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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 63,529
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 26,202
I'm looking for a book written for non-scientists that has details about axions. As far as I know, they are particles...
Apr12-10 12:56 AM
ansgar
5 1,329
Using a small germanium gamma ray detector I have been collecting data on some newly acquired gamma decay sources. ...
Apr14-08 03:39 PM
malawi_glenn
6 1,328
I would like to derive the explicit formula of the BRST charge. http://en.wikipedia.org/wiki/BRST_formalism (Bottom...
Jul28-08 05:36 AM
ismaili
0 1,328
This is probably an easy question for most of you, but me nor my teacher knew. Today we learned that nuclear fission...
Oct8-04 10:57 PM
maccaman
4 1,326
Why does an matter-antimatter pair annihilate each other instead of "sticking" together (i.e. like ordinary matter...
Feb14-10 08:59 PM
quantumkiko
3 1,326
I would like to hear opinions on the variation in decay rates as described by Fischbach and coworkers and how (if at...
Feb19-13 11:58 PM
bcrowell
3 1,326
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 1,326
a proton is given a radius...i think its ~10e-15 since a proton is uud is this "radius" like a electron orbital...
May8-05 10:49 PM
Berislav
5 1,325
Interesting idea about extremely high-frequency light being absorbed by nucleons: ...
Sep3-07 08:45 AM
Astronuc
1 1,325
Hi I've been reading that muons are supposedly leptons (elementary particles), in the past confused for mesons...
Apr1-12 05:31 PM
Bob S
4 1,325
I was wondering, for instance in a neutral pion or the j/ψ meson, what prevents quark-antiquark annihilation during...
Jul23-12 12:59 AM
tom.stoer
4 1,323
i know no one has ever seen them before there just a theory but my question is what are they? do they make up quarks...
Feb21-10 05:51 PM
kikushiyo
8 1,322
for beta decay n --> p + e- + antineutrino since neutron has quarks udd while proton has uud, only the d changes...
Apr21-07 05:49 PM
AlphaNumeric
1 1,321
Is anybody know the value of kappa meson decay constant?
Aug23-10 10:23 AM
jtbell
1 1,321
hi plz explain what is nucleus shell model?
Oct31-11 02:27 PM
Vanadium 50
1 1,321
In reading through all the info that is coming out from today's big announcement, it seems as they still can't peg...
Jul5-12 04:33 PM
lpetrich
8 1,320
Why does alpha decay emit a helium nucleus.Why not a proton or gamma rays. Please help me understand the science...
Jul29-13 01:52 PM
the_wolfman
4 1,320
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 1,319
While working out a problem I got a result which gave rise to this doubt regarding value of action functional. Suppose...
Jun23-08 07:35 AM
Lester
3 1,318
Hello everybody, I investigate polycarbonate foils (makrofol) of 90 μm thickness irradiated by U-ions with a charge...
Nov24-11 10:23 AM
Swain
0 1,318
I'm doing some research on the pentaquark Θ 1540 and was just wondering if anyone could recomend a good website (or...
Feb27-05 08:48 AM
marlon
1 1,317
Is there anything in fundamental theory to explain the peculiarity of quark masses? The up and down have about the...
May7-06 01:12 PM
arivero
4 1,317
Hi! This is for those who have read Penrose's "The Road to Reality" (btw, fantastic book). In paragraph 25.8, on...
Jan25-10 01:44 PM
torquil
4 1,317
Good day All, A quick question: (My knowledge / assumption): A neutron moves very fast and can go through almost...
Dec22-10 03:13 AM
Kevin_Axion
8 1,317
this is the first time for me to prepare or thinking about the experiment which will be taken on the accerlerator. ...
Aug11-04 02:26 AM
annaph
4 1,315
What are your views on this? Assuming things continue to go all right what possible theoretical developments do you...
Sep10-08 03:25 PM
humanino
1 1,315
How do you determine in a particle interaction which force is responsible? For example a K- meson is found to...
Oct5-11 11:38 AM
kaksmet
3 1,315
When a massive nucleus splits, it forms two smaller fragments. For Uranium, we have A=235, and the typical fragments...
Jun6-11 12:18 PM
Bill_K
2 1,315
just thinking cross sections here. a neutron that is freed as a result of a fission of pure U235. travels @c/10(fast!)...
May4-12 07:02 PM
Astronuc
3 1,314
I was wonder what you felt the important experimental discoveries in high energy physics over the past twenty five...
Jan26-07 02:01 AM
vanesch
4 1,313
I spend my weekends reading up on quantum physics. Mostly these forums. I find myself flooded with jargon. So I have a...
Sep14-08 11:08 PM
Xezlec
2 1,313
I have a very basic question regarding the nucleus. I understand why you can only have a limited number of protons...
Mar18-09 01:34 AM
malawi_glenn
2 1,313
When people discuss the Schwinger model, sometimes they still call the electron field spin-1/2 and the EM field...
Sep29-10 12:16 AM
tom.stoer
1 1,313
Hi all, me again! :rolleyes: I'm trying to calculate the current created when an alpha particle strikes a silicon...
Dec4-11 01:55 PM
neural_jam
0 1,313
Would the observed half-life of a sample of a radioactive isotope (eg. iodine 131) be different from the nominal...
Jun3-12 08:59 AM
mfb
3 1,313
I have been reading a lot about nuclear plants and how when things go wrong the whole area becomes inhabitable. I have...
Jan29-13 06:20 AM
mfb
3 1,313
By De-Broglie,light also exibits matter property. According to him, wavelength=planck's constant/ momentum. And again...
Aug31-13 10:44 AM
jfizzix
3 1,313
I was reading the paper about the discovery of the first e+e- narrow...
Sep6-13 02:24 AM
mfb
3 1,313
An up quark has a smaller mass than a down quark. Is it possible that an up quark is made from 2 antidowns with...
Apr25-05 08:38 PM
Spin_Network
4 1,310
I haven't had time to digest this, but - http://www.physorg.com/news10263.html I wonder how far from Disney...
Jan30-06 10:24 AM
ZapperZ
1 1,310

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