# High Energy, Nuclear, Particle Physics

- Properties, relationships, and interactions of subatomic particles. Exp. & theo. physics of nuclei & elementary particles
 Meta Thread / Thread Starter Last Post Replies Views Views: 1,528 Announcement: Follow us on social media and spread the word about PF! Jan16-12 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 25,851 Pinned: Higgs particle is 'found' ( 1 2 3 ... Last) 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 62,155 Hi everyone, I have studied QFT, the SM and the Higgs mechanism when I was in university and after reading an... Apr25-14 09:26 AM andrien 5 756 Hello all, My son and I have been doing experiments with a simple cloud chamber and I am curious what type of... Feb3-13 08:43 AM Vanadium 50 3 757 Hey, I've been reading a bit in the QFT book by Pierre Ramond about loops and i stumbled about some derivations in... Jan27-11 01:35 PM earth2 2 757 How can I prove by using the Lagrangian of some gauge theory (GWS say) that the vertex ##f \rightarrow f \gamma ##,... Jun14-13 08:46 PM LayMuon 0 757 Is there some rumour about experimental measurements of decays into two photos that I have missed? Oct17-10 11:18 AM Meir Achuz 1 758 Can anyone help me with two questions? 1. How efficient are x-ray monochrometers & why are different crystals... Apr19-11 10:45 AM etchlookat 0 758 Hi, I am self-teaching Quantum Elctrodynamics, and have come across something which I do not understand. I would... Mar19-14 08:35 AM boltzman1969 2 758 Dear PF, although I've gone through many particle phyics lectures and text books, I still have problems with wrap... Jun15-14 05:56 PM kurros 7 758 I asked this in a thread on string theory, but the answer could well be in the standard model, so here I ask the same... Nov13-10 02:49 PM arivero 0 760 Can the products of high-energy particle collisions include the creation of electromagnetic/strong/weak/gravitational... Dec20-12 05:15 AM mpv_plate 1 760 Yeah, there is many information on Internet, but it is a complicated level, they speak about cut-off, top-down, series... May22-13 01:24 AM StarsRuler 0 760 When we derive the Bethe-Salpeter equation, we have the relations of mass of constitute m, transverse momentum, q-hat... Oct18-13 02:10 AM Hluf 0 760 Recently, I read a review on magnetic monopole published in late 1970s, wherein some conjectures of properties... Nov16-13 03:30 AM Simon Bridge 1 760 How do protons and neutrons behave in nucleus? Is they just sit where? Or move some how? or maybe jei form some form... Jun29-09 05:01 AM malawi_glenn 1 761 how to solve this equation using mesh point method? and what is the mesh point? Nov18-10 06:10 AM nuclei 1 761 So I think, as a rule of thumb that for fission to be possible \frac{Z^2}{A}\geq47 I want to be able to derive this... Nov12-12 07:40 AM mfb 2 761 Can someone explain to me what is a Feyman diagram color-suppressed at the tree-level? It's my first post, sorry if... Jun11-14 10:51 AM Miralansa 5 761 what's $5\sigma$ discovery contour? Thanks Oct3-10 01:25 AM Goose 0 762 Hi all I found these equalities from Gordon Brown (1963). He uses the killing form to measure the length of the... Apr12-12 10:53 AM naima 0 762 what are standards model limits on decay of K0, Do, B0 meson into a pair of neutrino and anti neutrino. I know that... Mar15-13 02:15 PM Hepth 2 763 Hi, Radioactive materials will decay to datughter products. in the mean process they emit alpha or beta... Jan25-11 05:05 AM rama1001 2 764 Hi @ all, I have a question about IR divergences at hadron colliders. I can see that there are also IR divergences... Jul31-12 07:48 AM Jodahr 0 764 Hello I am doing radioactivity with my year 10 class and it has set me think about something. I would be... Mar16-13 04:45 PM Astronuc 3 764 Can anyone walk me through this calculation? I'm not completely sure how to do it (merely a student). So is this... Nov22-09 04:48 AM Vanadium 50 1 765 I'm in undergrad doing research with a professor. He's leaving for vacation for a few weeks, and has tasked me with a... Jun14-13 11:01 PM eigenstaytes 0 765 how we look in for particles,decide their properties like mass ,charge,spin etc in experiments(collision experiments)? Mar9-11 09:41 AM Meir Achuz 2 766 News reports have it at 4.9 magnitude and a depth of 1 kilometer The USGS appears to have it at 5.1 and the depth... Feb13-13 02:12 AM Borek 1 767 Does the shape of the Higgs potential change if the energy of the vacuum changes? According to Wikipedia, If a... Apr4-13 07:28 AM lark 0 767 Hi, aside from nucleons is there any other stable (metastable doesn't count in this question) hadronic matter that... Nov25-13 09:03 AM mfb 9 767 A proton and neutron "at rest" may stick to each other forming a deuterium and releasing some 2.2 MeV energy but what... Jan13-11 09:02 AM Norman 1 768 Hello. I would like to ask something that will help me understand a little better how we work with Dirac spinors'... Feb4-14 01:56 PM Bill_K 1 768 In calculations of weak interaction processes in the Fermi-theory, there are some amplitudes of the form:... Jan9-11 09:10 AM evilcman 2 769 Hi folks, I've been reading about Montonen-Olive duality and understand that two different classical theories can... May5-14 12:25 PM andrien 2 769 Consider the usual phi^4 theory, when we derive the Lehmann-Kallen representation of the propagator, by inserting a... Oct5-10 07:08 PM ingenue 0 770 At high energies electromagnetic force and weak force merge in one force. There is difference between strength of EM... Oct26-10 02:26 PM Upisoft 0 770 I know they have been very close to it and seen something similar to the boson but did they actually find it? it's... Jul26-12 07:41 PM jtbell 1 770 what is the difference between luminosity, Intensity and flux in particle physics? Some time people use them in... Mar15-13 08:31 AM mfb 1 770 Hi everyone, i am just wondering why I cannot find a list of Charge Conjugation and Parity numbers for all the... Feb10-14 12:40 AM grzegorz19 3 771 In the standard model, the Lagrangian contains scalar and spinor and vector fields. But when we consider spontaneous... Feb25-14 05:38 PM Bill_K 4 775 Just curious. The Planck length is lpl = (hG/c3)1/2 = 10-33cm And it seems intuitive that it's c cube because... Mar2-14 08:24 PM ChrisVer 6 775