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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
ZapperZ
1 25,936
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 62,509
I understand how fission happens. But what I do not understand is why only a few certain nuclei are actually...
Jan30-09 09:02 PM
granpa
34 4,007
Hello once again. I'm trying to understand the relation between the superspace representation of the SUSY generators...
Feb9-09 11:41 AM
JosephButler
5 2,109
At a physics conference on the east coast, feynman says that empty space isn't really empty but empty space make up of...
Jan30-09 06:19 PM
math_04
12 5,466
Hey all, I am an undergraduate taking a particle physics class and we just learned that the EM force was caused by...
Feb9-09 10:49 AM
lbrits
2 2,083
Hi: I am confused that we talk in general about only nuclear spin larger than 1/2 which has electric quadrupole. For...
Jan29-09 03:41 PM
clem
14 2,256
Ok, I know this question is very old, and it has probably been answered by now, but if the electron does not have an...
Feb2-09 08:22 AM
enotstrebor
54 13,823
Hello, how do the angular distributions of Bhabha Scattering e^+ e^- \Rightarrow e^+ e^- and Muon pair...
Feb7-09 12:28 PM
Sideways
1 4,328
I can picture gravity as the warping of spacetime as postulated by GR but I have not heard a descriptive explanation...
Jan30-09 11:03 PM
jtbell
1 1,696
Hello, I'm a novice in this field, but there is one thing I have been wondering about for a long time. Maby you could...
Jan29-09 09:29 AM
malawi_glenn
1 1,802
Dear All, I'm reading Georgi's text about Lie algebra, 2nd edition. In chap 6, he introduced "Roots and...
Feb16-09 05:22 AM
Atakor
7 2,639
Can anyone recommend a good Feynman diagram calculator ?
Feb2-09 02:14 AM
BenjF
4 11,473
Hi, i would like about the decay of positronium (a electron and a positron going around the center of mass) in 2...
Jan31-09 01:51 PM
Redbelly98
5 3,437
why we need intermediate particles? i.e. why we want virtual particles like w,z boson etc.. for example,in the beta...
Jan31-09 05:57 PM
malawi_glenn
4 1,506
Well I was talking to my physcis teacher because were currently studying nuclear physics. And he likes tellign stories...
Feb2-09 12:16 PM
QuantumPion
2 2,436
Hi all, I need to construct the Casimir op. of group SU(3). I have these relations; T2=\sum C_{i}_{j}T_{i}T_{j} ...
Feb4-09 10:40 PM
torehan
12 7,325
What exactly does the weak interactive force act on? Does it act on Mesons and Bosons?
Feb2-09 01:59 PM
hagi
3 1,497
Hello, I'm fairly new with the nuclear physics, but I'm willing to study and learn as much as possible. I've...
Feb4-09 04:31 PM
malawi_glenn
8 4,327
I've read conflicting definitions of what happens to the force between quarks as they're pulled apart. Do the gluon...
Feb4-09 11:37 PM
jambaugh
13 2,535
This may seem like a really obvious question to those that know it but... We looked at Yukawa's potential the other...
Feb3-09 09:08 AM
Ayame17
2 2,567
If I look at the energy of the hydrogen atom, the energy is proportional to the mass of the electron (or more...
Feb9-09 03:44 AM
malawi_glenn
3 1,932
Hey guys, I have a question for the particle physicists from an astronomer's point of view. First of all, with...
Feb6-09 05:33 AM
malawi_glenn
1 1,297
Hey, Im just woondering if anyone here have computed (numerically) the Breit-Wigner for a particle decay. I have to do...
Feb6-09 04:06 PM
clem
4 2,097
My understanding of the Higgs ocean comes from Briane Greene's The Fabric of the Cosmos. The book says that the Higgs...
Feb7-09 08:30 AM
Charlie G
6 1,478
Hi to everyone: Does anybody of you know when was the gluon detected?, and how do you detect...
Feb7-09 11:55 AM
Sideways
4 2,506
Can some kind person please explain why He-4 is so high and Li-6 is so low on the graph of binding energy per nucleon....
Feb6-09 04:23 PM
malawi_glenn
1 2,474
Hi everyone -- I have a question about the relation between the spin connection and the Christoffel connection. The...
Feb9-09 10:34 AM
lbrits
3 7,893
At the moment I am struggeling to find out about hidden sectors. So far I've been unable to find any in depth explicit...
Feb8-09 12:33 PM
MrHyde
2 1,620
First, this is my 1st post on physicsforums.com, so I'm not too sure I'm posting this in the right place, but guts...
Feb20-09 09:07 AM
clem
11 3,249
Would it be feasible theoretically to use a continuous endothermic fusion reaction as a high-energy heat sink? ...
Feb14-09 04:22 PM
duration
4 1,761
Can someone explain to me what Aether is? And what's the difference between the Higgs field and the aether? thanks
Feb28-09 09:23 AM
Naty1
6 2,163
The G-partiy of the pion is -1, which is rotation in isospin space around y-axis by angle \pi followed by...
Feb19-09 07:37 AM
malawi_glenn
1 1,773
All neutrinos are left handed and all anti neutrinos are right handed.so,it should be lorentz invariant and travel at...
Feb21-09 03:02 PM
Vanadium 50
7 3,101
Hello I am trying to understand how one sees that particles are propagated forward in time and antiparticles...
Feb26-09 09:34 AM
Deathless
10 2,696
I need some help in appreciating this consensus. We are told the following things: - that we have anti-electrons,...
Feb21-09 03:31 AM
Phrak
7 1,318
Hello, i tried to evaluate this particular little guy: \text{Tr} (\gamma ^0 p_\mu \gamma ^\mu \gamma ^0 q_\nu...
Feb19-09 03:35 PM
CarlB
4 2,991
Is it correct that Pu cannot be found in nature? What I mean acctually is that while Uranium can be mined, Pu from...
Feb21-09 03:57 PM
Astronuc
3 1,217
In Lorentz group in QFT, why the trace of the symmetric second-Rank tensor S^{\mu\nu} is defined as follows? ...
Feb25-09 04:15 AM
PRB147
5 2,902
well, thats the question. They both have the same queark structure. (udd). is it only their different bound states the...
Feb25-09 08:28 PM
praharmitra
3 2,176
Wikipedia said U-238 is better with capturing fast neutrons than slow neutrons. shouldn't it be the other way round? ...
Feb25-09 09:45 AM
malawi_glenn
3 2,704
Hi, can someone please help me? how do you calculate the binding enery of D-2 in MeV? and binding energy per...
Feb26-09 09:18 AM
malawi_glenn
1 1,517

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