Particle physics Definition and 537 Threads

I'm trying to figure out what the standard model of particle physics is, what is included, who decides what's included, and how one would know when a new concept/theory is included or possibly rejected. It would be great to have a list of recent additions or experimental confirmations. Must...

What happens to the particulate nature of light as a light expands outward infinitely from a single point light source. Pretty much all light in the universe does that, except only where lensing takes place to create a non-divergent beam of light ... although I think such a thing is a near...

Particle Physics in Uni. of Manchester--Review and comment. Hi everyone, I am applying a MSc in Particle Physics at Uni of Manchester. I've done some research on the university ranking by subject area, student's reviews...etc. which are posted on the net. But I am hoping to get more info...

I would like to go to a school (In America) that is decent and has courses which would allow me to major in something such as quantum mechanics, high energy particle physics, or string theory (basically any kind of abstract, theoretical physics/science). I am a low A high B student, so i do...

Hi all. Would you believe that it is necessary for me to take a course in "Nuclear and Particle Physics" in order to be able to do graduate work in condensed matter physics/quantum optics? Thank you in advance. Niles.

Hello all! So, I'll be taking first-semester quantum mechanics and partial differential equations this fall, and would like to get a little bit of a head start by reading/working some problems on my own this summer. After some initial browsing, I've heard mixed-to-poor reviews concerning...

Hey, I m obsessed with High Energy Physics and would like to do post-grad in the field. I ve applied to Oxford, Imperial, Edinburgh and Sheffield...and (to my surprise) have been accepted to all four...I m trying to get all the opinion/insights/thoughts possible so if anyone is willing to dish...

E(threshold enrgy) = M* − M(squared) −m(squared) divided by 2M Determine the threshold energy for producing a top quark and an anti-top quark when beams of electrons and positrons of equal energy are made to collide head on. What do i sub in where and what do i with M*. Thanks

What do you guys think would be more fun particle physics or molecular biology? I love science and math and i love the idea of working on the most fundamental things of the universe, but i could do more practical things in molecular biology, so I am asking you guys what do you think?

Seeing the discussion in the thread about Quantum Mechanics Careers in which ZapperZ and Locrain discussing the role of a Particle Physics Theorist, the current state of affairs in particle physics and the transport of particle theorists to astrophysics theory made me think of a recent email I...

How "hot" of an area of research is particle physics? Hello friends. I am currently trying to decide which branch of physics I want to go into. I have been interested in working as a theorist in particle physics, but I am afraid that the job market for this is not good. Also, I am afraid that...

I have just embarked upon a PhD in Lattice QCD. I'm wondering, what is research like in other areas of theoretical particle physics? Lattice is highly computational and fairly light on theory so it seems a lot of people in the field spend quite a bit of time making/updating and running large...

Hello! I was wondering if someone could help me with a problem of units! I'm currently deriving probability equations for neutrino oscillations and I'm stuck with units! I have: [(mass)^2 * time]/[4*energy] and I want to write it as [1.27 * (mass)^2 * distance]/[Energy] with distance in...

Hey all, I am an undergraduate taking a particle physics class and we just learned that the EM force was caused by charges "spitting" virtual photons back a forth. In like second grade we learned that the EM force was dependent on the two charges involved (keeping this simple) and the distance...

What are some of the most important research skills to develop as an undergraduate, particularly concerning particle physics?

What does "W cut" mean in regards to particle physics? I am helping a professor put together some graphs with data from particle physics experiments. I saw something called "W cut" in the data files and was wondering what exactly this means. For example, I came across the three values for W...

Greetings Next semester I'll have solid state physics, statistical physics and and introductionary course in elementary particles. So I was wondering maby those of you who had those subjects could recommend me some books. I really liked books by Griffiths so far. Especially the one on...

Homework Statement Q) 1]Neutral pion decays into 2 photons which then decay into electron-positron pairs. What would the feynman diagram look like? 2] Why is this decay of the neutral pion difficult to identify in bumble chambers? Homework Equations feynman diagram...

Hello, I join these forums because I am interested in having somebody to chat about QM with. Somebody with the same lvl of interest would be great! I have a basic interest in the ideas of Quantum Mechanics, Relativity, and Particle Physics. Basically, if there is something on the Discovery...

Why does Nima A-H say “unlikely to tell us anything about particle physics”? Nima Arkani-Hamed is a brilliant young phenomenologist (b.1972) who left a faculty position at Harvard this year to join the Princeton Institute for Advanced Studies. My impression is that the work he is best known for...

Hi all.. I am going to pursue my study for MSc in Physics next year most probably in UK. As a completion of the course, we need to do an in-depth research project. With Particle physics in mind, I am quite clueless in deciding the project that I will do for my MSc. I am hoping you guys can help...

Hi all, I'm measuring multiple coulomb scattering by using 4 chambers filled with He gas, and lead plates between the top 2 chambers and bottom two. The chambers have a potential difference across the plates so when the muons ionize the He gas, a spark is produced. A camera marks the pixels...

hello all It's probably already been noted but... have people seen the paper hep/th-0810.3328? "A simple introduction to particle physics"? It looks like a very nice introduction to the maths behind the development of particle physics for advanced undegraduates and experimental...

I plan to study particle physics especially about the quantum field theory but i don't know how to start with. I have studied mechanics,modern physics,electromagnetism using Serway Physics for Sciencetist and Engineers.I have also studied Waves and Vibrations using H.J Paind Book and also...

I'm a 14 year old, living in Ireland. The country where many great authors and poets have come from. Unfortunately not nearly enough particle physicists. So my question is: How do I learn as much as I can about particle physics. There's only so many books you can read before you start to just...

