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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
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 61,799
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 25,768
Since the electron and the positron are indeed true "point charges" then why are the colliders able to make them...
Feb5-05 03:39 PM
humanino
2 1,188
Do proton's decay? and if so, what do they turn into? and can they decay when they are in a nucleus? I read a...
Feb8-05 07:12 PM
Astronuc
2 1,534
Suppose you have some thin film of pure carbon graphite sitting on some metal, like iron. Now we start irradiating...
Feb9-05 11:06 AM
arivero
2 1,493
Is there any current theory for the following oddities? 1. Quarks come in pairs (up,down). (charm,strange),...
Mar8-05 04:11 PM
nightcleaner
2 1,345
EP Wigner'paper: On Unitary Representations of the Inhomogeneous Lorentz Group thanks!!!!!!
Mar26-05 08:14 AM
dextercioby
2 2,777
Hi, does anyone know of something of length of order 10^-21 m? I need it for an assignment to describe the detection...
Mar30-05 11:35 PM
rayveldkamp
2 1,446
http://physicsweb.org/articles/news/9/7/8/1 Strangely enough, while it looks similar, the experiment is actually...
Jul18-05 06:57 PM
Hans de Vries
2 1,494
The ground state of the isotope of Technetium that has a mass number of 99 is denoted by Tc-99. The metastable state...
Apr15-05 11:49 AM
fsroberts
2 4,033
Announcement : Frank Wilczek is giving a talk tonight at the Ohio State University. This will be a great...
Apr26-05 11:31 AM
motai
2 1,620
How do we calculate degree of forbiddenness? Can someone do an example to show me?
May8-05 06:23 AM
Meir Achuz
2 1,984
We all know that time-ordering depends on the choice of Lorentz frame. So my question is somewhat obvious.... ...
Jun1-05 07:40 AM
Berislav
2 1,403
From the Alchemist Newsletter (Chemweb.com) An international team of researchers has produced a new isotope of...
Jul24-05 02:37 PM
Rade
2 2,630
is there exists radioactive compound, such as uranium compound with some other elements? does the bonding of atoms...
Jul6-05 09:48 PM
sniffer
2 8,068
This might be a dumb question, but in all my years of chemistry and physics studies I have never gotten an explanation...
Jul11-05 04:17 PM
Gokul43201
2 3,345
Does anybody know where to get the expected cross section for Z at the LHC (pp at 14 TeV)? (it would be great if you...
Jul13-05 10:55 AM
Norman
2 4,940
In the book "Gauge Theories of the strong, weak, and electromagnetic interactions" by Chris Quigg the calculus of the...
Jul28-05 11:51 AM
Igor_S
2 5,407
a while back, i think it was marlon who posted a great link on particle physics, a beginners type of tutorial, any1...
Aug15-05 09:05 AM
DB
2 1,148
in sampling about the flavor u,d,s ...we use the t3, t8 generators amd plot all the possible combinations of their...
Aug28-05 01:36 PM
arivero
2 1,890
I would like to know if there is any logical/mathematical explanation as to why the speed of light cant be greater...
Aug28-05 11:29 AM
cscott
2 1,139
why does an alpha particle have the smallest distance to an atom if it aprroaches the nucleus head on?
Aug31-05 10:49 PM
asdf1
2 1,931
hi, well i haven't got anything good on "gravitational behavior of proton and antiproton". i want it's recent...
Sep13-05 09:36 AM
swati saini
2 1,562
I have read about "Thompson Cross section for free electrons" My problem is there must be the other cross sections...
Sep13-05 01:17 PM
Ali Karaman
2 3,362
In pair production, an nucleus is needed to take away some momentum from the photon so momentum conservation is...
Sep16-05 03:48 PM
mathman
2 1,755
group theory is an integral part of particle physics and one needs a good understanding of this before one switches on...
Oct14-05 07:33 AM
preet0283
2 1,285
Beginners question : In GUTS what is the relevance of anomaly cancellation. Is it in some sense an axiom - like...
Oct25-05 01:08 AM
robousy
2 3,365
I noticed there were several ways for trying to solve that problem : 1) secretely leave them somewhere (seas,...)...
Oct29-05 09:50 PM
Haelfix
2 2,418
I want this paper "QCD and resonance physics. theoretical foundations" by M. A. Shifman, A. I. Vainshteinstar, filled...
Nov4-05 12:56 AM
Mk
2 1,340
Return of the Ether? - There are reasons to believe that the universe contains much unseen dark matter. If it...
Nov2-05 04:44 PM
Saul
2 2,647
My question is, if only from a real particle emitted and absorbed virtual photons that make vacuum-polarzation (decay...
Nov20-05 10:52 AM
Kruger
2 4,037
Is there a set wavelength for photons produced from antimatter reacting its matter equivalent, and if there is, what...
Dec22-05 07:20 PM
Astronuc
2 3,157
example: 2 protons collide and a down-antidown quark pair is created, giving a pi-plus meson, a neutron and a proton....
Jan17-06 02:48 PM
QueenFisher
2 1,340
I'm looking to analyse data in favour of neutrino oscillations for my masters project. I know John Bahcall has some on...
Feb6-06 06:14 PM
mattdown
2 1,651
What about U-236 makes it unstable? I know what happens to U-236, the fission and the release of neutrons and what...
Feb15-06 09:03 PM
CarlB
2 1,407
You'll have to excuse my ignorance I am fairly new to physics, having only the sort of predegree level of maths...
Feb17-06 09:24 AM
Schrodinger's Dog
2 1,241
one simple but complicated question me is roaming in my mind since many days.We know about force carrying particles...
Feb22-06 08:58 PM
jollygood
2 1,806
I'm having trouble understanding how the exchange of particles, wether it be in weak, Em, or Stong interactions, can...
Feb23-06 09:00 AM
Sneil
2 2,115
If the strong coupling goes to zero in the infrared... is there some scale at which it has the same value that the...
Feb27-06 05:52 AM
arivero
2 1,329
It is well known that photon is a quant of electromagnetic field. It is also well known that the electromagnetic field...
Mar2-06 05:01 PM
topsquark
2 1,363
Ok, I am giving a talk on nuclear power at the weekend, and a few questions have popped up that I am unsure about. ...
Mar8-06 04:07 PM
leila
2 1,094
This may be better suited for the nuclear engineering forum, so feel free to move it. In decay processes that involve...
Mar23-06 12:03 PM
Grogs
2 2,419

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