Particle physics Definition and 537 Threads

Hi. I was reading an introductory book about particle physics and I visited the PDG for an exercise. I found this... http://pdg.lbl.gov/2014/tables/rpp2014-tab-mesons-strange.pdf On page 9, the data of K1(1270) is given. How do I figure out it's quark content? If I look at the data for K*(892)...

I know it's probably simple but I just don't understand reduced mass. I am trying to work out the reduced mass of 4He+. m = memN / me + mN Can somebody please just explain step by step what I do. This is only a segment of a 1 mark question and I'm getting my knickers in a frustratingly twisty...

According to the equation F=BQ/2pieM the frequency depends on the magnetic field and not the speed or radius of the particle. Can someone please explain why? B= Magnetic field strength Q=Charge M=Mass I think it's because of the force felt due to magnetic field so the time it reaches the dees...

Since in particle physics c can be take to equal 1, does this mean that Energy can equal mass if we use electronvolts ?

Homework Statement This is a question on multiple coulomb scattering in a wire chamber momentum p = 500MeV/c wire resolution = 120 microns distance from wall to wire = 0.01m radiation length of wall material X_0 = 2E-3 m mass of charged particle m_{\pi} = 139.6 MeV/c^2 charge z = 1 How thick...

Homework Statement A possible decay mode a of a positive Kaon in the production of three Pions as shown below:. K+ → π+ + π+ + π− Whats is the maximum Kinetic energy that anyone of the pions can have? The kaon is a rest when...

Hi everyone, I'm trying to build a simulation type program, with various made up, extrapolated elements, generated mainly by random atomic weights, and numbers, the program would end up being sort of a game, you would be able to fabricate, or collect elements with randomized properties, and make...

This isn't a homework problem. I am preparing for a particle physics exam and although I understand the theoretical side of field theory, I have little idea how to approach practical scattering questions like these. THE PROBLEM: Dark matter might be observed at the LHC with monojet and...

Homework Statement Electrons of energy 5.00 GeV are incident upon target protons and a search is made for neutral particles X0 produced in the reaction e− + p → e− + p + X0 What is the maximum mass of X0 which can be produced? Use any reasonable approximations, but justify your arguments...

I am looking for a Book in which Solitons and Skyrmions are easy explained. I want to understand them for Solid State Physics. Thank U Abby

I am interested in how physicists view time, and in any thought experiment (eg. anti-matters time direction, spinning black holes that may have the time dimension no longer orthogonal to the three special directions, delayed quantum eraser experiment that might permit backwards in time...

I saw a sign in particle physics ;O(1 TeV) and O(1 pb^-1). TeV is unit of energy and pb^-1 is unit of cross scetin I wonder why these signs are putting into parahenthesis

I want a book on particle physics which contains lots of theoretical calculations.All books recommended in my class contain lots of experimental techniques and very little about theory.I like "Introduction to Elementary Particles" by D Griffiths.Is there any book like Griffiths?

Hi, I'm new to the forums here, so please forgive me if this is the wrong place to post. I'm currently a junior in high school, and from an early age I was put in all the "gifted" classes. Which kind of put pressure on me to choose a career like physics. Despite all the pressure I always loved...

I've never really been...convinced...of the statement $$\bf{J}=\bf{L}+\bf{S}$$ I've always just gone along with it, but I've never seen why this is "right". So I guess now's as good a time as any to ask. Thinking about this from a "classical" perspective (which obviously is not correct, but...

I would like to study the fundamental aspects of the Universe (of course, assuming that I am capable of pursuing such a thing in the first place). Not necessarily on a large scale, but I am interested in space, time, the fundamental aspects of matter... Things like that. I know that there is...

Hello Everyone! I have a huge dilemma this period.I'm searching/applying for masters but I've not yet quite come to a conclusion regarding the field.For example,I love particle/nuclear physics but I also like radiation physics and radiation biology.My undergrad thesis was on radiation biology...

I am new to this field can anyone suggest a book for beginner?

Hey there, Does anyone have a table will all the particles and their respective spin, lepton number, mass, etc etc? I know I could make one easily, but it'd be much easier if someone had one already, or knew of a site that had one.

Hello all, I'm going to begin a PhD program in the fall and likely will be doing research in the world of particle physics. I'm a little rusty on the topic though as my undergrad research experience has been astrophysics, and I did not get a chance to take any classes related to the field other...

I'm about to begin my third year of a physics major and I want to do units that will best prepare me for honours and post-grad studies in theoretical particle physics and/or particle cosmology. My core physics units will cover quantum mechanics, classical mechanics, electrodynamics, special...

Particle Physics -- decay of a neutral pion Homework Statement Consider the decay of a neutral pion that has a momentum of 10 GeV/c into two photons. What is the minimum energy that a photon from this decay can have? In terms of the pion mass and pion momentum. What about Maximum Energy...

Homework Statement Show that for real valued E a particle at rest can not decay. Homework Equations Width of resonance. \Gamma=\hbar/\tau Relativistic Breit-Wigner distribution P_rel_=\Gamma/((E^2-M^2)^2+M^2\Gamma^2) Wave function of particle at rest. ψ(t)=ψ(0)e^(-iEt/\hbar) The...

I draw Feynman diagrams in JaxoDraw. But If I draw gluon line up to down or down to up, I get different results for gluon lines. I share a picture to explain my problem. Are these two diagrams the same? http://img809.imageshack.us/img809/3184/rq9z.jpg

Hello there, This isn't specifically homework, it is study. I'm having a difficult time trying to understand how to calculate/estimate partial decay widths, \Gamma[\itex], and Branching Ratios. I haven't found very clear information online so far. Here's just an example below that I'd like...

