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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
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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
ZapperZ
1 25,918
God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...
Jul18-14 12:32 PM
ChrisVer
187 62,452
Hi everybody, i'm worried about some calculation. I have to write down the amplitude for the neutral Kaon...
Nov29-13 05:51 AM
jkp
7 3,662
I understand that helium 3 has a very high probability of fusing with thermal neutrons, and the reaction produces...
Sep24-13 12:29 PM
CraigH
9 1,629
There's a recent (released?) documentary called "Particle Fever" about the search for the Higgs boson. I'm not sure if...
Oct1-13 04:22 PM
DennisN
3 4,014
What are the properties of a photon with Planck energy? Is it even possible to interact with it, or does it just...
Sep26-13 02:41 PM
fzero
8 3,282
I'm not sure this thread belongs in this forum since we have now discovered a Higgs like boson. But I'm trying to...
Sep3-13 03:21 PM
Bill_K
20 5,751
I'm a little confused about what is actually meant by the JP = 1/2 + octet. I'm pretty sure it means the particles...
Sep10-13 03:13 PM
lpetrich
7 1,916
The photon field has two physical degrees of freedom (dof): its two transverse polarization directions. But what...
Oct4-13 10:14 AM
Lapidus
6 2,539
My question relates to the very origin of the elementary particles. I understand that the Higgs field breaks the...
Sep18-13 07:38 AM
lpetrich
18 4,228
I was reading the paper about the discovery of the first e+e- narrow...
Sep6-13 02:24 AM
mfb
3 1,301
So I'm doing a Beta Spectroscopy of Sodium and apart from the Energy Spectrum, I'm intending to use the Kurie Plot to...
Sep5-13 09:17 AM
mfb
3 1,515
Hi, Is there any good books which explain/calculate Wigner rotation, tensor operator, two-particle helicity state...
Sep8-13 08:43 PM
jfy4
2 1,329
Hi, this is probably pretty simple but it's puzzling me... In neutrino oscillation, you produce and detect...
Sep6-13 07:12 PM
mfb
1 1,318
I've just acquainted myself with 'effective field theories', and have found myself thinking about the following...
Sep10-13 10:41 AM
jfy4
13 1,721
Hi all, I'm not so expert in C++, but I try to make a a simple program to calculate and plot the ttbar pair mass...
Sep10-13 01:08 PM
Safinaz
4 1,449
For an Ap Physics Homework assignment our teacher had us calculate the Nuclear Strong Force for a Helium nucleus with...
Sep12-13 06:34 PM
mfb
1 1,308
Hi I am learning at http://en.wikipedia.org/wiki/Weak_hypercharge . I do not know light/left-handed and...
Sep13-13 02:30 AM
sweet springs
0 1,158
Hi, If you have a even-even nuclei wich is deformed, you get a rotational spectrum of 0+,2+,4+,.... I don't...
Sep15-13 02:35 PM
Bill_K
5 1,482
Hi, When i studied gamma-decay i encountered a set of transition rules telling for each radiation type...
Sep17-13 04:42 AM
andrien
3 1,684
Some one knows a study material to diagonalize a matrix mass for 3 neutral scalar using perturbation theory like...
Sep15-13 12:58 PM
Ton
0 1,131
Hi guys, Could someone with a better understanding of the standard model answer a question about the weak force? ...
Sep18-13 04:18 PM
fzero
12 2,092
Hi folks, In his seminal work of 1937, Wigner showed that the rest mass and (absolute) spin of a particle are the...
Sep19-13 06:06 PM
metroplex021
2 1,244
Dear Physics Forum, can anyone tell me which of the fundamental interactions is involved in the Higgs Field? Or...
Sep24-13 03:35 AM
my2cts
4 1,398
Hi folks, I was just reading about symmetries, and why we say that the two spin states of the electron are states...
Sep22-13 01:47 PM
dauto
3 1,207
What are the weak and strong forces? I'm trying to understand what are the strong and weak forces and more...
Sep24-13 03:27 PM
mathman
3 2,152
Hello If the time that takes for magnetization to rotate from its initial position (parallel with external...
Sep25-13 11:07 PM
marcusl
3 1,671
What is the force that makes a neutron eject an electron, and how strong is it?
Sep29-13 03:46 AM
mfb
47 18,320
Hello fellow physicsforumists. I am currently looking at the standard model and one of the key ingridients is to...
Sep30-13 05:57 PM
kurros
7 5,957
If a fast moving thermal neutron can be slowed down to increase absorption chances, is there a way it can be brought a...
Oct2-13 02:39 PM
mfb
20 10,683
I expect you've heard about how the proton's weak charge has been measured directly: ...
Sep29-13 09:22 AM
Bill_K
4 1,184
1. Problem statement i am trying to calculate the momentum and energy of the products in the reaction 7Be4 + e...
Sep29-13 10:43 AM
Catty
3 1,772
Hi, I recently read the following article http://arxiv.org/pdf/0805.2895v4.pdf which deals with dark matter...
Oct2-13 02:29 PM
Machoire
0 974
I read that nuclear binding energy is the energy required to separate a nucleus into its comprising nucleons. Why...
Oct2-13 09:28 PM
dauto
7 1,663
Till sometime it was believed that Black Holes were impossible to create ( made by men ), now some theories which were...
Oct4-13 10:46 AM
stevebd1
4 4,215
I have to work out which if these two beta-decay processes are energetically possible, given that the beta-decay...
Oct4-13 10:07 AM
mfb
1 954
I have heard that if n/p ratio of a substance becomes more than 1.56, it becomes radioactive. But for Cobalt-60, n/p=...
Oct5-13 03:31 AM
americast
3 1,362
Dear Physics Forum, As I understand it, the Higgs field is a quantum field that stretches throughout our universe....
Nov28-13 10:42 AM
Mandragonia
48 15,247
Hi people, I have one question, leptons and quarks are electromagnetically charged particles. Is there an...
Oct30-13 03:46 AM
Hluf
8 1,003
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
Bill_K
6 796
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
mfb
3 669
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
nst.john
7 1,203

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