How much energy is needed for Pair Production? #physics

We calculated the minimum energy that is required to produce the proton-antiproton pair, by making the assumption that the proton and the antiproton do not have kinetic energy after the pair production.

#physics #science #alevel #alevelphysics #shorts #scienceshorts #particlephysics

[davidsetyo]

The proton and antiproton must be at rest after production

[vt.physics]

Did you figure out what assumption we've made? (Check out the description for the answer 😊)

[ThatJay]

you have used E = mc^2 instead of the full equation E^2 = (mc^2)^2 + (pc)^2. photons are massless, so i have no idea what momentum the particles must have (since it's zero mass to mass existing). the energy of the particles would depend on their momentum too. the photon does have energy, but it's energy is purely due to its frequency.

[Asaad-Hamad]

The energy of the gamma photon should be at least equal to the rest mass of the produced particles.. Any extra energy will be added to their kinetic energy, also the momentum of the photon is equal to the produced particles total momenta, so upon the high energy gamma photon interact with the nucleus, it will undergo the creation process and that's how matter of stable particles pop into existence and other unstable particles will decay immediately.
But the big question is why there are more matter than anti matter since every creation process produces equal particle from each one. 😅

[nosarcasm]

No inertia after creating, because E=mp+ma

[eowade]

Even more understandable than the Xenoblade 3 scenario

[たごやぎ]

This is called "creation" which is opposite of "annihilation". If you want to know frequency of the photon, you would need E=hf and I guess this all is under elastic collision🤷‍♂

[Asaad-Hamad]

Same goes for more common phenomena electron and positron pair production from less energetic gamma photon than this one which produced protons pair.

[schahrahman]

My mom needs to know l watch this on YouTube.

[Roshanv]

I think you have used the equation wrong. The masses times the speed of light squared, the two quantities somehow feel unrelated

[aggness]

What about radicals? Those don't follow the pair rule.

[dtmdota]

Since i am interested on how universe works, but i am stupid enough not to understand physics. I am going to sit here waiting for assumption explanation.

[TaiguRyu]

A proton plus an anti proton seem kinda heavy to be made from a photon. I'm guessing you assumed 100% efficiency?

[DrEggCake]

If the number of particles is same as their anti particles, why are we only taught about protons and electrons in school and not their anti particles

[radio]

Nah, this is too hard for me to understand

[Quicktwosteps]

The info is there but you can't apply it. I don't like know-how information. I like apply-this-now information.

[mysticalpie]

So what exactly is an antiproton and a anti particle? 🤔

[FantasyYeet]

I can not take E= MC² because of Cunk. Lol

E equals Mac Two

[LittleLemnJuice]

The assumption here is :- im too dumb to understand this

[xm]

Can I pay you to tell me and only me science/physics stuff