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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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Feb23-13 08:41 AM
ZapperZ
1 21,043
God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered...
Jul11-12 01:13 AM
tom.stoer
178 34,387
Hello, I understand that the non-zero (or non-small) rate for \pi^0 \rightarrow \gamma\gamma was historically a big...
Jan30-08 10:57 PM
Avodyne
2 3,478
I'm following An introduction to the Standard Model of Particle Physics. Are there any solutions to the problems? Is...
Mar21-08 12:48 PM
kdv
3 2,080
I'm wondering why I haven't run into a discussion anywhere that uses Feynman's model of anti-matter moving backward in...
Jan27-11 05:13 PM
Naty1
3 1,309
My question is: What is the relation between the AFB and the asymmetry charge?
Aug21-12 07:02 PM
kurros
2 787
Would somebody be kind enough to explain what exactly is meant when discussing short- or long-distance...
Aug21-08 10:30 AM
jossives
2 1,915
Could somebody explain how an imaginary phase in some of the CKM matrix elements represents a CP-violation factor?
Sep9-08 09:20 PM
hamster143
1 1,306
Let's take for example the decay K+ -> pi+,pi0,gamma This can proceed via direct emission or inner bremsstrahlung....
Sep17-08 12:29 AM
hamster143
3 1,394
Suppose an antimatter at lower energy(K.E) collides with a matter in higher energy then what will be the output.
Jun12-09 01:45 PM
malawi_glenn
1 925
Can antimatter(positron) can be converted into a matter(electron) . If yes what other particles are created in that...
Jun12-09 03:54 PM
Bob S
1 843
I am only completing high school physics, but I hope to study physics at university, so bear my level of knowledge in...
Feb3-07 12:47 AM
Mentz114
7 1,454
How do you determine in a particle interaction which force is responsible? For example a K- meson is found to...
Oct5-11 11:38 AM
kaksmet
3 1,198
As I was taught in my modern physics class the Higg's Field acts like an ideal ferromagnet cooling down to some...
Sep20-12 05:10 AM
Skitto
17 2,597
hey , just wondering about gluons : red - anti red red - anti blue red - anti green blue - anti red blue - anti...
Jan17-07 09:18 AM
humanino
16 3,361
for my question , i will use the term 'level' hey , we know that the zone we live in is made up of atoms (level 0),...
Apr13-07 01:25 PM
mormonator_rm
6 4,748
hey, i was told that in a Atom's Nucleus, Nucleons keep changing from Proton state to Neutron state , and vice versa ,...
Dec3-07 06:19 PM
mormonator_rm
14 2,907
Hey I know : n = p+ + e- + (Ve) meaning that : p+ = n - e- - (Ve) = n + e+ + Ve ?? But, how...
Nov25-07 09:54 AM
JPC
52 6,113
Hi I was wondering if there is a maximum temperature As i understand temperature : Energy With cinetic energy...
Jun9-08 06:10 AM
JPC
6 1,758
Sorry, this is probably a dumb question but I am new to physics so forgive my ignorance. I learned in class that when...
Sep24-09 08:20 AM
clem
3 2,963
Hi, I'm sorry if this is in the wrong forum. I've been interested in science for while a white, most notably...
Sep13-08 11:42 AM
malawi_glenn
9 2,469
Hi everyone, I'm new to PhysicsForums. I don't really know if what I have to offer is anything new to anyone or if it...
Nov16-11 10:56 AM
arivero
11 3,969
I am aware that the LHC accelerates subatomic particles to just under the speed of light then smashes them together....
Jan2-11 09:20 PM
bcrowell
4 2,148
I heard that (charged) Pions decay due to the weak force, but what does that have anything to do with it? Also,...
Jun21-11 03:28 PM
QuantumPion
3 1,958
I am studying A2 physics so don't know alot...my question is simple...is quark flavour conserved....I know quark...
Jun6-12 05:58 AM
jsmith613
4 847
hi all its has been told in books that a particle accelerator can reproduce the initial conditions in the Universe...
Mar3-04 10:58 AM
Cyclotron Boy
3 2,339
i was wondering this if the nuclear force overcomes the electromagnetic force in the nucleus, then what prevents...
Mar21-04 09:09 AM
pmb_phy
4 2,043
hello all It's probably already been noted but... have people seen the paper hep/th-0810.3328? "A simple...
Oct29-08 11:09 PM
landscape
2 2,174
hello all gauge symmetries are redundencies of the description of a situation. Therefore they are not real...
Nov23-08 08:50 PM
julian
9 1,694
How much energy does a neutron need to be able to split an atom and start nuclear fission?
Nov10-10 10:41 AM
QuantumPion
21 2,752
Looking at these images and video, and thinking about difficulties in holding plasma within EM field, I had an idea: ...
Jun24-11 01:47 PM
Wiemster
14 2,885
I'm planning on doing my 4000-word extended essay for International Baccalaureate on virtual particles (theoretical...
Jul16-12 10:16 AM
Junge
5 1,160
What is the fundamental rationale for why particles moving through the Higgs ocean would only interact if they are...
Jan18-12 01:11 AM
kurros
24 3,428
Two Questions about fundamental forces: 1. Gravity is attractive, Electromagnetics is attractive and repulsive,...
Sep4-12 06:11 AM
JustAnyone
3 1,017
Hi, Iím a hobbyist writer with a slight science fiction slant to my stories. Currently my work involves some...
Nov23-10 05:57 AM
justawriter
7 1,866
What is a realistic timeline for the LHC initial experiments? ie. with a machine this massive and complicated, how...
Dec1-09 02:32 PM
Vanadium 50
1 1,490
Okay, these questions aren't completely about the Higgs, but it is a good starting point / explicit example. After...
Feb3-10 04:47 AM
JustinLevy
8 1,464
The only "spontaneously broken symmetry" that I can easily visualize, is cooling down a ferromagnetic material and...
Feb4-10 02:59 PM
kikushiyo
2 1,297
I realize we haven't been able to see the signal for a Higgs boson directly yet, but I have heard there is plenty of...
Feb19-10 05:50 PM
blechman
9 2,031
I wanted to understand what symmetries the standard model lagrangian has, and what "effective" (don't know what to...
Aug16-10 08:30 AM
Parlyne
9 2,198
I'm probably making a mistake, but looking at the free field lagrangian for QED \mathcal{L} \propto...
Oct11-10 04:53 PM
JustinLevy
8 1,603
Does anyone know where I can find good tables for low energy nuclear processes? For example collisions to products...
Nov21-10 12:49 PM
Astronuc
2 1,221

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