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 
34,352 
Before posting anything, please review the Physics Forums Global Guidelines.
If you are seeking help with a...

Feb2313 08:41 AM
ZapperZ

1 
21,037 
Does a particle annihilate only with its corresponding antiparticle,or with any anti particle?Also,as a photon is its...

Jan904 09:10 PM
Orion1

6 
1,707 
Hello, I have a couple of questions that have been confusing me for a while:
I read that quarks propagate as mass...

Oct507 02:09 PM
malawi_glenn

5 
1,707 
Is the strong force (carried) by elemenary particles or does this force exsist every where in the universe, so that no...

Jan1908 05:13 AM
Rade

7 
1,707 
My question is: what does "manifest" Lorentz covariance means for a field theory, as opposed to simply Lorentz...

Nov2612 07:12 AM
haushofer

10 
1,707 
How do we determine the magnitude of the nuclear force acting on the nucleus of an atom?

Apr105 01:28 AM
sid_galt

7 
1,706 
So I heard a little rumor that Beta decays in certain isotopes release an electron at "ultrarelativistic" speeds. I...

Jun1810 10:44 PM
Yevgenia

9 
1,706 
Why is there a mass defect in the nucleus?
I think about mass defect in this way  A comparatively unstable...

Apr2812 07:48 AM
Astronuc

6 
1,706 
Some elementary particles in Standard Model are grouped into doublets, e. g. electron and eneutrino (both left). As...

Apr306 12:05 PM
nrqed

5 
1,705 
Hi,
we know that we can find the radius and energy of the orbits of hydrogen.now why is it so that we cannot...

May1507 04:31 AM
lalbatros

1 
1,705 
my question is can we have reaction that has only the nucleus by separating the electron cloud and why we have in...

Apr1408 04:04 PM
shelanachium

6 
1,705 
Hi, Does anyone know how to calculate this quantity: <DeltaH_i(0)*DeltaH_j(t)>/<DeltaH_i(0)*DeltaH_i(0)>, where...

Jun208 07:14 PM
unica

0 
1,705 
Hi, I was reading earlier today in Peskin about QED field strenght tensor:
equation 15.15 and 15.16
\psi= \psi...

Dec1608 12:16 PM
malawi_glenn

1 
1,705 
I have a few questions:
1) The tensor product of two matrices is define by
A \otimes B =\left(...

Jun209 02:55 AM
Bobhawke

4 
1,705 
I was wondering at the remarkable fact that when an atom has an extra electron it is then possible to apply forces to...

Sep1710 01:02 AM
Vanadium 50

3 
1,705 
we all know of positive / negative mass, could the theorised "Dark Matter" actually be "Neutral" Mass?
just a...

Jun210 04:26 PM
tom.stoer

16 
1,704 
Hello guys, can you help me on this question:
What accounts most for the spin of protons? I think the quarks only...

Jun807 10:22 AM
humanino

9 
1,703 
I got some problem about using of Flair program.Does any body know how to use it?If anyone know,please explain me and...

Oct1809 11:03 AM
parazit

0 
1,703 
Question 1: I am aware the Higgs lies in a chiral supermultiplet, but I realized I don't have an intuitive idea of
...

Jan1811 04:38 PM
lpetrich

4 
1,703 
Hi Folks
I made a mistake on a web page I created a while back and because I had nobody to help check my work the...

Sep3007 09:03 AM
pmb_phy

12 
1,702 
Can any one explain to me about parity and spin of nuclei or give me the site.example find the parity and spin of Ca...

Feb2806 06:08 PM
kidia

0 
1,701 
What CAUSES alpha, beta and gamma rays?

Sep1310 03:12 PM
mathman

1 
1,701 
I still don't understand antisymmetry and fermions.
Is the proton wavefunction equal to this:
...

Mar2911 07:45 PM
RedX

7 
1,701 
Is there any general method to construct the generators of a SU(n) group?

Apr1404 01:18 PM
mstrachan

2 
1,700 
Hellow, i'd like same information about the Best unniversity n england t studies Nuclear Physics,Because i read that i...

Jul1504 03:30 AM
humanino

3 
1,700 
What is it about the density of a substance that makes it more resistant to allowing radioactivity to pass through it?...

Sep804 03:01 PM
humanino

3 
1,700 
Peter Woit links to this terrific little paper on the arxiv:
...

Oct1406 01:30 AM
Haelfix

1 
1,699 
An electron has a negative charge and a proton has a positive charge, we say. Meaning that both are opposites of each...

Aug3007 03:31 PM
dextercioby

2 
1,699 
I have a proton and an antiproton scattering, via a pion exchange.
The matrix element has the form:
...

Nov1207 02:34 AM
metter

3 
1,699 
Hi everybody! I thought I'd introduce myself. I have been lurking around on this forum for awhile now. Yes, I am a...

Feb1508 03:01 PM
jamus

3 
1,699 
I've been searching online and in my qft books (im an early phd student) and I can't find a clear explanation. If you...

May2609 08:07 PM
nrqed

7 
1,699 
I'm not always on the same computer, often times I'm using my phone to look for answers when doing physics on the go. ...

May1211 08:46 PM
GDogg

2 
1,698 
So the way I understand it is that certain particles move through the Higgs field and encounter no resistance, giving...

Aug1312 10:26 AM
RagingHadron

9 
1,698 
hi,
i've never posted on here before but would appreciate any help given for this question.
The scattering term...

Feb811 03:33 PM
bigubau

1 
1,697 
I wish to know Wood Saxon potential  the basic idea and how that can be applied for bound systems of particles....

Sep1311 08:45 PM
apkrishna1963

0 
1,697 
Hello Folks!
Though I have written my own paper (http://arxiv.org/abs/math.DG/0605709), I am still a novice in...

Aug2906 09:30 AM
Meir Achuz

1 
1,696 
hello all
gauge symmetries are redundencies of the description of a situation. Therefore they are not real...

Nov2308 08:50 PM
julian

9 
1,694 
I want to know about the thresholds of particles observed when colliding two matter particles together in fermilab or...

Feb1211 11:23 AM
Deepak247

4 
1,694 
I've left particle physics after my diploma a few years ago so I am not familiar with all of the slang, anymore. My...

Jul3010 05:14 PM
nrqed

4 
1,693 
First off, I'm not in any way antiLHC. Quite the opposite to be honest. Even so, this speculative disaster scenario...

Aug2510 03:54 PM
malm1987

5 
1,693 
Hello,
I'm a bit unclear on how the EM, weak, and strong forces can change the flavor of a quark.
EM/Weak Force:...

Mar2212 10:50 PM
XSerenity

2 
1,693 