Consider the fundamental process of pair production in which a particle and its antiparticle are created...

Consider the fundamental process of pair production in which a particle and its antiparticle are created when a photon of high enough kinetic energy passes through the Coulomb field of a heavy nucleus. What exact conservation laws, if any, does this process violate? 1. Charge conservation... particles with charge are created out of nothing. 2. Baryon number conservation... matter is created out of nothing. 3. Lepton number conservation... matter is created out of nothing. 4. Energy conservation... particles with energy are created out of nothing. 5. Mass conservation... particles with mass are created from nothing. 6. It does not violate any known conservation law. correct answer is not conservation of energy.

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Expert Solution

Fundamental process of pair production:

In pair production, Law of conservation of energy is not applicable.Because,here energy convert into mass

-Means energy having (photon)

-Means mass having(particle and antiparticle)

In this process,energy is collapsed(destroyed/impair) and equivalent amount of mass is generated(obtained).

Δm=E /c²

(Here,where Einstein’s mass energy equivalent)

So ,

A charge,baryon ,lepton and all other conservations of laws are applicable only in pair production.

genius_generous answered 1 year ago

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