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Chapter 33: Q27CQ (page 1211)

Discuss the similarities and differences between the photon and the Z0in terms of particle properties, including forces felt.

Short Answer

Expert verified

The similarities and differences between photons and Z0 are mentioned below.

Step by step solution

01

Concept

Photons are particles with zero rest mass and infinite range. They are the force carriers for electromagnetic forces. On the other handZ0 is a force carrier for weak nuclear forces.

02

Step 2:Explain the similarities and differences between the photon

  • Both the photon andZ0are fundamental particles that belong to the boson family.
  • Photons have no rest mass, whereasZ0has an 80 -fold higher mass than protons.
  • Photons carry electromagnetic force having relative strength of 1011 as compared to weak nuclear force, carried by Z0.
  • Photons have an infinite range whereas Z0 has a range of less than 10-18.
  • Photons as well as Z0 have both positive and negative spin.
  • Both are antiparticles of own right.
  • The forces they carry can be both attractive or repulsive.

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Most popular questions from this chapter

Because of energy loss due to synchrotron radiation in the LHC at CERN, only 5.00 MeV is added to the energy of each proton during each revolution around the main ring. How many revolutions are needed to produce 7.00 TeV (7000 GeV) protons, if they are injected with an initial energy of 8.00 GeV?

The mass of a theoretical particle that may be associated with the unification of the electroweak and strong forces is\[{\rm{1}}{{\rm{0}}^{{\rm{14}}}}{\rm{ GeV/}}{{\rm{c}}^{\rm{2}}}\]. (a) How many proton masses is this? (b) How many electron masses is this? (This indicates how extremely relativistic the accelerator would have to be in order to make the particle, and how large the relativistic quantity γ would have to be.)

(a) Is the decay \({\sum ^{\rm{ - }}} \to {\rm{n + }}{\pi ^{\rm{ - }}}\) possible considering the appropriate conservation laws? State why or why not.

(b) Write the decay in terms of the quark constituents of the particles.

(a) Three quarks form a baryon. How many combinations of the six known quarks are there if all combinations are possible?

(b) This number is less than the number of known baryons. Explain why.

(a) How much energy would be released if the proton did decay via the conjectured reaction \({\rm{p}} \to {\pi ^{\rm{0}}}{\rm{ + }}{{\rm{e}}^{\rm{ + }}}\)?

(b) Given that the \({\pi ^{\rm{0}}}\) decays to two \(\gamma {\rm{ s}}\) and that the \({{\rm{e}}^{\rm{ + }}}\) will find an electron to annihilate, what total energy is ultimately produced in proton decay?

(c) Why is this energy greater than the proton’s total mass (converted to energy)?
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