Higgs Definition and 684 Threads

In 2009, Shaposhnikov and Wetterich successfully predicted the Higgs boson mass, by assuming that quantum gravity is asymptotically safe. Asymptotic safety remains a minority research program, but the paper itself is now well-known among people studying the metastability of the electroweak...

the higgs naturalness problems has several solutions 1- natural susy 2- technicolor 3- extra dimensions 4- conformal invariance Large Hadron Collider has to date strongly disfavored susy, technicolor, extra dimensions. it is highly unlikely susy is the answer to the higgs hierarchy problem...

since gravity under GR has unlimited range the graviton must be massless. since the graviton is massless, the higgs field does not couple to the graviton. If the higgs field did couple to gravitons, it would cause gravitons to have mass, contradicting observation. but the higgs field carries...

Does Peter Woits solution Higgs naturalness problem work? "http://www.math.columbia.edu/~woit/wordpress/?p=5667 Conventional wisdom in the particle theory for about 30 years has been that the Standard Model has a huge “hierarchy” or “naturalness” problem, the solution to which is supposed to...

The latest measurement of the Higgs boson mass from the ICHEP conference (based upon four lepton events measured by CMS) was 124.5 +0.48/-0.46 GeV. This is less than the current global average of about 125.09 +/- 0.24 GeV, which is statistically consistent with the global average but will...

Why is the weak field a force of nature.. while the higgs field is not a force of nature.. what is the signature or things to look for before a field can be considered as a force of nature?

In the multiverse paradigm, the Higgs particle is said to be unstable. What does the instability of the Higgs particle mean? Could it spontaneously disappear? What are the conditions for something like that to happen? And what would be the fate of the universe if that were to happen - keeping in...

Hi all.It is picture of simulation for higgs decays into four muons. Im wondering which track line is four muon. My guess is four thick yellow line at right-bottom side of the picture cuase it looks energetic. Am i right? Or any other opinion? Thanks alot Min

is the higgs field the same ever wair or does the field thicker and thinner in places like space-time?

Just when I thought I had finally wrapped my brain around relativity, Quantum theory took off. Then the Higgs Boson was discovered. How does the Higgs field under-pin relativity, namely space-time? How is the Higgs field distributed? Does it have curvature like space time, or is omnipresent...

Hi all, I'd like to know what is the most recent exclusion bounds on the mass of new charged Higgs scalar according to CMS and ATLAS collaborations searches at CERN ..

regarding this paper Evidence for a Protophobic Fifth Force from 8Be Nuclear Transitions Jonathan L. Feng, Bartosz Fornal, Iftah Galon, Susan Gardner, Jordan Smolinsky, Tim M. P. Tait, Philip Tanedo (Submitted on 25 Apr 2016) Recently a 6.8σ anomaly has been reported in the opening angle and...

Hello What possible processes are there for a production of Higgs from t-tbar? Thanks you in advance

What's the difference between the Higgs boson and the hypothetical graviton particle? Do they both have to do with the mass of matter? I guess what I'm trying to ask is how are the Higgs particle and the graviton related.

Does it make sense to say that the Higgs boson is an excitation in the Higgs field in much the same way that a fermion such as an electron is an excitation in the electromagnetic field? I am trying to understand the difference between the Higgs field, which is everywhere, and the Higgs boson...

I am really not sure. I watch Susskind lecture But I am still confused. He sad electron in motion emits photons. Quarks in motion emited gluons. Is that correct? Could quark be in motion? Also why all matter is made on fermions? And does Higgs gave mass to all particles? Why photon after all...

Hi all, I'm little confused about the maximal appropriate value for the SM Higgs quartic coupling and the Higgs mass = 125 GeV. that as ## \lambda =m_h^2 / 2 v^2 \simeq 0.1 ## for ##v = 246 ~ GeV##. But according to the perturbation theory, ##\lambda ## enters into higher order corrections as...

I've been reading Jim Baggott's book "Higgs -- The Invention and Discovery of the 'God Particle' "and have a rather elementary question, easily answered, I'm sure, by folk that contribute to this forum: is the Higgs only associated with the inner machinations of other 'elementary' particles, or...

