Boson Definition and 371 Threads

Please teach me this: Why carrying force particles must be Bosons and matter particles must be Fermions?By the way,why do we concentrate on Gauge Symmetries?Is it correct that is because the Gauge theories lead to vector Bosons that carrying forces? Thank you very much for your kind helping.

If the Higgs gives mass, wouldn't the Higgs give gravity too? If it exists that is.

Hi to all, I am an electrical engineer so my knowledge about "heavy" physics is somewhat limited. I like reading about ( only superficially ) this "heavy" physics so I am puzzled about something and I need your help. Is Higgs boson strongly related with Higgs mechanism? We all know that...

I'm reading Zee book on quantum field theory. He wants to explain that pion is the goldstone boson arising from the spontaneous symmetry breaking of the chiral symmetry. So he start with the weak decay \pi^{-} \rightarrow \bar{\nu} + e^{-} and write this equation <0|J^{\mu}_{5}|k>=f k^{\mu}...

Do we already know enough about the Higgs to be certain that we cannot interact with it(i.e. exert any type of control over it, like we can with electrons) or is there room for discovery there? I was just pondering some implications of such an ability, and realized that I don't know if the...

Somehow stumbled across this website Can't tell if it's made by a real physicist as a joke/parody or by someone who was dropped a few too many times. It looks like a lot of effort went into those diagrams though...

The standard model predicts, and relies on, the higgs boson. We have not witnessed it yet, because the energies required to do so were beyond us in the past. Current models predict, however, that (if the Higgs Boson exists) CERN WILL see it. I know its still early, but CERN hasn't turned up...

I read an interesting article http://www.scientificamerican.com/article.cfm?id=how-does-the-higgs-boson which says that string theory seems to require our world to have a property called supersymmetry and also, I have heard that the supersymmetry requires the eexistence of at least 5 Higgs...

If a Meson is a Hadron that contains a Quark and an Anti-Quark which are both Fermions then why are Mesons a type of Gauge Boson?

Why must it be a particle? I mean, if sub-atomic particles act as a wave and a particle why can't the higgs? Maybe the only reason we can't detect it is because we're looking for the particle and not the wave? Can someone please elaborate on this.

I was just wondering, what would happen when a W+ boson and a W- boson collide?

I vaguely know the Higgs boson and how it possibly explains how mass doesn't dissipate. However, I need a more in-depth explanation, preferably not Wikipedia's, about it. Thank you!

I've read a couple articles about the recent incident at fermilab last week about them overlooking something. The Dzero team found something they missed. Well in the end it is said that the odds of the "god particle" being real have significantly gone down due to the results of this last...

Is it possible to put a Boson and Fermion in superposition? If not possible, why not?

Sorry if I posted this in the wrong forum, to me it looks like this forum is for high energy, nuclear, OR particle physics. I was wondering if anybody could help me with this. I was trying to ask my teacher about the nature of energy transfer, and she said something that I really believe is...

It is known to all that the Hamiltonin H=p^2/m+x^2 can describe the boson and fermion particle, but how can embody the fermion properties when a fermion oscillator interacted with a boson oscillator? what is their interaction form?

How does moving at near the speed of light affect the geometry of space-time? How does an object increase in mass in relation to its speed? Does this have to with more collisions with the theoretical Higgs boson?

Is the Higgs boson and the Graviton two descriptions of the same thing?

The graviton (spin 2) and the Higgs boson (spin 0) are both involved in gravity. The Higgs carrying mass, and the graviton carrying the gravitational interaction. On the internet I red that a lot of people wonder if there is a connection. In electroweak interaction the forces are carried by...

Homework Statement One of the mediators of the weak interactions is the Z boson, which has a mass of 91 GeV/c 2. Use this information to find an approximate value for the range of the weak interaction. Homework Equations This is the part that I am having trouble with. I don't know where to...

Has the speed of W (or Z) bosons ever been measured? I presume not, because I have read they exist for only about 10^-25 seconds. So, how is it known that they are not charged particles that move at the speed of light, with energy, but no mass, like photons? Have they ever been isolated...

I was always wondering, on very short distances/high energies, what is a net effect of having not one (gamma) but two (gamma and Z) 'carriers' for the 'force' between 2 charged particles. Does it make an interaction sronger or not?

Hey Guys, Just a quick question. Can a W boson decay to a u and anti s or does it have to decay to a quark and anti-quark of the same generation? Thanks!

For a system of N bosons that are non interacting, the wavefunction is given by: SQRT[1/N!.n_1!.n_2!.n_3!...] SUM P. A_1.A_2.A_3...A_N Where the sum runs to N! and the P is the permutation operator, swapping 2 particles at a time. n_i is the number of particles in the nth energy state...

Please take a moment to help enlighten a poor ignorant layperson. My understanding is that every known boson and fermion has a corresponding anti-particle, with the only exception being the photon. If true, can anyone explain WHY that that is?

