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

Feb2313 08:41 AM
ZapperZ

1 
25,923 
God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...

Jul1814 12:32 PM
ChrisVer

187 
62,467 
I meant to title it "Neutrons packed together"
Since neutrons can be packed together in a neutron star, would it be...

Apr2409 03:00 AM
Lantzelot

5 
1,776 
Is it possible that particle physics is over complicating theories about why all the matter in the early universe...

Apr1409 12:30 PM
Bob S

8 
2,060 
with this technique that has been used to detect quarks, are the results reproducable every time? or are there...

Apr1609 11:29 AM
Bob S

5 
1,364 
I wasnt quite sure where to put this thread. This question occurred to me while I was looking at the group theory of...

Apr909 09:27 AM
blechman

8 
1,672 
Is there any deep reason for introducing the electromagnetic field tensor other than the fact that Maxwell's equations...

Apr1409 03:41 PM
Hans de Vries

7 
2,826 
Im looking for a good resource that clearly explains the problem of Gribov ambiguity. In particular, I want to know...

Apr1409 07:56 PM
Haelfix

4 
2,055 
Is there a meaning to spin of particles if it was a (1+2)D rather than (1+3)D ?

Apr1609 04:19 PM
xepma

3 
1,424 
There doesnt seem to be anything in the theory of the standard model that says such a baryon couldnt exist, so why...

Apr909 09:33 AM
blechman

3 
1,096 
For scalar fields the propagator is just a number that represents the amplitude for a particle to go from one space...

Apr1109 05:28 AM
Hans de Vries

11 
1,616 
Kaluza Klein in 8 dimensions with the 4 dimensional compact space being the homogeneous space H=SU(3)/SU(2)xU(1), so...

Apr1309 10:46 AM
blechman

3 
1,274 
Hi everybody,
Basically, the title of this thread says it all.
My question is: Since all particles have an...

Apr1109 12:37 PM
blechman

6 
5,788 
How can a photon exist if it has no mass? I've always found this concept hard to grasp. (Rhyming not intended)

Apr1309 09:51 AM
malawi_glenn

4 
1,084 
I apologise if this question has been asked before, but I coudlnt find it, so:
Is there some deeper reason for...

Apr1509 10:49 AM
Bob_for_short

26 
3,443 
Could someone please explain what a multiplet is? I know that this has to do with the representation theory of Lie...

Apr1509 06:02 PM
humanino

3 
2,501 
Hey everyone,
Okay so usually drellyan is shown as interaction of p + p^bar: quark + antiquark > virtual photon...

Apr1909 03:23 PM
bomanfishwow

2 
2,037 
Considering the Atlas experiment, which are the basic theoretical decisions someone must take in order to create an...

Apr1509 02:54 PM
Vanadium 50

6 
2,404 
To prove:
F \overline{} \mu\nu = \nabla \overline{} \muA \overline{} \nu  \nabla \overline{} \nuA \overline{} \mu...

Apr1609 08:08 AM
xepma

1 
1,394 
I have been doing an experiment on muon lifetime, and am wondering if my count rate is correct.
A little about the...

Apr2009 08:39 PM
Bob S

10 
3,314 
If you have a spin system where integrating out spins leads to new interactions ie proliferation, what happens if you...

Apr2509 01:57 AM
Bobhawke

17 
5,531 
Hi,
I have a simple question related with asymptotic freedom.
Quarks behave as free particles at small distance...

Apr2009 01:12 PM
Bob_for_short

4 
1,773 
I have questions about the infinitesimal Lorentz transformation. but specifically about index manipulations.
...

Apr2009 01:36 AM
malawi_glenn

4 
3,629 
I need blibiography of analysis of the spectrum
I read in B. Green pp 113, but I no understand.

Apr2009 01:41 AM
malawi_glenn

1 
1,456 
I need find polynomials of scattering of 2 spinless particles. in a dual model the invariant amplitude.
I need find...

Apr1809 08:57 AM
ElianeUnifei

0 
988 
what are the reasons for why its believed that a smaller wave can have a higher ammount of energy? it seems...

Apr1909 01:08 AM
hurricane89

0 
1,067 
Hey, I am a complete noob to the particle physics realm and I am writing a paper on the Higgs Boson and Higgs field. ...

Apr2109 10:04 PM
WalkrTxsRangr

0 
882 
If the generators of the Lorentz spinor transformation can be expressed in terms of the gamma matrices (which can be...

Apr2409 06:10 PM
genneth

11 
3,962 
Neutrinos are almost massless, travel close to the speed of light, and pass through matter almost undisturbed. ...

Apr2409 12:11 AM
malawi_glenn

16 
3,302 
independently these two points make sense but when you put them together it seems as if they should be consistent:...

Apr2409 06:00 PM
kashiark

4 
1,683 
I want know if have a procedure aesy of deduced the kinematic factor. I know the procedure of M.B. Green pp 420, but...

Apr2409 12:12 AM
malawi_glenn

1 
1,231 
Trying to study Betadecay, but can't seem to be able to tell the difference between the two. Can someone help?
...

Apr2809 06:50 PM
trv

6 
5,746 
Hi,
I have a question about this decay: \pi^ \rightarrow e^ \overline{\nu_e}
there is a factor:
1 ...

Apr2609 03:09 PM
clem

2 
1,752 
anyone know what research is being done in CP symmetry violations and Matter Antimatter Asymmetry currently?

Apr2709 04:04 PM
Parlyne

5 
2,014 
Has anybody heard of this? Apparently, extremely highfrequency and highintensity light can knock out electrons in...

Apr2509 01:08 AM
sanman

0 
1,012 
Is there a collection somewhere of particle interaction descriptions? For example, if I'm wondering what an...

Apr2709 05:00 AM
Tokipin

2 
1,132 
when do high energy photons become a paritcle/antiparticle pair?

May109 03:47 PM
kashiark

12 
2,475 
Hey I'm new to this forum, just want to say hi! I'm not sure if this is the rite place to put this but sry if i posted...

Apr2609 08:01 PM
kchkwan

6 
1,782 
(1)How does the nuclear reaction in a power plant differ, from the the one that occurs in a nuclear bomb?
(2)I...

Apr2709 01:15 AM
malawi_glenn

1 
1,497 
I'm trying to clarify the terms "nuclear effect" and "atomic effect".
Due to the synonymous use of nuclear and...

May209 09:15 PM
kashiark

3 
4,462 
This is probably a naive question, but I've been trying for awhile to figure it out myself and just don't have the...

May109 09:56 PM
sphere3

6 
2,321 
I have been invited to write a proposal for researching this:
>> The basic idea is to calculate, in first...

May209 12:42 AM
malawi_glenn

1 
1,334 