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If you are seeking help with a...

Feb2313 08:41 AM
ZapperZ

1 
25,755 
God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...

Jul1814 12:32 PM
ChrisVer

187 
61,745 
Hey, I've been a little confused on the concept of gravitons. I know that they are the messenger particle of the...

Mar709 03:16 PM
pallidin

10 
2,723 
Hello once again. I'm trying to understand the relation between the superspace representation of the SUSY generators...

Feb909 11:41 AM
JosephButler

5 
2,096 
Hey all, I am an undergraduate taking a particle physics class and we just learned that the EM force was caused by...

Feb909 10:49 AM
lbrits

2 
2,076 
Hello,
how do the angular distributions of Bhabha Scattering
e^+ e^ \Rightarrow e^+ e^
and Muon pair...

Feb709 12:28 PM
Sideways

1 
4,315 
Dear All,
I'm reading Georgi's text about Lie algebra, 2nd edition.
In chap 6, he introduced "Roots and...

Feb1609 05:22 AM
Atakor

7 
2,626 
If I look at the energy of the hydrogen atom, the energy is proportional to the mass of the electron (or more...

Feb909 03:44 AM
malawi_glenn

3 
1,922 
My understanding of the Higgs ocean comes from Briane Greene's The Fabric of the Cosmos. The book says that the Higgs...

Feb709 08:30 AM
Charlie G

6 
1,473 
Hi to everyone:
Does anybody of you know when was the gluon detected?, and how do you detect...

Feb709 11:55 AM
Sideways

4 
2,494 
Can some kind person please explain why He4 is so high and Li6 is so low on the graph of binding energy per nucleon....

Feb609 04:23 PM
malawi_glenn

1 
2,469 
Hi everyone  I have a question about the relation between the spin connection and the Christoffel connection.
The...

Feb909 10:34 AM
lbrits

3 
7,865 
At the moment I am struggeling to find out about hidden sectors. So far I've been unable to find any in depth explicit...

Feb809 12:33 PM
MrHyde

2 
1,613 
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...

Feb2009 09:07 AM
clem

11 
3,228 
Would it be feasible theoretically to use a continuous endothermic fusion reaction as a highenergy heat sink? ...

Feb1409 04:22 PM
duration

4 
1,751 
Imagine you have electron and positron (leptons) falling towards each other. The interaction between these two is...

Mar209 01:46 PM
Bob S

30 
3,739 
Can someone explain to me what Aether is? And what's the difference between the Higgs field and the aether?
thanks

Feb2809 09:23 AM
Naty1

6 
2,148 
Why in an linear accelerator, like the Cock Croft Walton accelerator, in which protons would strike a solid piece of...

Mar309 10:59 PM
Bob S

2 
3,318 
The Gpartiy of the pion is 1, which is rotation in isospin space around yaxis by angle \pi followed by...

Feb1909 07:37 AM
malawi_glenn

1 
1,767 
All neutrinos are left handed and all anti neutrinos are right handed.so,it should be lorentz invariant and travel at...

Feb2109 03:02 PM
Vanadium 50

7 
3,078 
Hello
I am trying to understand how one sees that particles are propagated forward in time and antiparticles...

Feb2609 09:34 AM
Deathless

10 
2,677 
I need some help in appreciating this consensus.
We are told the following things:
 that we have antielectrons,...

Feb2109 03:31 AM
Phrak

7 
1,310 
Hello, i tried to evaluate this particular little guy:
\text{Tr} (\gamma ^0 p_\mu \gamma ^\mu \gamma ^0 q_\nu...

Feb1909 03:35 PM
CarlB

4 
2,983 
I'm just learning renormalization in QFT and have a few basic questions:
1) It seems to me that renormalization has...

Mar109 02:59 PM
Bob_for_short

9 
3,274 
Is it correct that Pu cannot be found in nature?
What I mean acctually is that while Uranium can be mined, Pu from...

Feb2109 03:57 PM
Astronuc

3 
1,210 
Im trying to make a partical excelerator for school using  ions but i cant find any b prints or any one who can help...

Mar209 01:26 PM
Bob S

1 
1,967 
In Lorentz group in QFT, why the trace of the symmetric secondRank tensor S^{\mu\nu} is defined as follows?
...

Feb2509 04:15 AM
PRB147

5 
2,883 
Hi all,
I was wondering what effect does gravity have on a subatomic particle? I know that physicists have been...

Mar109 03:41 PM
Vanadium 50

8 
3,668 
well, thats the question. They both have the same queark structure. (udd). is it only their different bound states the...

Feb2509 08:28 PM
praharmitra

3 
2,165 
Wikipedia said U238 is better with capturing fast neutrons than slow neutrons. shouldn't it be the other way round? ...

Feb2509 09:45 AM
malawi_glenn

3 
2,687 
I understand that they are looking for, and are hopefully close to finding the Higgs Boson, either with the Tevatron...

Mar309 04:41 PM
Dusty_Matter

23 
3,033 
Hi, can someone please help me?
how do you calculate the binding enery of D2 in MeV? and binding energy per...

Feb2609 09:18 AM
malawi_glenn

1 
1,508 
Hey all,
I had a somewhat technical question concerning recent news events. My background in physics and mathematics...

Mar209 09:15 PM
hamster143

2 
1,978 
This is perhaps a stupid question but:
When we use natural units and set h=c=1, do we choose appropriate units so...

Mar309 10:43 AM
blechman

10 
2,287 
I have heard many people use the term power counting before but I cant find any explanation of what it means. All I...

Mar209 05:36 PM
distanceless

1 
4,693 
Context:
In betadecay the kinetic energy of the electron is continuous. This led Pauli to the conclusion, that the...

Mar309 12:04 PM
jtbell

3 
2,595 
When I studied renormalisation for the Ising model the procedure was to sum over every second spin and then find a new...

Mar509 04:53 AM
genneth

1 
1,061 
What is the minimal mass of a neutron star, if the semi empirical mass formula is used?

Mar609 06:57 AM
malawi_glenn

11 
3,204 
Hello,
It may not be the best place to ask but that is the best place I found :)
So I have been trying to...

Mar609 08:02 PM
hamster143

4 
2,783 
I have been going through some papers on lattice QCD lately, and many of them mention "topological charge". I was...

Mar609 10:12 PM
humanino

1 
5,434 
i cant seem to find any straightforward descriptions of it for why+when its needed. Plus im really confused as to how...

Mar709 05:29 AM
malawi_glenn

1 
1,320 
http://hyperphysics.phyastr.gsu.edu/hbase/Particles/lepton.html
how were these things measured+discovered? are any...

Mar709 06:04 AM
dangerbird

2 
1,541 