Homework Statement I want to apply the Bose Einstein distribution, firstly to a photon gas and then, to a massive boson. Homework Equations Bose Einstein distribution The Attempt at a Solution How do I begin?

I understand the laws for electricity and magnetism and such, and that you create a magnetic field perpendicular to the direction in which the electric charge is moving. Recently, I have been doing some soft research on quantum mechanics, and I see that the electric force, the weak nuclear...

I saw this paper listed, http://arxiv.org/abs/1012.5529 Asymptotically safe weak interactions Xavier Calmet (Submitted on 26 Dec 2010) "We emphasize that the electroweak interactions without a Higgs boson are very similar to quantum general relativity. The Higgs field could just be a...

I'm reading Zee's QFT textbook and I'm stuck trying to understand why the \delta^\mu_\lambda appears when he defines the propagator of a massive spin-1 boson as the inverse of a differential operator: [(\partial^2 + m^2)g^{\mu\nu}-\partial^\mu\partial^\nu]D_{\nu\lambda} = \delta_\lambda^\mu...

i am not exactly sure what happens when the temperature almost reaches absolute zero how things react to this drop and what are boson ( sorry for spelling errors)

Hi just wondering if anyone could tell me why the Z boson can couple to any standard model particle except forgluons and photons?

Matter with even total spin are considered (composite) bosons, for instance atoms whose particle spins add up to an even number, but they don't behave at all like gauge bosons, and I don't think they follow Bose-Einstein statistics,unless they are cooled to near absolute zero temperature, in...

Can someone give me a qualitative/handwaving argument of why much more W^+/- boson are produced in proton-antiproton collisions compared to Z^0 bosons? PDFs are not enough to explain this I believe, since we will have more u ubar pairs in the collision than u dbar... Also if I...

As we know, the number of physical degrees of freedom(DoF) for a photon is 2. I can understand this by gauging away redundant DoF's by gauge fixing. For example, in QED, by fixing the Lorentz gauge \partial_\mu A^\mu = 0 , we could get rid of one DoF, moreover, the residual gauge...

http://www.higgs-boson.org/ Is it as garbage as it looks?

Hello, Just to give a little background here, I am entering into a Bsc (Hons) Physics major next year at the University of Saskatchewan and I have just been reading some books and learning about the standard model over the summer and I had a quick question. Most recently I just finished 'Beyond...

There was an argument in my Physics II class today over the appropriateness of 'God particle' for the Higgs Boson. I thought it would make some people perceive it incorrectly and it probably overstates the importance of its existence. Do you guys think its offensive that a deity is invoked...

I was looking at the list of the force carrying particles and all of their masses read zero other than the W boson of the weak nuclear force. Q: Does the W boson travel at the speed of light even if it is massive? (I am guessing not) Q: If the W boson is massive then it emits other gauge...

I was reading this book that separated the graviton from the higgs boson. Can I get some help anything works for me.

Hi, I was wondering about the U(1)_A problem. The Lagrangian exhibits a (in the limit of vanishing quark masses) U(1)_A symmetry but due to the chiral anomaly, the current J_5^{\mu} is not conserved: \partial_{\mu}J_5^{\mu} = G\tilde{G} + 2i\bar{u}\gamma_5 u +... The G\tilde{G} term...

I was just reading up on Bose-einstein condensates and was wondering about something,hopefully you could point me in the right direction. so when you get atoms down to a low enough temperature the pauli exlusion principle gives out and they can sit ontop of each other like bosons,and they...

For my Physics exam, I need to know 3 Feynman diagrams: beta-plus/minus decay, proton electron capturing, and neutrinos interacting with matter. I know that there's a W- in \beta- decay, W+ in \beta+ decay, which seems logical. However, in proton electron capture there is a W+ boson, and...

does the w- (or w+) boson actually possesses a negative charge? i.e., would it deflect in a magnetic field like an electron? or does it just carry a negative charge? i'm trying to come to grips with a boson possessing charge at all. if that were the case, an infinite number of negative...

Hi I can't find a Feynman rule for the coupling of two Z bosons to a photon. Does the Z boson couple to a photon at all?

You'll never believe it, but physicists at the LHC have discovered the Higgs Boson! It has the expected properties, and many physicists say that this proves once and for all the Standard Model. "This truly is a momentous discovery," Steven Chu, Secretary of Energy for the U.S. said. "Now our...

My question is (and it's probably stupid, I'm a layman, please have patience with me): It seems from what I've read that the Higgs boson, if it exists, is very unlikely to have an extremely high mass (above ~500 GeV), and probably has a mass under ~145 GeV. And I know the top quark with a mass...

Hi,all. My lecture said, two fermion can form a composite boson. two spin half plus together get 1. Yes I agree, but i think that's depend on whose frame of reference. say A and B is two fermions, C and D is another two fermions (observers). AB form a boson. if: AB...

when is the LHC find out if higgs boson excist?

i know no one has ever seen them before there just a theory but my question is what are they? do they make up quarks to give everything mass or what I am kinds confused.