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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
tom.stoer
178 34,625
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
ZapperZ
1 21,093
I have the following contour integral form of Wick's theorem (C indicating contraction): C=\frac{1}{2 \pi i} \int...
May31-09 07:03 PM
Super_Leunam
1 4,217
Hello, how do the angular distributions of Bhabha Scattering e^+ e^- \Rightarrow e^+ e^- and Muon pair...
Feb7-09 12:28 PM
Sideways
1 4,149
Can some kind person please explain why He-4 is so high and Li-6 is so low on the graph of binding energy per nucleon....
Feb6-09 04:23 PM
malawi_glenn
1 2,341
The G-partiy of the pion is -1, which is rotation in isospin space around y-axis by angle \pi followed by...
Feb19-09 07:37 AM
malawi_glenn
1 1,670
Im trying to make a partical excelerator for school using - ions but i cant find any b prints or any one who can help...
Mar2-09 01:26 PM
Bob S
1 1,871
Hi, can someone please help me? how do you calculate the binding enery of D-2 in MeV? and binding energy per...
Feb26-09 09:18 AM
malawi_glenn
1 1,454
I have heard many people use the term power counting before but I cant find any explanation of what it means. All I...
Mar2-09 05:36 PM
distanceless
1 4,454
When I studied renormalisation for the Ising model the procedure was to sum over every second spin and then find a new...
Mar5-09 04:53 AM
genneth
1 1,020
I have been going through some papers on lattice QCD lately, and many of them mention "topological charge". I was...
Mar6-09 10:12 PM
humanino
1 5,117
i cant seem to find any straightforward descriptions of it for why+when its needed. Plus im really confused as to how...
Mar7-09 05:29 AM
malawi_glenn
1 1,203
Hello all, lets think we have a segmented gamma-ray detector. when a gamma-ray interacts several segment of the...
Mar12-09 02:50 PM
Bob S
1 1,323
Hi, I've been measuring the flux of cosmic ray muons as a function of zenith angles. I have calculated the flux but do...
Mar17-09 05:02 AM
Vanadium 50
1 1,387
Hello! I was wondering if someone could help me with a problem of units! I'm currently deriving probability...
Mar16-09 09:33 AM
clem
1 1,874
Hello, I looked around before and could not find an answer to this question. So given the reaction neutron +...
Mar17-09 09:46 PM
hamster143
1 3,787
I have never really understood the approximate 'Custodial symmetry' in the Standard Model. I've seen it being...
Mar22-09 12:25 PM
blechman
1 3,490
So i was sitting here thinking about plasma. I started to wonder, if we create some plasma, lets assume we have it...
Mar23-09 02:18 PM
alexgmcm
1 944
Hello, As I have learned Carbon, uranium & other elements of radioactive nature are now used for dating how old an...
Mar24-09 03:00 PM
alxm
1 1,547
I have completed an experiment to measure the decay rate of an isotope, and I am trying to estimate uncertainties. ...
Apr6-09 12:11 PM
Bob S
1 1,788
To prove: F \overline{} \mu\nu = \nabla \overline{} \muA \overline{} \nu - \nabla \overline{} \nuA \overline{} \mu...
Apr16-09 08:08 AM
xepma
1 1,333
I need blibiography of analysis of the spectrum I read in B. Green pp 113, but I no understand.
Apr20-09 01:41 AM
malawi_glenn
1 1,328
I want deduc vertex of the lagrangian, but I not know how?
May10-09 05:16 AM
kuon
1 1,476
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
malawi_glenn
1 1,070
(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
malawi_glenn
1 1,356
I have been invited to write a proposal for researching this: >> The basic idea is to calculate, in first...
May2-09 12:42 AM
malawi_glenn
1 1,291
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
malawi_glenn
1 2,185
Question in title. Indeed, how are any particle masses determined? And especially quarks, since they have the added...
May10-09 02:21 AM
genneth
1 1,285
hi, I am a PhD student and I'm looking for a course or resources on the hadronic jets and the models used to deal...
May13-09 03:10 PM
blechman
1 1,280
The nuclear shell model is based on the shell model for electrons, and in the electron shell model, lasing is possible...
May23-09 07:04 AM
Bob_for_short
1 1,128
Suppose an antimatter at lower energy(K.E) collides with a matter in higher energy then what will be the output.
Jun12-09 01:45 PM
malawi_glenn
1 927
Can antimatter(positron) can be converted into a matter(electron) . If yes what other particles are created in that...
Jun12-09 03:54 PM
Bob S
1 843
Hi all, is anybody familiar with (QED for simplicity) radiative corrections for absolute cross section measurements...
Jun26-09 07:18 AM
Bob_for_short
1 1,061
Im trying to find the number of delta rays though a material and am having some trouble with the units, can anyone...
Jun25-09 07:17 PM
Bob S
1 1,039
How do protons and neutrons behave in nucleus? Is they just sit where? Or move some how? or maybe jei form some form...
Jun29-09 05:01 AM
malawi_glenn
1 723
I'm working on a research project involving calculations about various aspects of electron storage rings and have come...
Jun29-09 08:46 PM
Bob S
1 1,165
If I look up how the mass of the electron runs with energy between low energy and the Planck energy due to...
Jul6-09 05:38 AM
malawi_glenn
1 995
consider deep inelastic scattering of e-p.assuming that a graviton acts as a propogater in this interaction how would...
Jul7-09 07:17 AM
humanino
1 909
I know that there are many reasons why SU(2) can't be the electroweak gauge group, but I want to have some...
Jul9-09 01:05 PM
Avodyne
1 1,673
How can I explain this assymetry? I mark this assymetry with bold in the graph. This graph is depending potential...
Jul11-09 08:59 AM
malawi_glenn
1 2,080
hello I would like to know the frequency width of a decaying axion Lets say the axion has a mass of 10^-6 eV and it...
Jul14-09 03:00 PM
hamster143
1 1,476
i have attached two pages from a research paper.can someone interpret the mathematics in them or provide link that...
Jul13-09 06:42 AM
malawi_glenn
1 817

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