
God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...

Jul1814 12:32 PM
ChrisVer

187 
61,771 
Before posting anything, please review the Physics Forums Global Guidelines.
If you are seeking help with a...

Feb2313 08:41 AM
ZapperZ

1 
25,760 
The graviton has a spin of 2. So, that means the graviton can take possible spins: 2, 1, 0, 1, 2 ? Just want to make...

Apr306 05:01 PM
samalkhaiat

2 
1,631 
what is meaning of parity.
why is the parity violated in weak interaction.
what is meaning of maximal violation of...

Apr806 05:26 AM
marlon

2 
1,537 
Im not too clear on how the scattering process may be used to probe the excitaion structure of the nucleus.
Can...

Apr1806 09:06 PM
drcrabs

2 
1,208 
I expect this to turn out to be an important nonstring QG paper this year.
http://arxiv.org/abs/grqc/0607014...

Jul606 07:41 PM
marcus

2 
1,461 
(first post on these forums). I am a nuclear physics sophomore and I come to you with what is, perhaps, a question I...

Apr1806 07:16 PM
Astronuc

2 
1,267 
As far as I know the usual extension of the standard model to include a massive neutrino implies a violation of the...

May1706 08:38 AM
hellfire

2 
4,344 
Hi All,
It seems a team of Aussie scientists at our one and only reactor have developed technology to use lasers to...

May2806 02:44 AM
matt.o

2 
1,652 
I just finished reading a book, The Quantum World, but have gone back and looked at some interesting and confusing...

May2906 08:39 AM
Meir Achuz

2 
2,039 
Hi,
Is it possible to induce decay in a radioactive element by introducing vast amounts of highenergy electrons in...

Jun1206 10:05 AM
Meir Achuz

2 
2,712 
Hi all,
I'm a rising sophomore in college and intern at SLAC. I'm trying to pick up a little bit more of a...

Jul806 01:39 AM
Haelfix

2 
2,431 
I am writing this on the curiosity of the results of a theoretical experiment. Imagine a photon moving thorugh space....

Jul1006 02:31 AM
Haelfix

2 
1,385 
Are the Higgs and the Graviton supposed to interact or are they two different particles from two different theories?

Aug2206 06:03 AM
Schrodinger's Dog

2 
5,409 
The Higgs boson was proposed to provide a mechanism for mass and is posited, as a field, to extend throughout the...

Aug606 03:50 AM
ZapperZ

2 
4,735 
Discovery of charm quark,
....
Pls add more ...

Aug1106 11:55 AM
BuckeyePhysicist

2 
1,834 
What is the relationship between pQCD and NRQCD?
Is it that pQCD is for high energy/shortdistance regime, e.g....

Aug2706 08:34 PM
BuckeyePhysicist

2 
2,806 
How is it not an exactly accurate understanding that QCD is a part/sector of the standard model of particle physics ?...

Aug2906 10:14 AM
arivero

2 
1,265 
Is there such program available for download from the Internet; a program in which you can simulate interactions...

Sep1906 02:06 PM
Burnsys

2 
3,777 
Hi all,
I am trying to study fission, and my crude understanding has some gaps.
a) U235 fissions when it absorbs...

Oct1406 04:01 PM
Astronuc

2 
14,662 
do massless particles not feel forces  other than gravity? The only massless particles I know are photons and...

Oct1806 04:25 AM
Severian

2 
1,363 
Hello all,
This is a thought experiment I have been tangling with for quite some time now and still cannot find...

Oct2206 04:48 AM
Writersblock

2 
1,469 
what is pde ?
in terms of the formula , and in general so i can picture it in my mind so to speak.

Nov2306 07:43 AM
michealsmith

2 
1,615 
Here are the publications of Ed Witten before 1980. I have used a small typeface for non single author publications....

Nov2706 02:02 PM
arivero

2 
2,393 
Any recommendation? I have found this one very spectacular:
hepph/0404270
Eberhard Klempt
Glueballs, Hybrids,...

Nov2706 11:47 AM
arivero

2 
1,859 
hey all,
in the study of "massless particles" such as the electron and the and the positron. in beta decay (beta...

Dec306 04:56 PM
taylaron

2 
8,940 
Dear PF,
I would like to thank you for existence of Physics forums since it appears very helpful.
Dear PF,
I was...

Jan507 07:04 PM
AlphaNumeric

2 
3,344 
I was reading this thread on "representation and field theory" under
physics > quatnum physics...

Jan1107 07:32 PM
mjsd

2 
4,078 
I cant quite understand critical mass. They say in a fission bomb they have to seperate two blocks of fissile Uranium...

Jan2007 11:56 PM
Gruppenpest

2 
2,337 
Can anyone explain how to interpret Heisenberg's relation Delta(E)*Delta(t)>=hbar in case of "annihilation" and or...

Jan2607 09:05 PM
Gib Z

2 
2,854 
I recently purchased a new book that reviews most historical models of the atomic nucleus:...

Feb1207 11:21 AM
CarlB

2 
2,838 
PlasmaAssisted Cutting (PAC) rounds
Hello everybody. I have a conceptual idea for a futuristic plasmabased weapon...

Feb1607 11:03 AM
PAC

2 
2,318 
Hi!
Any idea of how to calculate alpha_s (strong coupling constant) from jet multiplicities, that means using (1+1)...

Mar607 02:04 AM
serleon

2 
2,166 
Hi,
Could someone briefly explain Cabibbo suppression to me? I can't seem to find any info on it. Is it like OZI...

Mar1807 09:03 PM
Joe1

2 
2,952 
Could somebody please tell me a workable definition of the term "chiral theory" , and also explain its significance?...

May407 11:23 AM
nrqed

2 
1,822 
When neutrons come together energy is emitted.If there are a lot of neutrons close together in a ball,will the energy...

Apr1307 10:14 PM
Jonny_trigonometry

2 
1,519 
How would one know in general, whether an original gauge symmetry in the theory is still gauge symmetrical after...

Apr1707 07:10 PM
touqra

2 
5,390 
Hi all,
Why is the beta decay graph( no. of Beta particle vs Kinetic energy) a curve(or sort of bell shape). I...

Apr2207 06:36 PM
Delzac

2 
2,252 
in nuclear fusion, 2 nuclei join to make one correct,
therefore there is a loss of mass and energy, that energy...

Apr2707 10:49 AM
Hypochondriac

2 
1,557 
Dominant decays of W/Z bosons are quark aintiquark pairs which decay into jets of hadrons.
But how can a quark...

May1107 11:02 PM
ihtw

2 
2,671 
Can anyone refer me to some webpages where elementary matrix treatment to charged beam kinematics and optics can be...

May1207 09:24 PM
neelakash

2 
1,497 
Hi, I'm doing some work on DVCS and was wondering if anyone could better explain the link between FF's, PDFs, Compton...

May2507 05:28 PM
humanino

2 
1,241 