The radical Smolin thread left me wondering if other similar ideas could not be applied to other areas of Cosmology and even Particle Physics. Every complex system I can think of in our lives, and in nature, forms part of a complex multifaceted control system or process, with various feedback...

Hello friends..I'm an electronics engineering student from India and I would like to pursue masters in theoretical physics(particle physics) in a good university abroad...what are my options??Does my engineering gpa matter for physics masters admission??I hope to get a reply soon... :smile:

I am looking for help and guidance as I ask you for advice; which literature do you suggest i read as introduction to said areas of physics? I have the understanding of classical mechanics. I am looking for literature which is not condesending nor too simplified. Thanks in advance.

2) A π0 of kinetic energy 350 MeV decays in flight into 2 γ rays of equal energies. Determine the angles of the γ rays from the incident π0 direction. Not sure where I am going wrong but my answer is not correct. Energy of π0 meson E = 350 MeV Rest mass Energy of π0 meson E0 = 135...

Hi all, I want to learn about particle physics. I want to know what courses and topics in physics (and Mathematics) generally do I need to learn? Thanks

Hello folks, I am from Hong Kong studying in a university in HK, major in Physics. Next year will be my final year of undergrad (3 yr undergrad program) and I am considering applying for graduate schools in the US. My major research interests lie on particle physics and particle physics...

So I'm intending to teach myself some Particle Physics and Standard Model type stuff, I was wondering if someone who's already covered this could give me some advice. I did some Group Theory a few years back and looking over content pages of lecture notes I occasionally spot references to...

Hi I wil be starting a PhD in particle/accelerator physics in September it's titled " beam dynamics and beam beam effects for Hilumi LHc and LHeC" Has anyone got any advice for me? It's a fully funded Phd at Manchester university Uk, but it's mainly based at the cockcroft institute. I'm...

So I read that fermions can be defined as "matter particles," while bosons can be defined as "force carrier particles." I read further that fermions can be divided into quarks and leptons. However, apparently mesons are considered bosons, as a consequence of their spins. Does that mean that...

As is shown in the website http://www-sldnt.slac.stanford.edu/snowmass/Software/EvtGen/documentation/pylist.txt is the pythia particle/parton data code, could someone tell me the meaning of parameters "col" "anti" and "w-cut". Any comments are very welcome.

I want to start self-learning particle physics, and was wondering if any of you can give me some pointers as to what to do in terms of books to read, maths to learn, etc. Some background: I have taken undergrad level quantum mechanics 1 and 2 (completed Griffiths), and also a course on...

Hi all, I apologize if this should have been posted in a math section instead, I wasn't sure. But I'm wondering if homology or cohomology ever comes up in theoretical physics? I'm being introduced to it at the same time in an algebra class and a manifolds class. There's a...

I am an aspiring physicist. My main interests are Particle Physics, Cosmology and Black hole physics. I am going to join a college this year for the same. I applied to two colleges and got selected. University of Lancaster and University of Birmingham. I have applied for the course - Physics...

Do I need to know chemistry good to be able to learn about particle physics?

Hello! I, like many others, am interested in studying physics on my own as my school doesn't offer any kind of physics for ninth graders. (The tenth grade physics class isn't very in depth either; I took part of it in 8th grade). I have exhausted what Khan Academy has to offer, and I am...

What is the equation of strong and weak force? & how to combine it mathematically?

Hi, I'm a student of Nuclear Engineering (MS level) at University of Dhaka, Bangladesh. I completed my Honours and Master Degree with Mathematics. I have chosen to complete a thesis paper on "Application of Lie groups & Lie Algebras in Nuclear & Particle Physics." I need some guideline...

I'm in tenth grade and am interested in studying physics. I've heard that the best way to get started is to have an understanding of elementary physics, so can anyone recommend some books and websites to get started? I have practically no background at the moment, so a general overview would be...

I'm posting this here even though it is related to photography, just to make sure it gets enough eyes. Don't miss casting your votes for your favorite Global Particle Physics PhotoWalk contest. http://www.interactions.org/cms/?pid=6000 You get to select and vote for 3 of them. And...

I vow to do something in Particle Physics but some real nast circumstances hinders my desires.So plan to take admission in BS Mechanical Engg and after wards M.S Nuclear Engg..How close might it be to particle Physics where I might end up?If not close enough reccomend any other field.

Author: Brian Martin Title: Nuclear and Particle Physics Amazon Link: https://www.amazon.com/dp/0470742747/?tag=pfamazon01-20 Prerequisities: Contents: Table of Contents Preface to Second Edition. Notes. 1. Basic Concepts. 1.1 History. 1.2 Relativity and Antiparticles...

What is the best particle physics textbook (for a first course in particle physics) for someone with a background of quantum field theory? P.S. I am interested in theoretical particle physics

Homework Statement The D meson has a mass of 1865 MeV / c^{2} and a lifetime in its rest frame of 4.1 x 10^ -13 seconds. A D meson is produced and decays into a Kaon with mass 0.494 GeV/c^2 and a Pion with mass 0.14 GeV/c^2 A) what is the typical speed of D meson that travels 1mm before...

I still have a long time to decide, but I am interested in the fields of particle physics, astrophysics, and cosmology. Here are my questions about them: 1. What field has the best outlook for the future? 2. Is there a degree that provides flexiblitiy in the choice? 3.What fields have the most...

I would like to know where to go to find particle physics on this site i am new sorry