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

Jul1814 12:32 PM
ChrisVer

187 
62,155 
Before posting anything, please review the Physics Forums Global Guidelines.
If you are seeking help with a...

Feb2313 08:41 AM
ZapperZ

1 
25,851 
I am trying to understand the concept of anomalies and the global or gauge symmetry breaking, i.e. the Lepton and...

Dec913 12:45 PM
ChrisVer

0 
1,033 
Hi all,
I'd like to know what if we have a scatteing process A+B > C > E+D,
what is the relation between the width...

Dec913 12:43 PM
RGevo

4 
1,072 
I'm working on an opensource textbook on special relativity. The text below is what I currently have on experimental...

Dec813 09:00 PM
jedishrfu

10 
1,429 
in a nutshell

Dec713 09:29 AM
bcrowell

5 
2,478 
There are something I don't get about the degrees of freedom(dof).
For massive dirac spinor, there are four complex...

Dec613 03:06 PM
karlzr

6 
1,378 
I am having some difficulties in understanding something I found. Speaking about CKM matrix for N quark generations......

Dec613 09:26 AM
ChrisVer

12 
1,318 
Hi all,
Could any one help for calculating the hadronc production cross section for example for
tree level : p p >...

Dec613 09:13 AM
ChrisVer

1 
1,063 
After playing around with possible charges for new fermionic fields, I came to the conclusion that ONLY the U(1) gauge...

Dec513 09:43 PM
dauto

15 
1,150 
I heard from a few sources that the Higgs Boson particle probably doesn't exist, is this true?
If so, what does...

Dec413 10:03 PM
nst.john

7 
1,194 
I am confused on an issue relating to gluons and mass. As I understand it, quarks don't actually have a lot of rest...

Dec413 11:56 AM
dauto

30 
2,189 
Hello,
I have read that above a certain temperature, the weak bosons become massless and become indistinguishable...

Dec313 02:22 PM
bapowell

9 
1,079 
I was playing around with a classical field treatment of the SM, and I came across something strange I was hoping...

Dec313 01:09 PM
ChrisVer

6 
837 
Hi all,
I'd like to know what is the integrated luminosity of CMS exp. Cern ?
Best,
S.

Dec313 12:39 PM
mfb

5 
833 
I was wondering if there are any theories that show how much mass the higgs field gives to each particle and why? I...

Dec313 03:47 AM
ChrisVer

2 
878 
What is best way to figure out which of these activation coils would yield a higher gamma flux:
27Al, 58Ni, and...

Dec213 01:27 PM
mfb

1 
653 
Hi all,
Having looked into the Higgs mechanism a bit (I am a physics undergrad, so my understanding is pretty basic...

Dec213 11:54 AM
michael879

6 
858 
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 
783 
Hi people, I've read some articles about the calculation of mass spectrum. But I'm not clear with this concept. Can...

Dec213 07:32 AM
K^2

13 
1,143 
can anyone explain me about the differences between color and strong force?Though there are four fundamental forces so...

Dec213 03:30 AM
Drakkith

4 
865 
Hi everyone, I am doing a final project on the title " fundamentals of neutrino physics". I wanted to raise some...

Dec113 04:36 PM
RGevo

4 
699 
Can the classical electromagnetic force between two arbitrarily moving electrons, described by the LienardWiechert EM...

Dec113 03:38 PM
meopemuk

1 
725 
I'm currently doing some research at the moment for my professor, and he gave me a list of things to look at. Before...

Dec113 01:11 AM
Simon Bridge

3 
592 
I was given a sample, that it is suppossed to be a medium thickness Rhodium on top of an infinite silicon waffer. The...

Nov3013 05:07 PM
atha

2 
583 
Hello,
Empirically, the flux distribution of cosmic ray muons follow cos^2(θ) where θ is angle of incidence....

Nov3013 02:24 PM
phys_student1

4 
867 
Hi, I'm studying about Renormalization group.
I have a question about mass betafunction.
Usually, when we...

Nov3013 06:56 AM
andrien

9 
1,217 
As a physics student, I understand that α particles are emitted and are the same as helium atoms without electrons.
...

Nov2913 09:05 AM
Astronuc

13 
1,532 
Hi everybody,
i'm worried about some calculation. I have to write down the amplitude for the neutral Kaon...

Nov2913 05:51 AM
jkp

7 
3,654 
Dear Physics Forum,
As I understand it, the Higgs field is a quantum field that stretches throughout our universe....

Nov2813 10:42 AM
Mandragonia

48 
15,222 
Co60 is produced from Co50 through neutron activation. Neutron flux 10^18 nuetrons/(s*m^2). cross section is 20...

Nov2713 06:12 PM
mfb

3 
666 
I've been trying to get a grasp of what they ideal of antimatter is exactly. I do understand that it's the 'opposite'...

Nov2713 06:02 PM
Bill_K

6 
792 
In my class notes, the muon decay width is:
\Gamma_\mu=\frac{G^2_F m^5_\mu}{192\pi^3}
Yet, in Wikipedia (take...

Nov2613 05:51 AM
RGevo

5 
866 
I am not really sure whether this topic belongs here or not, but since my example will be a certain one I will proceed...

Nov2513 09:50 PM
George Jones

4 
816 
Hi, aside from nucleons is there any other stable (metastable doesn't count in this question) hadronic matter that...

Nov2513 09:03 AM
mfb

9 
767 
Hi all,
Let me ask about what is meant that
Narrow width approximation has an error ~ ## \Gamma/m ##, is it mean...

Nov2513 08:04 AM
Safinaz

0 
590 
Hi All,
I'm working through the theory of the strong interaction and I roughly follow it. However I have some...

Nov2513 06:54 AM
bapowell

1 
671 
Hello. I read about fast neutron therapy for cancer and the therapy uses a beam of high energy neutrons. How do you...

Nov2413 01:52 PM
anorred

2 
674 
Hi all,
why in SUSY we tend to use 2 components Weyl spinor field
not the ordinary Dirac filed ..
Regards,...

Nov2413 11:47 AM
dauto

3 
699 
Hello,
I am a layman who just read Sean Carroll's The Particle at the End of the Universe and I am trying to...

Nov2413 08:06 AM
mfb

7 
960 
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 
713 
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 
1,087 