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Feb2313 08:41 AM
ZapperZ

1 
21,131 
God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...

Jul1112 01:13 AM
tom.stoer

178 
34,717 
The problem is showing
(□+m^2)<0 T(∅(x)∅(y)) 0> = δ^4 (xy)
I know that it is relavent to Green's function,...

Nov1213 09:34 AM
ehms

2 
1,440 
For the electron, wiki lists its magnetic moment as −1.00115965218076(27) μB. It does not list it for the Muon or...

Nov2313 02:35 AM
lpetrich

6 
921 
I was reading this recent Scientific american article wich I found interesting, and was spurred on by it to ask a...

Nov913 07:04 AM
dauto

13 
1,410 
Hello, I have had this question for awhile now. What is the difference a delta baryon and a nucleon? they seem to have...

Nov913 04:34 AM
Superposed_Cat

2 
821 
Hi
Just a quick question that I have been wondering about ... how do nucleons fill energy levels, and what is the...

Nov813 06:26 AM
K^2

1 
833 
I confront an integration with the following form:
\int d^2{\vec q} \exp(a \vec{q}^{2})...

Nov1013 07:55 PM
phypar

2 
842 
Hello everyone, I have been wondering about the quantization of Maxwell's equation in free space, but now suppose that...

Nov1213 08:08 AM
NeroKid

6 
1,006 
Hello everyone,
I have read about the theoretical values of the Z boson decay partial width and how well they...

Nov1113 01:06 PM
Vanadium 50

6 
948 
I am studying QFT and got stuck on one question which may be simple. Why is structure constants (in Lie algebra) real...

Nov1113 10:05 AM
George Jones

3 
1,003 
Can anyone give or point me to a list of ALL continuous symmetries in the standard model, and the conserved currents...

Nov1813 09:39 PM
ChrisVer

3 
762 
I know that, given scalar A_{i} fields, the normal order is defined as :A_{1}...A_{n}: = \sum \prod A^{}_{i}\prod...

Nov1613 08:35 AM
Catria

0 
599 
Recently, I read a review on magnetic monopole published in late 1970s, wherein some conjectures of properties...

Nov1613 03:30 AM
Simon Bridge

1 
668 
Where would you use our new radiation detector?
We are a student team from the Vienna University of Economics and...

Nov2013 03:18 PM
mfb

5 
872 
Hi all,
Do any one know what is the spin correlation and what its relation to theNarrow Width Approximation.
...

Nov1713 04:11 PM
RGevo

1 
646 
I would like to ask you 2 completely separate questions... Since both concern the W,Zs I don't want to create more...

Nov2013 09:50 AM
dauto

14 
1,100 
The binding energy (BE) per nucleon for 235U is 7.6 Mev. The 235U undergoes a nuclear fission to produce two fragments...

Nov2113 07:48 AM
mfb

7 
848 
Hi all,
I try to understand the difference which can made by using or not using NWA ..
I have a process have...

Nov2213 02:09 PM
Safinaz

2 
543 
I'm curious to know what tends to be 'left over' after particle collisions at sites like LHC. I realize that many...

Nov2013 03:34 PM
mfb

5 
717 
Hello to everybody,
I need some explanation on how to use SDEF variables to define correctly a planar rectangular...

Nov2013 05:51 AM
damyoro

0 
564 
I read recently, that by separating two quarks, once a high enough energy has been introduced, new quark pairs will...

Nov2213 01:22 PM
mfb

11 
850 
Hi everyone,
my question seems pretty simple, but I couldn't find any answers. OK, so the neutrino flavour...

Nov2213 06:08 PM
BruceW

9 
714 
http://arxivweb3.library.cornell.edu/abs/1311.5238
"Evidence for HighEnergy Extraterrestrial Neutrinos at the...

Nov2213 08:53 PM
fzero

1 
600 
As I mentioned, I want to know if the cahrge distribution of nuclei has any influence on electronic properties. And...

Nov2313 12:37 PM
snorkack

2 
619 
Hi every one,
This time i am studying Quantum field theory and some times we call also high energy physics. But when...

Dec213 07:41 AM
K^2

2 
707 
Can someone explain in simple terms "K mixing level" and "K selectivity" in nuclear decay processes ? ...as it...

Dec1913 11:06 PM
Creator

4 
961 
I know that the strong force is viewed as the exchange of virtual pions between two nucleons, with the mass and range...

Dec1813 03:31 AM
Bill_K

8 
919 
Salutations, question:~wikipedia. I'm assuming that's because (correct me if i'm wrong) those particles would travel...

Dec1813 05:04 PM
kurros

13 
959 
Recently, I was thinking about spin and isospin. It's been a while since I've dealt with particle physics, so my...

Dec1713 08:15 AM
kith

0 
712 
Please, I'd need some help. Although I am not sure if this is again the correct thread, but since it concerns muon...

Dec2613 07:53 AM
Meir Achuz

1 
926 
i am actually calculating the nuclear spin of Sodium 23. Here we have 11 protons and 12 neutrons. Now both the nuclei...

Dec1913 07:35 AM
Vanadium 50

4 
716 
Hello everybody.
I am going to propose an experiment with a proton beam at CERN for a contest. This contest.
Also...

Dec1913 06:39 PM
mfb

1 
793 
In the Ïˆ below, there are 4 components for the Dirac spinnor times three possible color states for a total of 12...

Dec2413 08:16 AM
Spinnor

10 
1,011 
I have just learned from nice article
http://motls.blogspot.com/2013/12/edwardwittenwhateveryquantum.html
...

Dec2113 04:17 PM
fzero

2 
687 
Consider the Feynman diagram below from,
http://hyperphysics.phyastr.gsu.edu/hbase/particles/expar.html
where I...

Dec2113 05:24 PM
mfb

1 
757 
Hi....!
I was trying to understand the meaning of the binary Energy (Eb) ..
For example :
Imagine we have two...

Dec2513 10:38 AM
mfb

3 
748 
Why exactly is it that the Higgs field is not considered a fundamental force? Since the Higgs Boson has been confirmed...

Jan114 04:30 PM
kurros

6 
1,013 
Suppose we consider a proton where we set the electric charge of the three quarks towards zero. At this point I assume...

Jan214 07:22 PM
The_Duck

10 
883 
We say onshell and offshell mass of quarks. 1) What is the difference onshell and offshell mass of quarks. 2) At...

Jan114 06:54 PM
Vanadium 50

7 
747 
Hello,
I'm currently in my last year of high school and I'm doing a project about the higgs particle decaying to...

Jan114 06:24 PM
Vanadium 50

8 
692 
Hi all,
Is it not preferable to detect a particle at the LHC with final states of photons, that when I read
in...

Jan314 04:34 PM
mfb

1 
709 