Homework Statement In the year 2000, the highest energy beams at LEP were achieved, at E = 104.5GeV. a) Calculate how much larger was the synchrotron energy loss at this energy, relative to the synchrotron energy loss at E = 45.1GeV Homework Equations E_{loss} = (E/m)^4 x...

Hi, I am new to the area of particle physics and I am still in high school and I was wondering if somebody could answer a few questions that I have. 1) Where is a good school in Canada to go to for particle physics 2) Can for example 8 up quarks be combined together using strong nuclear...

Where do you see Particle Physics/CERN heading in the next 50-100 years? What will come after the LHC? What research will come after the completion of the ATLAS, ALICE, CMS, and LHCb experiments? How will the discovery of the Higgs Boson impact research in other areas of physics, both...

Hi, I'm sorry if this is in the wrong forum. I've been interested in science for while a white, most notably theoretical physics. In the end, I decided to go for a degree in Computer Science, but haven't lost my interest in physics. With the introduction of CERN, I'd be interested if...

I am interested in physics. Everything about the universe excites me. I have a teeny tiny understanding of physics and the universe, though any equations I memorized during my school days have long since been forgotten. My question is; Does every particle have its own resonance frequency...

Does anyone know where to find the standard model of particle physics shown by Brian Cox in his LHC TED talk (found around 6:35 here: http://www.youtube.com/watch?v=_6uKZWnJLCM)? I'm looking to print out the equation but can't find it anywhere. Thanks

Hi, as well as applying to US gradschools (you may have seen some of my other threads...) I also intend to apply to UK places (I would ultimatley prefer to go a US gradschool, but I need some insurance incase I mess up the PGRE, and don't get accepted anywhere, or anywhere half decent). I'm...

Okay, so I'm going to be a senior in high school and it's time to start thinking about college. My interests are astronomy/astrophysics, particle/ quantum physics, and nuclear physics. This is cool and all, but I can't decided on which one or combonation of them to major in. I have a love for...

Any suggestions on text which could better my understanding of the mathematics governing particle physics? I am in my fourth year of my B.A.Sc. engineering physics degree, so I have a fairly strong math background as is. Thanks in advance.

Hi: I've heard that in electromagnetism, there is a system of units called Lorentz - Heaviside system, and that in particle physics, tis system is used insted of the gaussian or the SI. Why do particle physicist use this system? and by the way, How do we go from the Gaussian...

TASI 2008 (Theoretical Advanced Studies Institute in Elementary Particle Physics at the University of Colorado in Boulder) is almost wrapped up, and they're getting videos of the lectures (and slides) online faster than I expected. You can find them here, and it looks like they'll all be up by...

Does particle physics need a new edge? Some new ideas? A new approach? Perhaps smilies can offer a solution. For instance, here are some quarks: Up: :smile: Down: :frown: Strange: :devil: Charm: o:) Bottom: :cry: Top: :biggrin: Particle interactions can now be seen as the binding...

hello everybody.. I'm new member of this forum.. i would like to know what kind of mathematics knowledge is required to understand the mathematics of particle physics? because, i can't understand any math done in classical physics, particle pysics. i interpret particle physics as the study of...

[SOLVED] Particle Physics, perhaps a classification problem Homework Statement How are the classes of particles classified? The Attempt at a Solution Classes of particles should be bosons, leptons, hadrons and baryons. First, I had the idea that the particles are classified according to...

Homework Statement Hi 1) I read the following article: http://pdg.lbl.gov/2005/reviews/passagerpp.pdf On page 12 of the .pdf there is a figure, figure 27.8, which shows how a charged particle deviates from it's path when scattered by the Coulomb force that comes from the nuclei of the matter...

I'm following An introduction to the Standard Model of Particle Physics. Are there any solutions to the problems? Is there a better book to follow? Would appreciate, tx. JP

Couple of spicy questions: 1. If we new particles position to 99.9999...% or 100%, could the particle move at any speed including speed of light or even faster? 2. If a particle would have probability cloud 1 light year wide and we measured and found a particle at one end and few seconds...

if i read griffiths particle physics book will I have enough knowledge of the subject material to start reading peskin and schroeder's qft book or will I still have to learn graduate mechanics and electrodynamics first before starting on that. If I do need to look at graduate mechanics and...

Hi, so I am currently an ug, and I've been offered positions to do particle physics research. The thing that is turning me off is that it's mostly computational work in C++. I don't know how much i'll enjoy working at the computer all day, but the idea of studying what makes up matter is...

at what level is griffiths particle physics book at, what does it expect you to know as a prerequisite?

Homework Statement In the following reaction, the incident Kaon has kinetic energy of 1.63GeV.Calculate the total energy to be divided between the four recoiling particles. \bar{K}^-\ + \ p ^+ \rightarrow\Sigma^-\ + \pi^+\ + \pi^-\ + \pi^+ Given Given mass energy of pi...

Yes, I know I'm sad, but anyone with a knowledge of particle physics might find this funny.

Homework Statement A hadron has the quark content \ u \ d^- .Find the baryaon number,charge,spin and strangeness of this hadron.Can you identify this hadron? Homework Equations The Attempt at a Solution baryon number=(1/3)+(-1/3)=0 [u is particle but d bar is antiparticle] charge=...

Homework Statement Consider the combination of an electron with positron(I) and an electron with proton(II).The possible processes are: (i)formation in positronium in (I) (ii)formation in Hydrogen ataom in (II) (iii)annihilation of each other and gamma emission in (I) and (II) both...

I saw a recent question submitted where the person was seeking answers to particle physics due to the debilatating illness of OCD (obsessive compulsive disorder). I wondered whether somebody could answer this question in relation to airborne particles. In for example an work/office...