I have been reading the Quantum Diaries here http://www.quantumdiaries.org/2011/03/25/an-idiosyncratic-introduction-to-the-higgs/ and in discussing the Higgs and the LHC experiment he says "The general problem is this: at the LHC, we’re smashing protons into one another. The protons are each...

The Higgs mechanism requires a quantum field (the Higgs Field) to permeate all space. This field has been added to the Standard Model. Is the Higgs field a "new form" of an old idea (the eather)?

What I mean by this is how were the laws of quantum mechanics used to predict that the higgs boson would decay into 2 photons or 4 electrons. I understand that the higgs boson transmits the higgs field, but why would a particle that transmits the higgs field have to decay in that wayand not some...

I have a question about the Many worlds interpretation. Does the observed mass of the Higgs boson suggest that the many worlds interpretation is incorrect, as the mass falls smack in the middle of the predicted values of both supersymmetry and multiverse interpretations of the standard model of...

What can a theoretical physicist discover something new about the higgs boson . This is for experimentalist but can a theoretical physicist discover anything new about the higgs boson ? And what peter higgs discovered other than detected it . He is a theoretical physicist did he wrote a new...

Homework Statement Consider the Higgs mechanism lagrangian, $$\mathcal L = (D_{\mu} \phi)^* (D^{\mu} \phi) -\mu^2 (\phi^* \phi) - \lambda (\phi^* \phi)^2 - \frac{1}{4}F_{\mu \nu}F^{\mu \nu},$$ with ##F_{\mu \nu} = \partial_{\mu} A_{\nu} - \partial_{\nu} A_{\mu}## and ##D_{\mu} = \partial_{\mu}...

Greetings, Other fields are curved around particles and objects. The Higgs field permeates all of space. What is the shape of the Higgs field lines? Is it parallel lines? Or a grid of perpendicular lines? Is it curved? What is the orientation? What determined the orientation? Thanks

Greetings, I have read seemingly contradictory things regarding the Higgs boson: that they permeate all of space and that it was created at extremely high energies in the LHC. I just heard a scientist say the Higgs field is full of HIggs bosons. So does the Higgs boson occur naturally or not...

I am trying to understand the Higgs field. I understand that mass and charge are measurable characteristics of particles. I have read that the concept of the Higgs field was to explain how particles have mass. The Higgs field supposedly "imparts" mass to particles which would not have mass if...

Please consider this statement from Alan Guth (from his book "The Inflationary Universe"). The context is the creation of magnetic monopoles: The monopoles, therefore, are the surviving remnants of the chaos in the Higgs fields immediately after the phase transition. Guth then goes on to...

I've doubt. I read on Wikipedia that, higgs field is thought to be present everywhere in universe. Is it even present by my side? If yes why am I not gaining mass. Please clear my doubts!

So this may be just me being stupid. Anyway, so i was reading about the higgs and i read it has been found in LHC to have a mass of 125 Gev, according to their expriments. Now here comes what i don't understand, how can the particle that gives mass have mass, and wouldn't that cause the higgs...

I'm having a hard time following the arguments of how the Higgs gives mass in the Standard Model. In particular, the textbook by Srednicki gives the Higgs potential as: $$V(\phi)=\frac{\lambda}{4}(\phi^\dagger \phi-\frac{1}{2}\nu^2)^2 $$ and states that because of this, $$\langle 0 | \phi(x)...

"The presence of this field, now believed to be confirmed, explains why some fundamental particles have mass when based on the symmetries controlling their interactions they should be massless." (wiki) It would seem, to myself, a novice, that the Higgs field and its corresponding particle, if...

Hi all, I try to find the exact calculated gluon- gluon fusion cross section for the SM- Higgs with mass 125 GeV, for instance at CME = 14 TeV. I found on twiki page: " https://twiki.cern.ch/twiki/bin/view/LHCPhysics/CERNYellowReportPageAt1314TeV#s_14_0_TeV " ##\sigma(gg \to h) = 49.47~ pb##...

