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High Energy, Nuclear, Particle Physics

- Properties, relationships, and interactions of subatomic particles. Exp. & theo. physics of nuclei & elementary particles
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God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...
Jul11-12 01:13 AM
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Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Feb23-13 08:41 AM
1 21,131
Why is there a mass defect in the nucleus? I think about mass defect in this way - A comparatively unstable...
Apr28-12 07:48 AM
6 1,713
Has anyone got good pointed in higgs models beyond the minimal? The PDG review is too small for my taste. From...
May28-04 01:13 PM
1 1,712
Hi, I'm a total layperson, haven't taken a physics class since AP in high school. Trying to figure some stuff out...
Mar10-11 07:47 AM
1 1,712
Does a particle annihilate only with its corresponding antiparticle,or with any anti particle?Also,as a photon is its...
Jan9-04 09:10 PM
6 1,711
Hello, I have a couple of questions that have been confusing me for a while: I read that quarks propagate as mass...
Oct5-07 02:09 PM
5 1,711
Is the strong force (carried) by elemenary particles or does this force exsist every where in the universe, so that no...
Jan19-08 05:13 AM
7 1,711
Hello guys, can you help me on this question: What accounts most for the spin of protons? I think the quarks only...
Jun8-07 10:22 AM
9 1,710
Hi, Does anyone know how to calculate this quantity: <DeltaH_i(0)*DeltaH_j(t)>/<DeltaH_i(0)*DeltaH_i(0)>, where...
Jun2-08 07:14 PM
0 1,710
I want to know about the thresholds of particles observed when colliding two matter particles together in fermilab or...
Feb12-11 11:23 AM
4 1,710
Hi, we know that we can find the radius and energy of the orbits of why is it so that we cannot...
May15-07 04:31 AM
1 1,709
I was wondering at the remarkable fact that when an atom has an extra electron it is then possible to apply forces to...
Sep17-10 01:02 AM
Vanadium 50
3 1,709
So the way I understand it is that certain particles move through the Higgs field and encounter no resistance, giving...
Aug13-12 10:26 AM
9 1,709
How do we determine the magnitude of the nuclear force acting on the nucleus of an atom?
Apr1-05 01:28 AM
7 1,708
Some elementary particles in Standard Model are grouped into doublets, e. g. electron and e-neutrino (both left). As...
Apr3-06 12:05 PM
5 1,708
my question is can we have reaction that has only the nucleus by separating the electron cloud and why we have in...
Apr14-08 04:04 PM
6 1,708
wats the cause of the slight preponderance of matter on antimatter at the beginning of times,(big bang primordial...
May13-09 03:40 PM
7 1,708
we all know of positive / negative mass, could the theorised "Dark Matter" actually be "Neutral" Mass? just a...
Jun2-10 04:26 PM
16 1,708
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...
Feb28-06 06:08 PM
0 1,707
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...
Sep30-07 09:03 AM
12 1,707
Hi, I was reading earlier today in Peskin about QED field strenght tensor: equation 15.15 and 15.16 \psi= \psi...
Dec16-08 12:16 PM
1 1,707
Question 1: I am aware the Higgs lies in a chiral supermultiplet, but I realized I don't have an intuitive idea of ...
Jan18-11 04:38 PM
4 1,707
I have a few questions: 1) The tensor product of two matrices is define by A \otimes B =\left(...
Jun2-09 02:55 AM
4 1,706
I got some problem about using of Flair program.Does any body know how to use it?If anyone know,please explain me and...
Oct18-09 11:03 AM
0 1,705
Peter Woit links to this terrific little paper on the arxiv: ...
Oct14-06 01:30 AM
1 1,704
Hi everybody! I thought I'd introduce myself. I have been lurking around on this forum for awhile now. Yes, I am a...
Feb15-08 03:01 PM
3 1,704
What CAUSES alpha, beta and gamma rays?
Sep13-10 03:12 PM
1 1,704
Why is it that neutrons evaporate from nuclei more easily than protons do? Intuitively, since protons are...
Dec21-12 01:00 AM
14 1,704
Is there any general method to construct the generators of a SU(n) group?
Apr14-04 01:18 PM
2 1,703
Hellow, i'd like same information about the Best unniversity n england t studies Nuclear Physics,Because i read that i...
Jul15-04 03:30 AM
3 1,703
What is it about the density of a substance that makes it more resistant to allowing radioactivity to pass through it?...
Sep8-04 03:01 PM
3 1,703
I still don't understand antisymmetry and fermions. Is the proton wavefunction equal to this: ...
Mar29-11 07:45 PM
7 1,703
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. ...
May12-11 08:46 PM
2 1,702
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...
May26-09 08:07 PM
7 1,701
hi, i've never posted on here before but would appreciate any help given for this question. The scattering term...
Feb8-11 03:33 PM
1 1,700
I wish to know Wood Saxon potential - the basic idea and how that can be applied for bound systems of particles....
Sep13-11 08:45 PM
0 1,700
Hello, I'm a bit unclear on how the EM, weak, and strong forces can change the flavor of a quark. EM/Weak Force:...
Mar22-12 10:50 PM
2 1,700
Hello Folks! Though I have written my own paper (, I am still a novice in...
Aug29-06 09:30 AM
Meir Achuz
1 1,699
I have a proton and an antiproton scattering, via a pion exchange. The matrix element has the form: ...
Nov12-07 02:34 AM
3 1,699
First off, I'm not in any way anti-LHC. Quite the opposite to be honest. Even so, this speculative disaster scenario...
Aug25-10 03:54 PM
5 1,698
hello all gauge symmetries are redundencies of the description of a situation. Therefore they are not real...
Nov23-08 08:50 PM
9 1,697

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