Particle Physics (11 of 41) Subatomic Particle (Leptons, Quarks, Higgs, Gravitons) 2

In this video I will give a more detail discussion of subatomic particles of elementary particles (leptons, anti-leptons, quarks, anit-quarks, Higgs, gravitons) and composite particles (hadrons, baryons, mesons).

Next video in the Particle Physics series can be seen at:

[MichelvanBiezen]

Valentine,
Yes, that is strange indeed.
They have a different mass, a different life time, and a different decay sequence.
The secret is probably in the different decay sequence which is a result of their differences.
The only difference between the two particles is that they have different isospins.  Also, a neutral sigma can decay into a neutral lambda by ejecting a gamma particle which carries away the mass difference.
Most of what we know and understand on these particles is from how they react in the laboratory.
The "why" is often the most difficult question to answer.

[MichelvanBiezen]

yousef,
Good catch.  The omega particle made of 3 strange quarks has a -1 charge.

[Unidentifying]

Awesome!!
Perhaps you could do a video on exotic hadrons/baryons?

[wassollderscheiss]

I have two questions, which I'd like to kindly ask a reply for. 1. How does the higgs boson give things their mass? I seem to remember, that a few videos back in this series, you explained that the mass of objects stems from their energy. Like a proton gets its mass of IIRC 938 MeV from the quarks it is made of, speeding around at near light speed within the perimeter of the proton. 2. Why do we at all ask "What gives things their mass?", while I never heard a question what gave electrons their electrical charge or what gave quarks their color charge?

[zakirhussain-jsku]

Electron neutrino is the smallest elementary particle. Assuming there is yet a smaller particle say 'g' present in space, we can find the mass of such particle using wave speed formula as follows;
Vh : speed of wave in hydrogen gas 1320 m/sec.
Vg : Speed of wave in Space with g particles 3×10⁸ m/sec.
Mh : Mass of 1 mole hydrogen.
Mg : Mass of 1 mole of g particles.

V²g/ V²h= Mh/ Mg
Plugging in the values & considering 1 mole hydrogen has 2(6.022×10²³) hydrogen atoms & same number of g particles in 1 mole of such particles,
Mass of 'g' particle works out to 3.1649×10-³⁸ kg.
This mass is smaller than mass of electron neutrino. Could it be mass of a Graviton.
I don't know whether above gas analogy is applicable but result seems to be quite interesting. A particle smaller than smallest elementary particle. Neutrons are so abundant & yet difficult to detect, this particle may be even more difficult to detect.

[SushilKumar-mptg]

Wonderful i can understand the Shit I love it wonderful

[josephd.]

how is omega neutral if its made from 3 s quarks (which are all negative according to the video)?

[valentinehure]

Why are there 2 baryons made of the same 3 quarks (u, d and s) ie neutral lambda and neutral sigma ?

[zakirhussain-jsku]

Electron & positron represent smallest unit of charge. Since charge cannot exist without mass, the mass of electron should represent smallest unit of mass. Similar to coulomb force between two charges, force between mass of two electrons should represent smallest unit of gravitational force. This force comes to 5.54×10-⁴¹N. If mass of electron & positron represent a single charge then proton should be made up of 918 positrons & 917 electrons. Similarly there should be 919 positrons & 919 electron in a neutron. Release of electron in neutron decay & electron capture by proton suggest existence of such a possibility.

[Chroniclast-Tau]

If you are a programmer and replace the word particle with variable when he is explaining the Bosons, it makes it seem like code for a simulation or something.

[zakirhussain-jsku]

Why can't there be elementary particle smaller than neutrinos?

[Alphomega]

Is sigma neutral and lambda neutral is the same?

[sirishaa]

Wait a second.... Isnt omega supposed to be negative????

[EL-jxjj]

Thank you, now i understand! My physics teacher is useless....