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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
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 26,206
God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...
Jul18-14 12:32 PM
187 63,553
I just finished reading the Wikipedia article on the quark-gluon plasma and it states that because of the large...
Apr2-09 08:36 PM
4 5,839
Can someone explain how one derives the 4-point Fermi interaction from the full Standard Model? I understand you...
Apr8-09 09:39 AM
3 2,004
Conceptually, how does one calculate hadron scattering processes from the strong force, if one has the amplitudes for...
Aug13-09 11:32 PM
6 2,342
For the process where two neutral pions turn into two charged pions, I noticed that this can occur through both the...
Sep25-09 02:22 PM
4 2,566
A free proton cannot turn into a neutron (via beta decay) because the neutron is heavier and that would violate energy...
Oct5-09 06:42 AM
7 2,410
I keep on hearing that there are hundreds of hadrons, or even more ambiguous a zoo of hadrons, but for some reason...
Jan25-11 11:12 PM
17 4,516
Why are spin 0 mesons pseudo-scalar, and spin 1 mesons vector? Why can't spin 0 mesons be scalar, and spin 1 mesons...
Mar4-11 09:19 AM
Meir Achuz
3 2,106
I still don't understand antisymmetry and fermions. Is the proton wavefunction equal to this: ...
Mar29-11 07:45 PM
7 1,896
Particle accelerators use EM to guide and accelerate charged particles to close to the velocity of light. Is it...
Jan24-09 08:10 PM
11 2,855
I am trying to study QFT from Weinberg's Vol. 1. I am at the moment stuck at the path integral quantization of QED...
Dec3-07 02:28 PM
2 1,589
Does anyone understand how weinberg in his QFT book does QED via path integrals: specifically, how does he integrate...
Feb2-08 10:52 AM
7 2,671
In equation (2.5.47), I am getting U(R(\hat p) = e^{+i \phi J_3} e^{+i \theta J_2} Instead of the "-" signs...
Feb4-08 08:56 AM
2 1,161
I would very much like to know what work has or is being done on the notion of a superconducting relativistic vacuum....
Mar6-06 05:30 PM
8 2,411
Is this reaction possible , i mean bombarding a 1H target with an electron to form a neutron that's all what i...
Jan28-09 09:39 AM
7 4,375
How would one calculate the velocity of a 1MeV neutron?? I tried the following the attached formula for V/C but E...
Aug27-14 05:03 PM
5 604
What is the relationship of the nutrino to infrared?
Nov29-03 12:42 AM
1 3,194
Hi everyone, So I've been wondering how much energy does it takes to impart some kind of effect on the higgs field....
May26-14 03:34 PM
18 934
Hello all, In beta-plus decay, a proton decays into a neutron and emmits a positron. If the neutron weighs more...
Mar14-04 12:00 AM
5 9,170
Do neutrinos have mass and spin?
Jan22-05 10:08 PM
Andrew Mason
26 3,200
In the Meson theory of nuclear forces, exchange of pi meson is given by: n\rightarrow n + \pi^{0} p\rightarrow p +...
Sep11-05 01:18 PM
4 2,239
Nuclear forces are said to be non-central. By definiton of central force, angular momentum is constant. It is usually...
Sep17-05 03:41 AM
5 5,043
I need to resolve a few queries on beta decay. The standard explanation given in most texts is during beta decay, a...
Dec12-05 08:20 PM
19 2,413
Neutrinos are emitted during the beta-decay process. Neutrinos definitely have spin. Do neutrinos have mass? Most...
Dec21-05 07:26 AM
4 1,776
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
1 968
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
1 950
((Not certain this is the right place)) Hi guys, Currently i'm voluntarily undertaking a project qualification...
Oct5-11 12:25 AM
6 2,652
Please, could someone here teach me, in a no-pun-intended crash course :smile:, of how relativity plays into the...
Jun27-09 12:12 PM
Vanadium 50
3 1,166
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 1,126
Could someone please clarify my problem with the subject of quark confinement within hadrons. I understand that from...
May13-04 10:03 PM
17 3,330
What does it do in a scintillation counter, does it split the voltage pulse into several amplitude channels which are...
Mar14-05 02:24 PM
6 7,588
I have just completed my undergraduate degree and results pending will be starting a PHD in nuclear physics. However...
Jun5-06 02:15 PM
0 1,163
Can someone explain to me this technique in high energy physics data analysis
Oct5-07 05:21 AM
4 1,734
PhysOrg recently release an article about Professor Lene Hau, known for slowing light WAY down, using ultra-cold...
Apr14-05 07:27 PM
0 1,430
Hello physics people, I hope all is well, and that everyones feeling festive even though i dont celebrate xmas...
Dec17-09 05:14 PM
0 1,096
Hi. I hope I'm posting in the right place. I was just wondering, what is the difference between the graviton and...
Sep14-12 12:03 AM
21 30,130
Below is a post to sci.physics. It proposes just storing ionized gas for fuel for ion drive engines rather than using...
Oct6-07 07:08 PM
6 2,336
I've seen that with Moeller scattering, the attractive force between the nucleus and the electron can become...
Oct5-07 11:45 AM
0 1,594
What is hindrance factor? What does it indicate? If the Hindrance is very high? If its low? For eg. 103Rh (39.76...
Jul20-06 08:55 PM
1 1,396
I went to see the LHC (my version of a pilgrimage to Mecca). I bought a tshirt with a formula on it, but I can't find...
Jul11-12 12:55 AM
15 7,555
I've searched all over for a down/anti-down (Dd) quark pair but the closest thing I can find is the neutral Pi meson,...
Jul29-04 09:21 AM
10 2,096

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