Hi all, Has anyone an idea about the loop correction for quartic Higss coupling? In [arXiv:1507.03618v2 [hep-ph]], equ. (13) it's pointed out that the perturbativity constrains on the quartic couplings in the Higgs potential is ## \lambda^2 < 16 \pi^2 ## Which means that loop factor is ##...

could the higgs boson be the inflaton 126gev if not could the possible 750gev diphoton be the inflaton? what are the properties of the inflaton? could inflaton be scalar dark matter?

HI guys, a quick question. After the announcement of the discovery of the higgs-like resonance in July 2012 with ~5sigma significance by both ATLAS and CMS, what is the current p-value distribution with the full data set taken into account? And therefore, what is the total significance reached...

The part I understand: I understand that the spontaneous symmetry breaking of the Higgs produces the 'Mexican hat' potential, with two non-zero stable equilibria. I understand that as the Higgs is a complex field, there exists a phase component of the field. Under gauge transformations of...

Electrons have both mass and electromagnetic charge, so why is it that an electron's rest energy is equal to its mass energy with E=mc^2? Shouldn't it have some energy left over to excite the electromagnetic field? The mass energy excites the Higgs field, so why is there no energy for the EM field?

I recently read this article about how the Higgs Boson could decay into Dark Matter particles. Why is this not being taken seriously, there must be something, and I am not a physicist, just a ninth grade student, so why is this either a good theory or bad theory? Thanks in advance! Here is the...

I asked this question to PhysicsStackExchange too but to no avail so far. I'm trying to understand the way that the Higgs Mechanism is applied in the context of a U(1) symmetry breaking scenario, meaning that I have a Higgs complex field \phi=e^{i\xi}\frac{\left(\rho+v\right)}{\sqrt{2}} and...

if not, what is it?

there is a very similar-old thread about this https://www.physicsforums.com/threads/changing-the-chirality-of-fermions-in-interactions-with-higgs.686900/ in the yukawa interaction of the higgs vev (h0), the eL absorbs the higgs boson and becomes a eR which doesn't make sense to me since it...

In a recent thread, https://www.physicsforums.com/threads/is-energy-convertible-to-matter.692986/#post-5262460 PF mentor Dalespam said, "Energy is a property, not a "thing" Then Dalespam said, "You can convert things with energy (e.g. a pair of photons) into other things with energy (e.g...

If interactions with the Higgs field make something have more mass, and if movement creates interactions with the field, then wouldn't something at absolute zero have no weight (zero speed, so no interaction with the Higgs field)?

why do scalar interactions(for example the higgs vev or its components) reverse the chirality of the interacting particle?? i think this is the key for understanding the mass generation of fermions, but i can't think of a logical reason of the reversed chirality.

Forums relating to this have been up constantly, but just to clarify, they are not one and the same, to the best of my knowledge. Higgs causes mass, Graviton causes gravity. Higgs has an influence on the graviton, if you think about it. The Higgs boson causes mass which in turn is affected by a...

As you may know, the mass of the Higgs Boson is 125 GeV. My question is, "How can the particles themselves that create mass by interacting with others have mass?"

Its been suggested that the metastibility of the Higgs may lead to a new cyclic cosmology to replace inflation. http://arxiv.org/abs/1307.8106 Can anyone give a layman's guide to how this works and they propose to solve the problems of the big bang that inflation is supposed to solve: flatness...

I have been going through chapter 2 of Sakurai; the 1967 edition. Chapter 2 gets into the self energy of the electron, the concept of the bare mass of the electron, and vacuum fluctuations. Would these same concepts (self energy, bare mass, and vacuum fluctuations) apply to a scalar field (e g...

This is more of a QFT question, so the moderator may want to move it to another forum. The simplest example of a QFT that I learned was the scalar field; in Sakurai's 1967 textbook. I know the Higgs is a J=0 particle. Is it described by the simple scalar field discussed in Sakurai's text? I ask...