Higgs boson for dummies!

Hi,
finally here it comes, here it goes, post about Higgs boson is coming. Lets look what the “god’s particle” is how physicists found it and what it means.


 

God’s particle

Lets see how Higgs boson was named the god’s particle.

One of the best particle physicists Leon Lederman who found out that there are more types of neutrinos and so on and on. He wrote a book named the “God’s particle”. The book was partially named like this because the publisher did not want it to be named “Damned particle”.

He did this and now all physicists can agree on one thing, they hate this phrase because Higgs boson has nothing to do with God.

While all journalists can agree that “God’s particle” is amazing phrase.

So if you want some physicist to be angry on you, just mention the God particle and he will never forget.

Higgs boson was found 4.7.2012 in Large Hadron Collider.


Higgs field

What is actually more important than Higgs boson, the particle, is the field from which it came, this is the Higgs field. I already talked in last post about fields and how specific vibrations can form particles. Higgs field can do this too and it makes the higgs boson which decay almost immediately and is really hard to detect.

Higgs field is a very different from other fields because other fields can get to 0 energy while Higgs field can not. What is more accurate to say is that non zero value of Higgs field is less energetic than zero so Higgs field does not want to fall on the value of 0.


What does it do?

Well you may have heard about Higgs field giving mass to matter. This is partially true since when particle interacts with Higgs field they are kind of slowed so they do not travel at the speed of light. Some particles interact more than others like some people interact with group of people more than others because they are well known [1].

At one post I wrote about symmetries, check it out if you did not already. There is symmetry in particles. They are all the same.
What? Now this symmetry is broken, this means that there are differences between particles, thanks Higgs field! This is the most important effect of the field with the effect that while it would not change much the mass of protons and neutrons, it would change the mass of electron rapidly if it would not exist. Now the space occupied by particles as electrons is set and such a light particles need to have a lot of space around them. If you would turn off Higgs field completely, things would probably gone exploding a lot since the size of atom would increase as the space around electron needed would get bigger.

Dragallur

[1] This does not mean that all the mass is from Higgs field, most mass of neutron and proton is made up of energy m=E/c^2.

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The Standard Model for dummies!

Hi,
last time I talked about some stuff like dark matter (1 & 2), dark energy and I did not explain a lot of things which I mentioned and this time I will talk about Standard Model.


Standard model or Standard model of particles and interaction is the model of all observed and proved particles.

The next picture shows how it looks like, you could say that it is the “modern” periodic table or some kind of holy grail of physics.

So in this standard model you have particles that make up everything we know [1].

There are four main groups which are sorted by the forces they interact with.

All of those particles interact with gravity. Quarks also interact through strong nuclear force while leptons do not interact that way, also all of them have whole numbers for charge.

The red part has inside particles which are what is called “force carriers” they carry the fundamental forces with graviton excluded because he is not proven yet.

The most mysterious is the yellow part with only Higgs boson inside, I will make sure to make a whole chapter only about it.

Quarks

Already months and months ago I made post about quarks. Here I will cut it short so, quarks are particles that made everything there is except just a little part which is made from electrons. Quarks normally group together into hadrons – protons, neutrons, pions. Quarks have charge of either +2/3 or -1/3. They also have a property called color which is not color at all and they must group together so their colors cancel into white (white) [2].

Leptons

There are three main particles called: electrons, muons and tauons. Only electrons are actually somewhere while we can create other in the particle accelerator.

All of those have -1 charge but there are other particles called neutrinos. Electrons, muons and tauons all have their neutrino.

I already wrote about neutrinos but they are actually extremely light particles sometimes called “ghost” particles because they can easily go through whole planet Earth without touching anything. They are also electrically neutral.

Force carriers

Gluons are particles that are mass less and they carry the strong nuclear force.
Photons are also mass less and they carry electromagnetism.
Gauge bosons (W+- and Z) carry weak nuclear force.

Most of those particles have mass and that is because of Higgs boson, but that is whole new story which I will have to start with symmetries and fields, stay tuned.

Also main difference between force carriers and everything else is that they do not need any space to exist, there can be millions of them at one spot while only one lepton or quark.

Dragallur


 

[1] I do not talk about dark matter which I mentioned in earlier posts. WIMPs are not here since they do not belong into standard model, those are particles beyond the model even if they exist.

[2] Quarks have 3 basic colors: Red, Green and Blue but there are of course anti quarks which have just opposite colors: Antired, Antigreen and antiblue.