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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
ZapperZ
1 25,755
God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...
Jul18-14 12:32 PM
ChrisVer
187 61,745
When an electron is orbiting a proton, why is it not compelled to be attracted to the proton? Why doesn't it stick to...
Jul1-04 01:30 AM
elas
8 1,802
I am trying to do some plots for determining the range of higgs mass. Can somebody tell me how to plot higgs mass...
May20-12 01:40 PM
Imraan Pervez
6 1,686
When I opened up the "High Energy,Nuclear,Particle Physics" section, it was kind of like "Holy $#^*!!!- I don't know...
Jun24-14 12:44 PM
mfb
4 687
How is it possible to have a pion that is made up of a linear combination of quarks? I mean, what are the physical...
Jun21-07 02:52 PM
humanino
15 2,771
I was wondering what the different between pseudorapidity and rapidity was (pertaining to a high energy accelerator)....
Jul1-07 03:05 PM
Hans de Vries
5 4,585
I was wondering if there were any sites or if any one of your could explain cross section weighting relating to HEPP....
Jul3-07 02:04 PM
indigojoker
0 1,485
Hi all, I'm trying to teach myself high energy physics and was wondering if any one knew a good reference site on...
Apr22-08 01:09 PM
indigojoker
30 5,323
in HEP, what exactly is the definition of soft particle? also, why are branching fractions \Gamma in GeV instead of...
Apr4-08 09:39 AM
genneth
9 1,995
Is there a difference between (1-\gamma^5) and (1-\gamma_5) ? I see the two used interchangeably when...
Apr26-08 07:18 AM
Mr.Slava
6 1,846
Would anyone know of any textbook that has explicit calculations of cross section using intermediate vector boson...
Apr25-08 09:54 AM
nrqed
5 2,175
I am baffled by what exactly it means to have the following (ingoing, outgoing) lepton pair configuration: (0,\nu_L...
Apr23-08 07:02 AM
indigojoker
0 1,334
Co-60 is produced from Co-50 through neutron activation. Neutron flux 10^18 nuetrons/(s*m^2). cross section is 20...
Nov27-13 06:12 PM
mfb
3 664
Could someone please explain how the Feynman Lectures in Physics is relevant to a Penning Trap? :smile:
Jun8-05 01:57 PM
infinitetime
0 1,367
Hi, If we calculate the flux at a certain distance from a source of radiation by first neglecting the effect of...
Nov8-09 04:27 PM
Bob S
9 1,828
I am aware that there is strong evidence for the presence of quarks inside of protons and neutrons through the...
Oct27-09 09:33 AM
inflector
11 2,411
I've been reading about the T2K experiment where a "neutrino beam" is being sent from the J-PARC accelertor in Takio...
Nov27-09 09:58 PM
Bob S
9 1,460
I've been reading most of the threads here in particle physics forum. Recently, I noted a couple of threads started by...
Dec21-09 11:37 PM
humanino
17 2,978
I'm trying my best to learn particle physics and cosmology for the last year or so. One of the concepts I'm trying to...
Aug2-10 01:16 PM
The_Duck
33 6,321
Where does most of the heat energy in fission reactions come from? -Does it come from radiation emitted from...
Sep28-09 10:18 AM
QuantumPion
1 1,105
In a nuclear reaction, protons and neutrons are separated from each other. My question is, why can protons and...
Jul23-10 12:49 AM
tom.stoer
2 2,296
As a person with a very basic understanding of nuclear physics, I am curious about the source of energy in a fission...
Dec28-10 02:55 AM
Drakkith
2 899
It's a famous claim that spin-0, spin-1 and spin-2 fields are described by scalar, vector and second-rank tensor,...
Aug16-10 06:42 AM
bobloblaw
8 3,401
Consider the simplest \phi^4 with Z_2 breaking. Before the shift, \langle\phi\rangle=0 by symmetry. After the shift,...
Nov10-10 09:39 PM
ingenue
4 1,174
When people discuss the Schwinger model, sometimes they still call the electron field spin-1/2 and the EM field...
Sep29-10 12:16 AM
tom.stoer
1 1,293
Consider the usual phi^4 theory, when we derive the Lehmann-Kallen representation of the propagator, by inserting a...
Oct5-10 07:08 PM
ingenue
0 768
Three questions, In a femtosecond laser, or any laser for that matter, how is a pulse generated from noise? how do...
Jul29-14 02:11 PM
Greg Bernhardt
1 853
Hello, I have some basic questions that perhaps someone within the proper field might answer. I was wondering if...
Dec6-09 06:29 PM
inq1iam
0 1,071
Hello everyone !!! First of all, Quantum Field Theory is not my field of research. However, I have to investigate...
Sep2-13 03:28 AM
DarMM
4 1,471
Hey all, I am currently revising for my Physics mock but i can't get my head around high energy electron...
Dec27-06 04:31 PM
Edgardo
6 4,428
The quarks that make the proton are up, up and down with masses of around 2, 2 and 4 MeV/c^2 respectively. So, how...
May6-11 09:38 AM
tom.stoer
14 2,496
If the Higgs is responsible for the mass in the universe, but the Higgs itself has mass, then isn't that a little...
May13-11 01:08 PM
cello
5 1,778
Hi, i would like about the decay of positronium (a electron and a positron going around the center of mass) in 2...
Jan31-09 01:51 PM
Redbelly98
5 3,423
Has anyone out there read BR Martin's new book: "Nuclear and Particle Physics, An introduction" ?? There is no review...
Sep3-06 05:40 PM
Astronuc
1 3,563
I was wondering if someone could answer these questions? It is obvious that the forces due to electromagnetics are...
Dec30-06 08:48 AM
interested_learner
3 2,555
I was told that when electrons and positrons collide they produce 2 photons of 0.511MeV each. But what happens to the...
Mar25-05 10:58 AM
nrqed
5 6,486
Question. Does a stream of Electrons emitted in a Hard Vacuum Diode absorb light? If so what is the absorption...
Jan20-06 04:52 PM
ZapperZ
3 2,692
Are there any really good High Energy Particle Target Images that we can see that have good resolution of the...
Mar8-06 11:15 AM
Intuitive
0 1,243
I was just doing a little test and one question that I got wrong and can't seem to rationalise the supposed correct in...
Apr27-07 02:39 AM
CarlB
1 2,569
Could someone tell me if the quark has been experimentally proved to exist? I mean in a particle accelerator. Or...
May9-11 06:19 AM
Meir Achuz
17 6,737
Lately, I've heard that the scientists at Brookhaven National Lab were able to create a collision between gold ions...
Jun20-10 06:27 PM
rhody
11 7,177

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