Higgs Definition and 674 Threads

Dear Physics Forum, As I understand it, the Higgs field is a quantum field that stretches throughout our universe. Particles that carry mass (for example protons and electrons) acquire this property by interacting with the (local) Higgs field. I assume this interaction can be written in the...

What is the Higgs boson's mechanism for giving mass?

Dear Physics Forum, can anyone tell me which of the fundamental interactions is involved in the Higgs Field? Or is it a new and unique type of interaction apart from the fundamental 4?

I am writing about some crazy hypothesis I have about the impact the quest for the Higgs Boson, thereafter designated as HB, might have had on the number of people who declared physics majors during the years following its discovery. The preliminary data I have concerns two universities in my...

I'm not sure this thread belongs in this forum since we have now discovered a Higgs like boson. But I'm trying to get a better understanding of how the Higgs mechanism works. Let me share what I think I know, and you tell me how far off I am. Particles gain mass as they travel through the...

Hi all, I try to calculate the Higgs production cross section by Mathematica using for example the formula in [arXiv:hep-ph/0503172]. The problem comes when I calculate " σ_0 " it's of order 10^-10 pb at mh = 125 GeV ( 3.57), then when I convolute with the parton distribution function to get...

We have had several threads that discuss the 2009 prediction of the Higgs boson mass by Shaposhnikov and Wetterich, which used the assumption that quantum gravity is "asymptotically safe". But it's also true that the observed value is within a range predicted by some orthodox supersymmetric...

The Higgs experiment was intended to discover Higgs boson. But, can measurement data give any other new elementary particles? Or, are the measurements so specific, that other particles cannot be seen?

There's a recent (released?) documentary called "Particle Fever" about the search for the Higgs boson. I'm not sure if it's been released yet. Has anyone seen it yet? Some info: Particle Fever editor Walter Murch: 'The Higgs boson is kind of a MacGuffin' David Kaplan Explains why the...

Hello! I was hoping somebody may be able to help me understand something much beyond the physics I have learned so far. I need to complete an assignment that I believe is asking me to find the Higgs potential function? 1. My professor mentioned the following: minimization at the origin...

I'm not very good at physics but please forgive me. What will hapen now when we found the higgs boson: I have a proposition i don't know if it is posible but if someone can help and explain to me i will be greatiful. Is it possible that now when thay found the higgs to do the same like the...

Hi Everyone. In the Resonaances blog, I recall that it was mentioned there that the particle physics group at CERN had made an updated statement of the mass of the Higgs as being 125.8. When I look at the Resonaances blog I cannot find reference to this statement and they are only now...

I've PMd some of you with this question, but I got some conflicting replies or no replies at all lol, so I'm posting it here. I also did a Google search and found this which I'm almost sure answers my question, but I just want to confirm with you guys: ''In general, scalar fields are referred...

why without the higgs boson, would particle physics be nonsense. why does this particle have such an important impact on particle physics. is this why it was called the god particle? its existence is unquestionably but no one had ever seen it. I bet when they discovered it the pa's were like...

as i understand it the higgs field is a spin-0 scalar field that gives mass to elementry particles. How is it a scalar field? I thought it was homogenous.

the wiki article on the higgs mechanism says "at a critical temprature the higgs field becomes tachyonic". Does it? If so what temprature? And how can a field be taychonic? Thanks in advance.

Am i correct when i say that the fermions get a mass and interaction term with the Higgs from the SU(2)_{L}\times U(1)_{Y} invariant Yukawa interaction -g_{y}\bar\psi_{L}\phi\psi_{R} - g_{y}\bar\psi_{R}\bar\phi\psi_{L} where \psi is the fermion field and \phi the Higgs field. My...

We know that - mass bends space-time - this is known as gravity We also know that - (interaction with) Higgs fields gives mass to particles Does mass/gravity bend the Higgs field as well?

I admit I am pretty much completely baffled by the concept of an additional particle being required to "give" other particles mass, but I would like to ask a simple question. given the extremely large amount of energy required to generate a higgs boson, how can such a particle come into play...

Hi all, Has anyone know how to calculate the loop function of Higgs decay to photons/ gluons by t quark , or a useful reference. Cheers, Safinaz

Hello all, How is it that super symmetry accounts for the Higgs having a mass and what would the 4 remaining Higgs bosons account for?

In Zee's "Nutshell QFT" (chapter V.7) or Shifman's book "Avanced Topics in QFT" (section 10) when they talk about vortices, they claim: if \phi(r,\theta) goes to \nuexp( i\theta) as r goes to infinity then \partial_{i}\phi becomes \nu(1/r) I do not see how? Is the phase equal to 1/r if r...

Does the shape of the Higgs potential change if the energy of the vacuum changes? According to Wikipedia, If a more stable vacuum state were able to arise, then existing particles and forces would no longer arise as they presently do. Different particles or forces would arise from (and be...

How come Higgs Bosons have mass if Higgs field itself gives other thin How come Higgs Bosons have mass if Higgs field itself gives other thing their mass?

I've always understood that the "formula" for the Standard Model is SU(3) × SU(2) × U(1). Since the discovery of the Higgs boson, and observations of neutrino flavor oscillations, has that formula been revised, or is it still the same?

When solving for instanton solutions in a 1+1d abelian Higgs model, it's convenient to work in Euclidean space using the substitution x^0 \rightarrow -ix_4^E,\quad x^1 \rightarrow x_1^E The corresponding substitution for the covariant derivative is D^0 \rightarrow iD_4^E,\quad D^1 \rightarrow...

