}}...
May5-10 08:23 AM
2 3,488
Greetings, Would anyone happen to have any clue as to what equation or what sort of math this is? Thanks ...
Mar20-10 09:41 PM
2 1,207
What is physically meant by: \frac{d \sigma}{d \Omega} Where \sigma is the cross section and \Omega is solid...
Mar21-10 05:17 PM
2 3,977
hey im a bit confused re the difference between nuclear spin and isospin. are they the same thing? thanks
Mar24-10 08:54 AM
2 2,560
Hello, Now that there's only one week left until the LHC starts working on the collisions, I think it's a good idea...
Mar24-10 09:23 AM
2 1,244
Hi, In the derivation of scattering amplitudes (e.g. page 94 in...
Apr15-10 09:56 AM
2 1,039
I've been reading up on neutrino oscillations and I have come across this issue. I know that oscillations are...
Apr18-10 10:05 PM
2 2,021
First, the assembly, time lapsed of course... Atlas Assembly ...
Apr19-10 04:06 PM
2 2,552
I know this is probably really simplistic for you guys, but I just learned about transmutation in my Chemistry class...
Apr21-10 09:26 AM
2 1,115
I have read that charge is supposed to be invariant under time reversal. Now, if I consider two like charges...
Apr23-10 03:11 AM
krishna mohan
2 1,270
Where is Yukawa's famous paper, Yukawa H 1935 Proc. Phys. Math. Soc. Japan 17 48, available to download? I want to...
May3-10 10:52 PM
2 3,642
Hello ! In an article (Einstein's mistakes) published in 2005 in "Physics Today" by Steven Weinberg, he says:...
May3-10 04:07 AM
2 1,092
Hello, in relativistic quantum field theories all particles are members of (unitary) representations of the...
May18-10 08:30 AM
2 1,180
Hello! I met some annoying problems on quantum field operators in QFT.They are as follows: (1)The...
May10-10 06:02 PM
2 1,068
Has anyone produced research on the effects of sound (high frequency, high amplitude) on Atomic or Sub-Atomic level...
May10-10 03:03 PM
2 1,030
For some of my work, I am investigating methods of scanning for nuclear material. As part of my study, I have run...
May12-10 05:26 AM
2 3,758
Hi, I want to know why a small change in energy released, Q, in alpha particle decay leads to a large change in the...
May18-10 10:37 AM
2 2,738
Can Anyone explain how the existance of more than one generation of quark means that flavour change neutral currents...
May16-10 09:10 AM
2 2,286
I just read something about the creation of deuteron in the first step of the pp cycle. Given that you have the...
May20-10 08:31 AM
2 1,154
One argument in favor of SUSY is that without SUSY, the running gauge coupling unification do not meet for the three...
May24-10 05:12 AM
2 985
First off, I would like to apologize for my ignorance. I am a college freshman, computer science, so I'm not as...
May31-10 07:47 PM
2 1,493
I was reading an article about neutrinos in a Science Illustrated magazine about a month ago. And in this article it...
May27-10 05:33 AM
2 1,239
Hello! Have a question: Imagine a world described by the Standard Model, supplemented with three right handed...
May26-10 03:47 PM
2 1,026
hello, does the mean lifetime of a decaying nucleus changes with temperature? I generally think that mean lifetime...
May28-10 02:08 PM
2 811
The time period to which this is referring is during the epoch of decoupling, if you know what that is. (During the...
May30-10 12:16 AM
2 2,674
What's the relation for the Compton cross section? I remember it going as 1/(1-cos(theta)) but can't remember the...
Jun4-10 05:58 AM
2 1,412
In this Picture: at the beginning,...
Jun5-10 08:01 AM
Meir Achuz
2 1,076
Hello all. Would anybody know where I can find data on gyromagnetic ratios/magnetic moments/g-factors of mesons? I...
Jun14-10 02:04 PM
Vanadium 50
2 862
According to the third paragraph over here, "Quarks have the...
Jun26-10 10:01 PM
2 982
hey, i want to find the lowest order strong interaction feynman diagram for the following process: \Sigma^{++}_c...
Jun27-10 02:22 PM
Vanadium 50
2 1,654
I wonder if there is any correlation between the weak coupling of a quantum field in the path integral and how it adds...
Jun30-10 04:21 PM
2 1,405

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