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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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Jan16-12 Greg Bernhardt
rules Sticky Thread Pinned: Forum Rules
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Feb23-13 08:41 AM
1 25,162
God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...
Jul18-14 12:32 PM
187 58,718
A proton and neutron "at rest" may stick to each other forming a deuterium and releasing some 2.2 MeV energy but what...
Jan13-11 09:02 AM
1 759
At high energies electromagnetic force and weak force merge in one force. There is difference between strength of EM...
Oct26-10 02:26 PM
0 760
Consider the usual phi^4 theory, when we derive the Lehmann-Kallen representation of the propagator, by inserting a...
Oct5-10 07:08 PM
0 761
Does the shape of the Higgs potential change if the energy of the vacuum changes? According to Wikipedia, If a...
Apr4-13 07:28 AM
0 761
Can anyone walk me through this calculation? I'm not completely sure how to do it (merely a student). So is this...
Nov22-09 04:48 AM
Vanadium 50
1 762
Hi all, Has any one know how to calculate the loop function of Higgs decay to photons/ gluons by t quark , or a...
Apr13-13 04:53 PM
4 763
Hi Folks -- can anyone direct me to a table online which lists the wavefunctions for the hadrons in terms of their...
Oct28-13 01:18 PM
4 763
At the beginning of cpt 9, Griffiths states that massive bosons have three polarization states (m_s = 1, 0, -1), but...
Feb3-13 12:30 PM
1 764
The LEP collider operated at a maximum of 209 GeV. Could it have been used to confirm the existence of the 125.3 GeV...
Jul9-12 02:18 PM
3 764
Weak interactions allow supernova core electrons and protons to convert to neutrons and neutrinos allowing (under the...
Mar2-14 04:28 PM
Vanadium 50
1 765
did feynman unify special relativity with QM or was it mostly a group effort and he just made some important...
Jul10-12 05:05 AM
Dead Boss
4 766
I'm trying to calculate the symmetry factor in this diagram. I'm calculating in a way expanding the interaction...
Dec7-12 07:20 AM
0 766
Hi all, I was wondering, is this scattering process even possible? Since we cannot mix the two neutrinos on one...
Nov4-12 07:18 AM
1 767
I have some questions about the matrix <0|j^{\mu}_5|\pi(p)>=if_{\pi}p^{\mu} 1.Pi is a psuedoscalar particle, but...
Mar13-13 11:13 AM
1 767
I don't know how (1.10) pops up and why the ##T^a##s satisfy the Lie algebra. Is there any physical intuition? Any...
Mar14-13 10:58 PM
1 767
Q.) What would happen if a *reverse-Tokamak* was created, thus reversing the electromagnets to a negative charge and...
Jan14-11 02:14 PM
1 769
hi folks, readingthis post: I was wondering why...
Feb8-10 11:46 AM
1 770
What is the Higgs particle and what does it do for us? How will LHC detect it? What is the signature? Thanks.
Mar29-10 09:57 PM
3 771
I am doing a research on activation radionuclides resulting from thermal neutron(2200 m*s-1 or 0.0253eV) capture. The...
Apr28-13 08:14 PM
4 771
Dear Forum : I'm looking for proton-proton inelastic cross section in MeV. There are lots of results in GeV, TeV....
Feb8-14 04:49 PM
6 771
Hi I am loking for those who is doing the reseach on the neutrino physics throughout the world so that we may have...
Jul15-09 02:37 AM
0 772
Hi every one, This time i am studying Quantum field theory and some times we call also high energy physics. But when...
Dec2-13 07:41 AM
2 772
Hello All I am laymen, but have keen and agile mind. I would like to ask your help in answering certain...
Nov12-09 02:49 PM
0 773
HERA-B used silicon microstrip detectors for their vertex detector. Behind each two sided detector with strips in x-...
Feb16-10 01:07 AM
Vanadium 50
1 774
Hi there, I have little question: reading zee 2nd edition, I.8 (pag 64) i came up with this: start with <k_1...
Jan20-11 12:39 PM
0 774
The Polyakov action has three symmetries, namely; Poincare, reparametrization and Weyl. Using the reparametrization...
May19-11 12:44 PM
Cesar Damian
0 775
Feynman diagrams is the standard for calculate the probability of nuclear reactions fo particles, but, when we want...
May8-13 09:06 AM
5 775
I've been trying to get a grasp of what they ideal of antimatter is exactly. I do understand that it's the 'opposite'...
Nov27-13 06:02 PM
6 775
If two protons collide at the LHC and a quark from each undergo a weak interaction together to form a W/Z boson, then...
Jan9-13 07:20 PM
Vanadium 50
3 776
After all, high energy neutrino astronomy seems to have been born! Ice Cube reported yesterday the measurement of 28...
May15-13 07:13 PM
0 777
I have just learned from nice article ...
Dec21-13 04:17 PM
2 777
This is related to a homework problem but I want to understand it as well. How can a proton break up into a positron...
Apr16-14 11:14 AM
3 777
When two deuterium nuclei are shot at each other they have some probability of fusing into a He nuclei. At the start...
Jan14-12 01:39 PM
0 778
spin and mass of neutrino,
Feb25-11 11:18 PM
4 779
At school I was taught that when any matter particle is accelerated until it almost reaches light speed, its mass...
Jul7-12 02:07 PM
1 779
I was listening to this radio program (Google: In Our Time Antimatter) and they kept saying that when an electron and...
Jan28-14 03:45 PM
6 779
Hi, I am looking into symmetry breaking and how it (may have) affected the photon/baryon ratio in the primordial...
Mar29-14 07:53 AM
5 779
Is anyone here familiar (more or less) with the new type of telescope called IACT, Imaging Air Cherenkov Telescope. ...
Sep16-09 12:59 AM
Vanadium 50
1 780
I can't seem to find one, but does anyone have a reference to the fourvector polarizations for a massive vector...
Jun13-13 12:43 PM
0 780
why the topological term in gauge theory, ε_{\mu\nu ρσ}F^{\mu \nu} F^{ρσ} ,is scale-independent?
Jun24-14 06:20 AM
7 780

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