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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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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
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According to Steven Weinberg ('The quantum theory of fields', vol.1), the principle of gauge invariance stems from the...
Sep3-09 06:57 AM
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If you fire energetic ionising particles, like electrons or protons, at a stationary target, the important...
Aug28-09 06:56 AM
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I understand why Fusion releases energy.. The product is "lighter" than the reactions and the missing mass is...
Aug31-09 11:30 PM
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I watched some interesting videos on the Large Hadron Collider (LHC) and it raised a whole ton of questions. If my...
Sep2-09 11:34 AM
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Hello PF members, I curious to know some basic idea..why the line shape of nuclear decay is displayed as a...
Aug25-09 04:17 PM
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I would like some tips about what book I should read if I want to properly understand the relation between local...
Aug27-09 06:01 AM
George Jones
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Having discovered up, down, strange, charm and bottom quarks, why did scientists undertake similar experiments using...
Aug26-09 05:57 PM
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I have so far learned that nuclear forces are strongest forces acting at short ranges. But how do they behave at a...
Aug27-09 10:59 AM
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Hi I'm trying to understand very basic aspects of the WZW model, and would appreciate any help. The main thing i...
Aug27-09 02:34 PM
Jim Kata
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Hi, Could someone tell me please what is the scientific consensus(or some interesting theories) on why do muons...
Aug28-09 03:05 PM
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I have worked out the total spin for the elements up to Neon however I hit a snag with Nitrogen and Fluorine. The...
Sep4-09 09:59 PM
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I have a question about the nature of matter on earth, the most stable form of hadrons which exist on earth are made...
Sep1-09 12:43 AM
Vanadium 50
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I'm watching a video on Youtube entitled "Angels and Demons - The Science Revealed" in which the topic of discussion...
Sep23-09 08:08 PM
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Hello: The gauge symmetry of the standard model is written in authoritative places like wikipedia :-) as...
Sep3-09 07:14 PM
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Suppose I want to find the minimum velocity of the electron and positron required to make a Z boson during...
Sep4-09 05:25 PM
2 1,371
Can nuclear weapons explosion produce "neutrino pluse"?
Sep9-09 07:08 AM
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I'm curious as to whether parameters like rest mass and mixing angles, half-life for 2nd/3rd gen and other properties...
Sep11-09 12:16 AM
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1-Half life is the time it takes for half of the nuclei in a sample of radioactive material to decay(Am I right?). Why...
Sep11-09 06:13 AM
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I was wondering if we could create a device that could interact with neutrinos and extract their energy to some...
Sep10-09 04:34 AM
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Hi, everyone! There was a recent paper arXiv:0807.4454v2 where authors present a revised version of Paris...
Sep10-09 04:33 AM
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When writing a reactivity in dollars, what is the proper notation? Would it be 0.43$ or $0.43? or is it just 0.43?...
Sep10-09 03:20 PM
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Can someone please clarify beta decay for me. As I understand it, in B- decay, a neutron turns into a proton,...
Sep11-09 01:41 PM
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I have been learning particle physics lately but it's been mostly from a theoretical perspective and not a...
Sep11-09 07:01 AM
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If an nuclide can be fissioned by thermal neutrons does that always mean it can be fissioned by fast neutrons. If not...
Sep13-09 05:14 PM
1 3,706
How is fusion initiated with a laser? What are the difficulties that are preventing physicists from using it?
Sep14-09 10:11 AM
Bob S
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Short question. I know that COLLIDING beams are much more effective than when moving particle hits a target in...
Sep14-09 07:32 PM
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I am a graduate student of micorbiology. My problem is to find out the average intensity of a particular UVC light...
Sep16-09 08:21 AM
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Is anyone here familiar (more or less) with the new type of telescope called IACT, Imaging Air Cherenkov Telescope. ...
Sep16-09 12:59 AM
Vanadium 50
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We call a group G "simply connected" if every curve C(t) in G which is closed (that is, C(0) = C(1) = I) can be...
Sep15-09 11:50 PM
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Hello: Can anyone please tell me how do they identify the particles in the detectors?+, for instance,...
Sep17-09 02:29 PM
Bob S
5 1,086
What kind of subatomic particle streams are scientists able to generate and how do they do it? I know that LHC is...
Sep16-09 12:00 PM
2 1,038
dear all, currently iam doing my phD in theoretical nuclear physics. i have come across some problem that requires...
Sep16-09 09:17 PM
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I need to determine what modes of decay are possible for a 55134Cs isotope by using energy considerations. I know that...
Sep18-09 03:38 PM
0 1,358
Hi In Halzen's "Quarks & Leptons" all discussed particle interactions conserve particle number in some sense...
Sep22-09 04:52 AM
Vanadium 50
8 1,462
I can't find the value of the Yukawa coupling g, for neutron-proton scattering for example, where the Yukawa potential...
Sep20-09 05:47 PM
1 2,612
Quark physics is completely out of my depths but I was wondering if, in a nucleon, they assume certain orbitals like...
Sep21-09 08:31 AM
1 878
if black holes are supposed to suck everything how come gravitons are emitted. cause to attract something gravitons...
Sep22-09 08:40 PM
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When it is said that the relative strength of weak interaction is \ 10^{-5},what does this mean? On calculation I...
Sep22-09 04:36 PM
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Sorry, this is probably a dumb question but I am new to physics so forgive my ignorance. I learned in class that when...
Sep24-09 08:20 AM
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Hi everyone! Can somebody briefly explain me what the GIM Mechanism (Glashow, Iliopoulos, and Maiani) is and why does...
Sep24-09 10:57 AM
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