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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 62,452
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 25,918
Having watched with interest the "progress" in theory since my retirement, I have come to the conclusion that it well...
Jan3-06 04:05 AM
Ernies
35 4,610
Now that Neutrinos have mass is it true the only zero mass particle is the photon?
Jan4-10 02:21 PM
humanino
27 4,608
Hi I was wondering why the W+ boson is decaying into following quarks: up + anti(down) charm + anti(strange) ...
May8-07 12:31 PM
mormonator_rm
6 4,607
unstable nucleus with excess neutrons turns to protons, emitting electrons and electron antineutrinos,in this case...
Nov17-07 10:58 PM
malawi_glenn
6 4,605
didn't know where to post this. Was wondering earlier why objects have mass so i googled it.. i'm in grade 12 so...
Mar12-08 11:56 AM
humanino
29 4,603
Hi all. I'm new to this forum, but I checked the FAQs and I think I'm in the right place to ask this: Is there just...
Jun18-08 02:08 AM
pmb_phy
4 4,593
http://www.symmetrymagazine.org/breaking/2010/08/23/the-strange-case-of-solar-flares-and-radioactive-elements/ I just...
Aug24-11 03:41 PM
Drakkith
13 4,591
Where can all the classic papers by the experimentalists that layed the foundation for nuclear physics be...
Nov12-06 12:26 PM
Gokul43201
4 4,587
Thanx to all who helped me with my first posts. Now on to bigger and better things! The Binding Energy Curve shows...
Aug23-07 12:31 PM
Potaire
15 4,586
That is, how many different states are there assuming you distinguish two particles as different if they have...
Feb25-10 12:36 PM
arivero
12 4,582
A relatively recent story about anti-matter being created by lightning caught my eye. ...
Oct9-11 05:20 PM
benb1990
14 4,581
Greetings to all I had some problems using MCNP5 for gamma shielding calculation. The original input file is from a...
Jul14-14 02:11 PM
salmankhan
14 4,580
With the recent announcement at Cern there have been many video clips published describing the Higgs field. They show...
Aug12-12 07:11 AM
Vanadium 50
39 4,573
Are there laws forbidding that reaction? Which ones? Thanks
Apr23-11 05:44 PM
kloptok
14 4,571
Hello, if someone could enlighten me I'd be most grateful. Also, if anybody could point me in the direction of...
Mar1-11 05:25 AM
mmaa
22 4,568
Can graviton possible act like gluon ball? Why not?
Jan11-09 06:56 PM
glueball8
25 4,566
If anyone can help me with this question I'd be greatly appreciative.... Here's what I think I understand: Nuclear...
Jul13-08 11:25 PM
pfalk
3 4,564
What exactly are neutrinos doing(their purpose)?
Jun7-07 12:23 PM
stochastic
16 4,556
I've been thinking about nuclear fusion process in the sun, and stumbled upon something weird: Basically, why there...
Jul3-09 06:58 PM
qraal
11 4,553
It is well know that massless spin-1 gauge bosons have two spin states sł=+1 and sł=-1. There are two independent...
May18-11 05:01 PM
tom.stoer
29 4,546
Hi friends, I have read that particles like neutrino have zero mass and zero charge.Yet it has the spin value...
Mar2-06 02:11 AM
Ruslan_Sharipov
15 4,537
I do not know if he is going, but Carl happens to have a 25 min talk allocated next Wednesday, before Koide's talk: ...
Jul12-07 01:32 PM
arivero
40 4,532
Hey I was just wondering anyone knew the mechanisim (specific if you got it) by which they create the antiprotons...
Oct14-08 08:50 AM
Vanadium 50
4 4,524
I'm new to quantium physics but taking an interesting and trying to read more every day. I have a bit of a silly...
Jun11-05 09:08 AM
James Jackson
5 4,522
Im trying to use the Bethe formula (http://en.wikipedia.org/wiki/Bethe_formula) to find dE/dx for a particle through a...
Jul2-09 04:05 PM
humanino
3 4,516
Based on this page: http://en.wikipedia.org/wiki/Fundamental_interaction How do photon, gluons, w and z bosons, and...
Oct15-07 04:35 PM
ZapperZ
23 4,513
I am having some conceptual difficulties here. Lets start with the electron-photon vertex piece of the QED Lagrangian:...
Dec23-11 10:14 PM
blechman
5 4,513
So I've been playing around with different electroweak lagrangians (sourceless, higgsless, unbroken, broken, etc), and...
Sep30-10 03:46 PM
michael879
30 4,505
Hi, I thought pions were assigned parity of -1, but how then can the Pi0 decay into two photons with parity -1?? ...
Mar18-07 05:46 PM
Joe1
5 4,495
Ummm...I don't know if this is the best section for this... but... it is said that a negetive energy can be created...
Oct2-05 06:55 PM
robousy
23 4,487
Today my freind sent me a vid showing nuclear explosions and I was wondering what makes the huge explosion... I...
Jul20-06 09:03 PM
Astronuc
8 4,482
Hello everybody, I have to calculate the matrix element of the process gg-->ttbar-->lnub lnub (ttbar dileptonic...
May15-07 08:31 AM
pierrechevalier
0 4,482
I 've been reading about Homotopy , homology and abstract lie groups and diff.forms and I would like to see those...
Apr18-11 01:51 AM
sheaf
3 4,482
What I'm looking to understand is why fission and or fusion result in the release of energy. I understand that: ...
Nov9-09 05:05 PM
Frame Dragger
6 4,480
Basic question, but nevertheless. In a non-Abelian gauge theory, the fermions transform in the fundamental...
Nov6-10 06:47 PM
tom.stoer
5 4,477
Ive studied how chain reaction of proton-proton powers the stars, I also know that proton-proton fusion will convert...
Dec20-10 12:59 AM
Deepak247
11 4,476
Hi guys First of all apologies if my question appears naive or simplistic - new to this field. I have read that...
Feb21-08 01:10 PM
humanino
4 4,474
Can we calculate the difference in mass between a Proton and Neutron? If so, how?
Nov16-10 08:06 PM
Passionflower
24 4,469
Can buckyballs compress hydrogen into high-density metallic form? ...
Apr29-08 04:54 PM
mheslep
3 4,462
I'm trying to clarify the terms "nuclear effect" and "atomic effect". Due to the synonymous use of nuclear and...
May2-09 09:15 PM
kashiark
3 4,461

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