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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 26,177
God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...
Jul18-14 12:32 PM
187 63,385
with this technique that has been used to detect quarks, are the results reproducable every time? or are there...
Apr16-09 11:29 AM
Bob S
5 1,371
Is there a meaning to spin of particles if it was a (1+2)D rather than (1+3)D ?
Apr16-09 04:19 PM
3 1,431
I need find polynomials of scattering of 2 spinless particles. in a dual model the invariant amplitude. I need find...
Apr18-09 08:57 AM
0 991
what are the reasons for why its believed that a smaller wave can have a higher ammount of energy? it seems...
Apr19-09 01:08 AM
0 1,070
Hey everyone, Okay so usually drell-yan is shown as interaction of p + p^bar: quark + antiquark -> virtual photon...
Apr19-09 03:23 PM
2 2,057
I have questions about the infinitesimal Lorentz transformation. but specifically about index manipulations. ...
Apr20-09 01:36 AM
4 3,655
I need blibiography of analysis of the spectrum I read in B. Green pp 113, but I no understand.
Apr20-09 01:41 AM
1 1,464
Hi, I have a simple question related with asymptotic freedom. Quarks behave as free particles at small distance...
Apr20-09 01:12 PM
4 1,786
I have been doing an experiment on muon lifetime, and am wondering if my count rate is correct. A little about the...
Apr20-09 08:39 PM
Bob S
10 3,335
Hey, I am a complete noob to the particle physics realm and I am writing a paper on the Higgs Boson and Higgs field. ...
Apr21-09 10:04 PM
0 886
Neutrinos are almost massless, travel close to the speed of light, and pass through matter almost undisturbed. ...
Apr24-09 12:11 AM
16 3,344
I want know if have a procedure aesy of deduced the kinematic factor. I know the procedure of M.B. Green pp 420, but...
Apr24-09 12:12 AM
1 1,242
I meant to title it "Neutrons packed together" Since neutrons can be packed together in a neutron star, would it be...
Apr24-09 03:00 AM
5 1,785
independently these two points make sense but when you put them together it seems as if they should be consistent:...
Apr24-09 06:00 PM
4 1,698
If the generators of the Lorentz spinor transformation can be expressed in terms of the gamma matrices (which can be...
Apr24-09 06:10 PM
11 3,996
Has anybody heard of this? Apparently, extremely high-frequency and high-intensity light can knock out electrons in...
Apr25-09 01:08 AM
0 1,016
If you have a spin system where integrating out spins leads to new interactions ie proliferation, what happens if you...
Apr25-09 01:57 AM
17 5,565
Hi, I have a question about this decay: \pi^- \rightarrow e^- \overline{\nu_e} there is a factor: 1 -...
Apr26-09 03:09 PM
2 1,768
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...
Apr26-09 08:01 PM
6 1,795
(1)How does the nuclear reaction in a power plant differ, from the the one that occurs in a nuclear bomb? (2)I...
Apr27-09 01:15 AM
1 1,512
Is there a collection somewhere of particle interaction descriptions? For example, if I'm wondering what an...
Apr27-09 05:00 AM
2 1,141
anyone know what research is being done in CP symmetry violations and Matter Antimatter Asymmetry currently?
Apr27-09 04:04 PM
5 2,024
Trying to study Beta-decay, but can't seem to be able to tell the difference between the two. Can someone help? ...
Apr28-09 06:50 PM
6 5,805
when do high energy photons become a paritcle/antiparticle pair?
May1-09 03:47 PM
12 2,497
This is probably a naive question, but I've been trying for awhile to figure it out myself and just don't have the...
May1-09 09:56 PM
6 2,339
I have been invited to write a proposal for researching this: >> The basic idea is to calculate, in first...
May2-09 12:42 AM
1 1,337
I'm trying to clarify the terms "nuclear effect" and "atomic effect". Due to the synonymous use of nuclear and...
May2-09 09:15 PM
3 4,490
So what has to be right for a metal to release electrons when shot with a light? if you use more than whats needed...
May3-09 11:31 PM
5 2,682
I need to know the practical applications of the absorption of gamma rays in materials.
May4-09 12:48 AM
4 3,639
How do I calculate the mass absorption coeficient ao lead given the linear absorption coeficient and the density of...
May4-09 12:52 AM
2 1,638
I need help understanding the Higgs mechanism: what is the Higgs condensate, what is the Higgs boson, why do only the...
May5-09 01:21 AM
1 2,328
Hi, could someone please try and figure out where I'm going wrong here. This is a calculation for a collision between...
May5-09 07:41 AM
5 2,587
In beta decay, positron emission, how come the condition for decay is: M_p > M_d + 2m_e Thats: atomic mass of...
May5-09 05:01 PM
8 3,649
Since the 4-vector A couples to the conserved current j^\mu = \psi-bar gamma^\mu \psi in QED, k_\mu...
May6-09 04:52 PM
4 2,592
If the momenta on the three external legs p(incoming fermion), p'(outgoing fermion) and p-p' (photon) of a vertex...
May7-09 01:35 AM
3 2,225
Question leads on from others where s^1/2 = 200GeV mH = 70GeV EH = 91.5GeV and p = 59GeV, (three momentum). The...
May7-09 04:31 PM
3 1,524
hi e1, sorry for one, to bring a post this big, b4 I even introduced myself; originally, i made it for a different...
May7-09 09:52 PM
0 1,286
Hi All Just wondering why does deuterium fused with itself not make helium-4 - instead it makes a triton or a...
May8-09 07:54 AM
13 5,591
My table of nuclides has a column for Spin/Parity for the nuclides when applicable. It says it is the nuclei's total...
May8-09 04:56 PM
2 2,752
Back in the 40's Oppenhiemer and other scientist were trying to calculate the necessary amount of Uranium(I think...
May9-09 05:31 PM
0 1,286

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