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

Jul1814 12:32 PM
ChrisVer

187 
50,758 
Before posting anything, please review the Physics Forums Global Guidelines.
If you are seeking help with a...

Feb2313 08:41 AM
ZapperZ

1 
24,051 
Hello, if someone could enlighten me I'd be most grateful.
Also, if anybody could point me in the direction of...

Mar111 05:25 AM
mmaa

22 
4,484 
I do not know if he is going, but Carl happens to have a 25 min talk allocated next Wednesday, before Koide's talk:
...

Jul1207 01:32 PM
arivero

40 
4,480 
I'm new to quantium physics but taking an interesting and trying to read more every day.
I have a bit of a silly...

Jun1105 09:08 AM
James Jackson

5 
4,474 
With the recent announcement at Cern there have been many video clips published describing the Higgs field. They show...

Aug1212 07:11 AM
Vanadium 50

39 
4,473 
Im trying to use the Bethe formula (http://en.wikipedia.org/wiki/Bethe_formula) to find dE/dx for a particle through a...

Jul209 04:05 PM
humanino

3 
4,455 
It is well know that massless spin1 gauge bosons have two spin states s³=+1 and s³=1. There are two independent...

May1811 05:01 PM
tom.stoer

29 
4,455 
Today my freind sent me a vid showing nuclear explosions and I was wondering what makes the huge explosion...
I...

Jul2006 09:03 PM
Astronuc

8 
4,444 
If anyone can help me with this question I'd be greatly appreciative....
Here's what I think I understand:
Nuclear...

Jul1308 11:25 PM
pfalk

3 
4,444 
Hi,
I thought pions were assigned parity of 1, but how then can the Pi0 decay into two photons with parity 1?? ...

Mar1807 05:46 PM
Joe1

5 
4,433 
Hi guys
First of all apologies if my question appears naive or simplistic  new to this field.
I have read that...

Feb2108 01:10 PM
humanino

4 
4,430 
Hello everybody,
I have to calculate the matrix element of the process gg>ttbar>lnub lnub (ttbar dileptonic...

May1507 08:31 AM
pierrechevalier

0 
4,425 
The Brookhaven National Laboratory's website has a news item on 'Hot Quark Soup' which seems to mean quarkgluon...

Mar310 05:00 PM
kulmalukko

4 
4,424 
I read this in a paper: Suppose there is a theory describing fermions transforming nontrivially under SU(3) gauge...

Nov2307 09:36 PM
blechman

2 
4,421 
I saw a video where a professor said
"So you do it by ... using e=mc^{2} ... you collide some protons at huge...

Jul212 10:21 AM
mfb

32 
4,421 
Based on this page: http://en.wikipedia.org/wiki/Fundamental_interaction
How do photon, gluons, w and z bosons, and...

Oct1507 04:35 PM
ZapperZ

23 
4,415 
Can buckyballs compress hydrogen into highdensity metallic form?
...

Apr2908 04:54 PM
mheslep

3 
4,414 
Hey all,
I am currently revising for my Physics mock but i can't get my head around high energy electron...

Dec2706 04:31 PM
Edgardo

6 
4,405 
So I've been playing around with different electroweak lagrangians (sourceless, higgsless, unbroken, broken, etc), and...

Sep3010 03:46 PM
michael879

30 
4,404 
Ummm...I don't know if this is the best section for this... but... it is said that a negetive energy can be created...

Oct205 06:55 PM
robousy

23 
4,397 
Basic question, but nevertheless.
In a nonAbelian gauge theory, the fermions transform in the fundamental...

Nov610 06:47 PM
tom.stoer

5 
4,394 
What exactly are neutrinos doing(their purpose)?

Jun707 12:23 PM
stochastic

16 
4,390 
Hi,
When we consider the two neutrino mixing case, we have the matrix that converts between them as given below
...

Oct1711 06:55 AM
McLaren Rulez

16 
4,387 
Can we calculate the difference in mass between a Proton and Neutron?
If so, how?

Nov1610 08:06 PM
Passionflower

24 
4,380 
I've heard quite abit of things about bosons and am quite confused. The biggest thing which distinguishes fermions...

Jul1705 04:13 PM
Rade

34 
4,376 
Hi everyone! Can somebody briefly explain me what the GIM Mechanism (Glashow, Iliopoulos, and Maiani) is and why does...

Sep2409 10:57 AM
humanino

1 
4,375 
Hi, I have a puzzle about the hierarchy problem of higgs mass.
I don't understand why delta m is much larger than m....

Mar1804 04:38 AM
Haelfix

5 
4,368 
What I'm looking to understand is why fission and or fusion result in the release of energy.
I understand that:
...

Nov909 05:05 PM
Frame Dragger

6 
4,367 
While studying particle physics, i saw that the range formula is the integration dE/(dE/dx) but as you know that there...

Dec2609 12:51 PM
Bob S

2 
4,367 
Does anyone know how many there are, also how many are just thoeretical. We know of the proton, neutron, and election,...

Sep3004 04:34 PM
Mk

4 
4,364 
I keep on hearing that there are hundreds of hadrons, or even more ambiguous a zoo of hadrons, but for some reason...

Jan2511 11:12 PM
Max™

17 
4,352 
Hi,
I have been looking at the baryon decuplet for spin 3/2 baryons, and the octet for spin 1/2 baryons. Here is a...

Jan2810 02:56 PM
Vanadium 50

4 
4,348 
What does it mean to have a model that is SU(2)xU(1)? Does it have anything to do with the electroweak unification? I...

Dec907 11:32 AM
Magister

6 
4,336 
What is the estimate of the gravitron size and can someone explain why it must be spin 2
also what is the higgs...

Feb2207 11:59 AM
Mentz114

26 
4,333 
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 
4,320 
Are there laws forbidding that reaction? Which ones?
Thanks

Apr2311 05:44 PM
kloptok

14 
4,316 
Hi people: I keep reading one day that weak isospin is exactly conserved by all interactions; other days that...

Oct613 04:15 PM
Vanadium 50

9 
4,315 
Ive studied how chain reaction of protonproton powers the stars, I also know that protonproton fusion will convert...

Dec2010 12:59 AM
Deepak247

11 
4,313 
I am trying to form some intuitive concept about the freefree absorption coefficient for a hydrogen plasma.
The...

Sep1207 05:28 PM
Ethelred

1 
4,309 
I have the following contour integral form of Wick's theorem (C indicating contraction):
C=\frac{1}{2 \pi i} \int...

May3109 07:03 PM
Super_Leunam

1 
4,304 
As I understand it, it's not yet possible to predict/calculate, from first principles, the halflives of radiactive...

Dec2311 06:51 PM
Vanadium 50

11 
4,291 