Why is the Z vector Boson heavier then most quarks?

In summary, the conversation discusses the use of the Friedman Equation to determine the expected time for a particle's Rest Mass energy and the relationship between the order of a particle's Rest Mass energy and its appearance in the Universe. The topic also touches on the puzzling discrepancy between the Rest Mass energies of certain particles and how they relate to the Fermi constant. The conversation concludes by suggesting further research in the area of cosmology.
  • #1
Chaos' lil bro Order
683
2
Hey,


If we use the Friedman Equation form to find time(excpected) for a given particle's Rest Mass energy as our input value, does it mean that the most energetic particles were 'born' first and the lighter particles 'born' later on in time in a linear, sequential order?

eg. T quark (174Gev)---->Z Boson(~90GeV)----->W Boson(~80GeV)---->B Quark(5GeV)------>Tau(~1777MeV)-----Proton(~938MeV)----->Electron(0.511MeV)------>etc...

Does the order of their Rest Mass energies mean they were 'born' in that order too?

Thanks, I'm very puzzled about this.
 
Last edited:
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  • #2
Nobody knows, You get Z and W from Fermi constant plus the electroweak couplings. The puzzling thing to me is why is the Z, W, and Top quark so much heavier than the other quarks. Besides, there Top quark relates also naturally to Fermi constant in the sense that the Yukawa coupling giving mass to this quark is exactly unity, a misterously casual thing.
 
  • #3
hold on rivero

Does a particle's rest mass dictate when it appeared in the Universe?

ie. electron and positron production occurred at times before the average photon's kT>1MeV

So does that mean that earlier on in time photons with kT>348GeV (174GeV x 2) were creating Top Quark/ anti-Top Quark pairs? Can we generalize that all particles are created from photons at various stages in the Universe's Energy densities?

I found your last answer useful, but it wasn't completely satisfying.
 
  • #4
Chaos' lil bro Order said:
Does a particle's rest mass dictate when it appeared in the Universe?

There is a biannual review about cosmology, you can check it and references therein. I am not very conversant in this area. Enjoy.
http://arxiv.org/abs/astro-ph/0601514
 

Related to Why is the Z vector Boson heavier then most quarks?

1. Why is the Z vector Boson heavier than most quarks?

The Z vector Boson is heavier than most quarks because it is a force carrier particle that interacts with all matter particles, including quarks. This interaction requires a certain amount of energy, which contributes to the mass of the Z Boson.

2. How does the mass of Z vector Boson compare to that of other force carrier particles?

The Z vector Boson is heavier than the photon, which is responsible for electromagnetic interactions, but lighter than the W vector Boson, which is responsible for weak nuclear interactions.

3. What is the role of the Higgs field in the mass of the Z vector Boson?

The Higgs field is responsible for the generation of mass in particles. The Z vector Boson interacts with the Higgs field, which gives it a non-zero mass.

4. Can the mass of the Z vector Boson change?

Yes, the mass of the Z vector Boson can change depending on the energy of the interaction. This is known as the "running mass" and is a concept in quantum field theory.

5. Why is the Z vector Boson important in particle physics?

The Z vector Boson is important in particle physics because it helps explain the weak nuclear force, one of the four fundamental forces in nature. Its properties and interactions also provide valuable insights into the Standard Model of particle physics and the origin of mass in particles.

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