Exploring Parity & Charge Conjugation in Z Boson Decay

In summary, the conversation is discussing the process of a Z boson decaying into a fermion-antifermion pair and how to determine if it respects parity and charge conjugation. The advice given is to check the transformation properties of the initial and final states. The person asking for clarification mentions computing the polarized amplitude and a term proportional to cosine, and asks how to show it is not C invariant. The question is then posed about what changes when exchanging particles for their antiparticles in a fermion/antifermion pair and for the Z. Ultimately, the person asking for clarification is inquiring about the cosine of the angle between the Z's 3-momentum and the fermion's momentum in the Z's
  • #1
andrex904
15
1
Considering a Z boson decay into a fermion-antifermion pair. How can i say if the process respect parity and charge conjugation?Thanks
 
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  • #2
As usual, check the transformation properties of the initial and the final states.
 
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  • #3
Orodruin said:
As usual, check the transformation properties of the initial and the final states.
Could yuo be more specific? Because i compute the polarized amplitude and there is a term proportional to cosine (that is clearly not parity invariant), but i don't know how to show that it's not C invariant.
 
  • #4
What changes if you exchange every particle for its antiparticle in a fermion/antifermion pair, what changes for the Z?

Cosine of what, by the way?
 
  • #5
mfb said:
What changes if you exchange every particle for its antiparticle in a fermion/antifermion pair, what changes for the Z?

Cosine of what, by the way?

Cosine of the angle betwen z axis and the 3momentum of fermion in the rest frame of Z.
 

1. What is the Z boson and why is it important in particle physics?

The Z boson is a subatomic particle that mediates the weak nuclear force, one of the four fundamental forces in nature. It is important in particle physics because it helps explain the mechanism behind the weak nuclear force and provides evidence for the Standard Model of particle physics.

2. What is parity and charge conjugation in particle physics?

Parity is a physical property that describes the symmetry of a system under spatial inversion, meaning that if the coordinates of all particles are reversed, the system remains unchanged. Charge conjugation is a property that describes the symmetry of a system under the reversal of all particle charges. Both parity and charge conjugation play important roles in understanding the behavior of subatomic particles.

3. How are parity and charge conjugation related to the Z boson decay?

The decay of the Z boson is a process that involves the exchange of weak force carriers, which are known as W bosons. The interaction between the Z boson and the W bosons is affected by the parity and charge of the particles involved. Studying the decay of the Z boson allows scientists to investigate the behavior of particles under parity and charge conjugation transformations.

4. What is the significance of exploring parity and charge conjugation in Z boson decay?

Exploring parity and charge conjugation in Z boson decay allows scientists to test the predictions of the Standard Model and search for any deviations from it. It also provides insight into the fundamental properties of subatomic particles and can contribute to the development of new theories and models in particle physics.

5. What methods are used to study parity and charge conjugation in Z boson decay?

Scientists use large particle accelerators, such as the Large Hadron Collider (LHC), to produce Z bosons and study their decay products. They also use sophisticated detectors to measure the properties of the particles involved in the decay. The data collected from these experiments is then analyzed using statistical and computational techniques to study the effects of parity and charge conjugation on the decay process.

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