I figure that we need a thread specifically for this topic, while we try to sort out just how minimal physics could be, in the wake of the Moriond conference on the Higgs and the data release from the Planck collaboration. Fedor Bezrukov has written many papers on Higgs inflation, and curiously...

Elementary fermions get their mass from the Higgs field. The electron and the muon have the same charge, i.e., the same coupling to the electroweak interaction. If these two particles are identical except for mass, then how can the Higgs mechanism give rise to different masses for them?

Hi, I haven't been following the search for the higgs boson and what it could actually mean to our understanding of the physical universe. The only fleeting thought I had was that if it gives mass to matter, it can lead to an understanding of gravity on an intrinsic level. Instead of...

i was just reading a article that said that if the higgs boson is proven for fact, then the concept of the mass effect (spacetime pressure and curvature) would be obsolete. Is this true? i spent so much time teaching my self about SR and GR.

http://arxiv.org/abs/1303.1812 It seems that the recently discovered particle is indeed Higgs, as has been suspected.

Higgs --- interactions and forces; distinction between these? At the moment I'm reading Lisa Randall's Knocking at Heavens Door, and I have a quick question that can no doubt be easily answered. I've often read and accept that there are four forces of Nature: Strong, Electromagnetic (EM)...

This was released today so I'm not sure if most have seen it yet. It appears that "a" Higgs Boson is confirmed. http://home.web.cern.ch/about/updates/2013/03/new-results-indicate-new-particle-higgs-boson

Firstly, thank you all for creating this forum, thank you all for tolerating my questions. As an expert in another subject, I know it's not easy to take time out of one's schedule to answer the questions of non-experts, and I am grateful that you guys have. That said, this question is a...

Hi can anyone explain what a quadratic divergence is? and if so how it effects the mass of the scalar field i.e why m^2 = m^2_{0} + \delta m^2, why are these things squared? Also how would this divergence affect the standard model as a natural concept, because from reading books it would...

I seem remember hearing that spin-1 was ruled out but since reading this paper I am unable to find any info on spin-1 Higgs. Has there been any further developments on this? Honestly, I am not a particle guy so I'm not sure on the details... can someone explain why Higgs' particle has to have...

Various news outlets are reporting a AAAS talk by Joe Lykken which appears to be about vacuum instability based on the mass of the Higgs. Frustratingly, there appears to be no info on the web apart from these crap popularizations. Can anyone provide any insight? The best info I have is the...

Is Higgs boson a form of energy ? Hello all . We know Higgs boson or Higgs particle is a theoretical elementary particle and in the Standard Model, the Higgs particle is a boson with no spin, electric charge, or color charge and it just has mass . So what's the problem when we say they are...

http://cosmiclog.nbcnews.com/_news/2013/02/18/17006552-will-our-universe-end-in-a-big-slurp-higgs-like-particle-suggests-it-might?lite There are several news sites saying the discovery of the higgs boson indicates that the universe is a 'false vacuum' but they're very light on the details...

A major part of the takeaway buzz in the popular press—and by a lot of authorities quoted it seemed—was that the Higgs boson/mechanism explained mass (and inertia). I was quite impressed by this fundamental mystery being solved and mentioned it to a prof and he said did not: mass and inertia...

Hello all . If there is not higgs boson that mean all elementary particle travel velocity of light through space ?

These are things about the higgs boson that am confused with: 1: how does particle physics explain the weakness of gravity, since higgs is just another force carrier like any other, why is it so weak? 2: how do virtual bosons, popping in and out of existence, exchange between two particles...

How can we propose the existence of a massless graviton when the recent discovery of the higgs boson means that there is a Higgs field that endows everything with mass? Doesn't the higgs field disprove the graviton? In that case, we would now have no idea where gravity fundamentally comes from...

Hi everyone and happy New Year. The Standard Model shows very specific and measurable couplings of the Higgs boson with the W and Z fields. What QUANTITATIVE measurements have been done to verify that these couplings are as predicted? Thanks and looking forward to your replies. A lot of...

Hey, I have the following equation for the renormalised mass of some scalar particle (i.e. Higgs boson) m_{r}^{2}=m_{0}^{2}+\frac{\lambda}{32\pi^{2}}( \Lambda ^{2}-m_{0}^{2}ln(1+\frac{\Lambda^{2}}{\mu^{2}})) Where I have the first order correction to the mass of the loop in a two point...

I have read several places that for a simple Higgs triplet model we can have either Y=0, +/- 2 This part I understand, because we have the relation Q=T3+Y/2 and any other Y values would therefore not allow for an electrically neutral Higgs. But what I don't understand is the claim that Y=+/- 2...

After the Cern discovery supporting the Higgs field Which is something I have little familiarity with. Due mainly to fourm opinions not necessarily this one that had discounted anything Higgs related. I started wondering if we do need a graviton to be the force carrier of gravity in the...

From here: http://blogs.scientificamerican.com/observations/2012/12/14/have-scientists-found-two-different-higgs-bosons/ So how significant would this be if it turns out to be true? I wasn't aware that there had been predictions of more than one Higgs in the first place, but the article says...

I wonder if there's a connection and it's a requirement or it's a completely different matter and space(time) warps anyway.

How is it possible that the Higgs boson interacts with itself? Now that it is almost certainly discovered, how can a particle that gives mass to other particles, give mass to itself? Does it make a 'loop' with other Higgs bosons? How can the Higgs boson interact with other particles in such...