Recent questions in Particle Physics

+21 votes

0 answers

Is electric charge without mass possible? If not why?

asked Mar 13, 2023 in Particle Physics by NovaCharm

+6 votes

0 answers

What are particles and antiparticles? If there is a particle for every antiparticle, where are they hiding from us?

asked Mar 12, 2023 in Particle Physics by LunarTwilight

+191 votes

0 answers

What is the difference between matter and antimatter? How would one go about proving or disproving the hypothesis that our universe is made of antimatter instead of matter?

asked Mar 12, 2023 in Particle Physics by EmberWhisper

+323 votes

0 answers

If antimatter exists, why haven't humans used it yet?

asked Mar 12, 2023 in Particle Physics by twr88

+196 votes

0 answers

When an electron and positron are produced from pair production, are they entangled particles?

asked Mar 12, 2023 in Particle Physics by NebulaScribe

+10 votes

0 answers

In string theory, does an electron consist of just one string, or a bunch or very little strings?

asked Mar 12, 2023 in Particle Physics by MysticEnigma

+87 votes

0 answers

Why is the graviton considered a real possibility when we know (by general relativity) that gravity isn't actually a force?

asked Mar 12, 2023 in Particle Physics by robj26

+23 votes

0 answers

Why are electrons (-) outside of the nucleus instead of being inside the nucleus together with protons (+) (because unlike charges attract while like charges repel)?

asked Mar 12, 2023 in Particle Physics by martmcg (1.9k points)

+9 votes

0 answers

Is it theoretically possible to remove mass from matter?

asked Mar 12, 2023 in Particle Physics by marko

+44 votes

0 answers

asked Mar 11, 2023 in Particle Physics by Jolene

+25 votes

0 answers

Can we measure both position and momentum simultaneously for one single particle in quantum mechanics?

asked Mar 11, 2023 in Particle Physics by nathan (2.9k points)

+26 votes

0 answers

How large of a volume would all of the known matter in the Universe occupy if stripped of all the the empty space between atoms making up molecules, subatomic particles making up atoms, and quarks making up subatomic particles?

asked Mar 11, 2023 in Particle Physics by Mike S

+5 votes

0 answers

What is the definition of the particle responsible for the movement through time in our universe? Will it ever stop moving forward until all universes have been created/destroyed?

asked Mar 10, 2023 in Particle Physics by winn

+182 votes

0 answers

In an LHC, is it possible that one of the particles is moving to the left and the other particle hits or collides with that particle from the back, like, for example, a car that is moving but the other car hits it from behind?

asked Mar 10, 2023 in Particle Physics by DotNetter

+25 votes

0 answers

If cosmic ray interactions in space exceed anything we can do on Earth, why don't we use orbital instruments to observe particle physics instead of building ever larger and more expensive atom smashers on the ground?

asked Mar 10, 2023 in Particle Physics by Chris Rixson

+13 votes

0 answers

How much space do subatomic particles occupy?

asked Mar 10, 2023 in Particle Physics by Tabby123 (3.6k points)

+137 votes

0 answers

If two elementary particles are entangled and one travels near the speed of light thus that it experiences time dilation, in the event of a wave function collapse do they communicate their properties at different points in time?

asked Mar 10, 2023 in Particle Physics by LunarSculptor

+11 votes

0 answers

How does a particle gain mass through the Higgs Field? I understand that Symmetry Breaking and having a 0 v.e.v causes this but what state does that particle have to be in to gain mass (should it be moving at a certain speed or is it something else)?

asked Mar 10, 2023 in Particle Physics by Granfernewtown20

+11 votes

0 answers

How did they know that alpha particle scattering was caused by electrostatic forces and not kinetic collisions?

asked Mar 10, 2023 in Particle Physics by VZ91

+3 votes

0 answers

What is the difference between matter and anti-matter? Why didn’t all matter get annihilated by anti-matter a long time ago?

asked Mar 10, 2023 in Particle Physics by Darren5473

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