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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
ChrisVer
187 50,502
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
ZapperZ
1 24,015
Can anybody please suggest some references (preferably review articles or lecture notes etc, freely available online)...
Dec23-10 05:12 PM
blechman
2 2,990
Hi, at first i want to apologize for my bad english. I have to give a speech on some result of a high energy...
Dec18-10 04:40 AM
Ps9
2 3,602
As the thread title suggests, I was wondering if electrically neutral particles like neutrons can absorb/emit/reflect...
Dec17-10 04:07 PM
lpetrich
2 1,221
As a person with a very basic understanding of nuclear physics, I am curious about the source of energy in a fission...
Dec28-10 02:55 AM
Drakkith
2 880
Is there any energy released during fusion of proton with neutron? I cant find it anywhere the details of this...
Jan3-11 08:16 AM
Vanadium 50
2 817
In calculations of weak interaction processes in the Fermi-theory, there are some amplitudes of the form:...
Jan9-11 09:10 AM
evilcman
2 753
reading the light-heart book of Aitchison, "an informal intro...", we see that the problem with mass terms in the...
Jan14-11 07:19 AM
arivero
2 975
Hi, Radioactive materials will decay to datughter products. in the mean process they emit alpha or beta...
Jan25-11 05:05 AM
rama1001
2 750
Hi everyone, Im currently in the way of learning about fusion to prepare myself for a thesis in this area. The...
Jan27-11 01:42 PM
AndyUrquijo
2 1,570
Hey, I've been reading a bit in the QFT book by Pierre Ramond about loops and i stumbled about some derivations in...
Jan27-11 01:35 PM
earth2
2 750
Hi everybody, as usual I need help with some definitions regarding many-loop calculations. In particular what do...
Jan27-11 04:58 PM
Sleuth
2 2,474
I have some questions about the relationship between the charge of a proton and an electron. Is it well understood...
Jan31-11 03:30 PM
mathman
2 2,558
Hello. Why isn't there alpha decay in fission reaction or fission fragments evolution ? is there only gamma and betas?
Feb1-11 02:42 PM
kilele
2 1,866
Hi yall, I was just wondering, seeing as how photons are massless, would there be a limit to the amount of...
Feb10-11 07:16 PM
easyrider
2 1,002
Hello, Just a few questions about a couple of terms in and not in the SM Lagrangian. I'll talk in particular about...
Feb14-11 03:12 AM
Parlyne
2 1,378
Hi, If I have a Lagrangian of complex scalar field (just U(1) local invariance). And I know that phi^star...
Feb22-11 06:36 AM
DrDu
2 1,811
Hi there, Someone asked me this earlier when we were talking about radioisotope dating. How do physicists determine...
Feb21-11 12:22 PM
Astronuc
2 2,254
For beta minus decay, I know the reaction is given by neutron -> proton+electron+anti(electron)neutrino. This is an...
Feb23-11 10:17 AM
UniPhysics90
2 2,390
i was told that high emergy gamma rays had a finite range in water. how can this be if they are both massless and...
Mar1-11 06:46 PM
Drakkith
2 916
I understand that the pi+ meson is made up of an up and an anti down quark, and the opposite for the pi- meson. ...
Mar7-11 12:24 PM
zincshow
2 2,807
how we look in for particles,decide their properties like mass ,charge,spin etc in experiments(collision experiments)?
Mar9-11 09:41 AM
Meir Achuz
2 751
Hey guys, does any of you know where I could find the Feynman rules for scalar QCD? If they where colour ordered,...
Mar11-11 02:27 AM
earth2
2 2,343
I've seen the value 129^{+74}_{-49} GeV/c^2 mentioned in some discussion and wikipedia as a prediction of the higgs...
Mar21-11 02:03 PM
baxishta
2 1,069
Hey. :) I am a Year 13 student and do not have to know anything about bubble chambers. However, they are mentioned...
Mar19-11 07:46 AM
magu1re
2 3,378
Hey Guys, Just a quick question. Can a W boson decay to a u and anti s or does it have to decay to a quark and...
Mar19-11 10:44 PM
Ajihood
2 2,630
I have some doubts regarding SU(3). These are at very basic level. First, how does one construct adjoint...
Mar23-11 06:28 AM
arroy_0205
2 1,704
Hello! I have difficulty trying with the interpretation of: (\frac{1}{2}) \otimes (\frac{1}{2}) \otimes...
Mar29-11 06:47 AM
Hymne
2 2,160
Perhaps due to the earthquake? Or does anyone know if it is just offline for some other reason (or for good). I was...
Mar24-11 08:37 PM
arivero
2 1,261
When Einstein proposed the cosmological constant, it was regarded as an arbitrary constant having no connection with...
Apr4-11 03:30 AM
tom.stoer
2 1,254
I want to know all about nuclear thresholds....where can i learn about them......? (e.g threshold energy and how...
Apr7-11 02:35 PM
Deepak247
2 1,097
Hi everybody, I have a experimental question. In cross-section calculation of production of particles (say D), one...
Apr22-11 01:21 PM
Manojg
2 1,666
I'm thinking about the thermodynamics of electron capture: p + e --- n + v(e) + energy (That is, proton absorbs...
Apr22-11 03:44 PM
CutterMcCool
2 2,459
The following rumor has been spreading around the internet quite rapidly: ...
Apr24-11 05:22 AM
Vanadium 50
2 2,310
Why some say that the existence of magnetic monopoles would violate the conservation of energy law?
Apr29-11 04:45 PM
Vanadium 50
2 1,040
Y is trapping anti-matter so difficult...if we create a vacuum and trap the particles via magnetic field y will it...
May2-11 04:46 PM
Drakkith
2 884
I'm not always on the same computer, often times I'm using my phone to look for answers when doing physics on the go. ...
May12-11 08:46 PM
GDogg
2 1,754
I have to give a brief presentation on the evidence for pairing in atomic nuclei. One of the items of evidence I will...
May7-11 12:25 PM
m.e.t.a.
2 1,560
I recently read a post which stated that the particle-antiparticle pair can be created by the interaction of photons ...
May11-11 11:40 AM
A. Neumaier
2 1,874
I was reading over some nuclear physics and I came across the binding energy of a nucleus. The equation is...
May21-11 05:51 AM
smith345
2 1,518
Doing some examples I came across the question: Can the following processes occur and if not, why not? Draw...
May20-11 01:18 AM
malcomson
2 1,123

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