Questions tagged [particle-physics]
Particle physics is the study of the fundamental forces of nature as they are embodied in the interactions of elementary and composite particles at high energies and short time and distance scales. DO NOT USE THIS TAG for point particles in classical mechanics.
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Gravitational halos made of neutrinos
I have been recently interested in how halos made of standard model particles could be formed and behave.
After asking some questions in this site, I was told about how neutrinos could form such halos....
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How to calculate the pressure due to gas particles in a contained space from the mass, velocity of particles assumed to be like ideal gas. the [closed]
When I search for the fundamental formula I realize that things are done working backwards from the pressure and dividing by number of particles. When particles rebound from the boundaries of say ...
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Action of charge conjugation on bispinors
I'm following an introductory course to particle physics. We have introduced Klein-Gordon's equation for spinless particles and Dirac's equation for spin $1/2$ particles. Klein-Gordon's equation works ...
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Do we have any idea about the potential properties of "atoms" made of strange quarks? [closed]
Baryons made from something other than up and down quarks are extremely unstable, existing for less than a second. An advanced E.T civilisation has managed to make them stable (Handwavium:enabled).
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A level physics particle and radiation question [closed]
i am currently self-teaching a level physics through youtube vids, cgp book, and the hodder education book and I am currently struggling with these two questions
For question 23 the model solutions ...
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How can I visualise a sphere with a negative radius? [closed]
I want to visualise the shape of the sphere , will having a negative radius turn the inside of the sphere outside or something other will happen ?
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What is charge on a fundamental level and what is it caused by?
On bigger bodies, I've learnt so far that charge is caused by a lack or excess of electrons or protons but when you look at an electron or proton, how are they charged? what is the cause of their ...
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What is fragmentation scale in particle physics?
This is a quick guestion. What is used as the fragmentation scale in cross section calculations? If I have a quark which hadronizes, is the fragmentation scale (at which the fragmentation function is ...
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Implementation of fragmentation functions into a cross section calculation
I'm trying to understand how fragmentation is put into a cross section calculation. I have learned that the full cross section can look something like
\begin{equation}
\sigma=\int_0^1d\xi\int_0^1dzf(\...
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Absolutism of speed [closed]
If we know that any photon emission travels with light of speed in vacuum, what theoretically stops us to create big enough detecting machine, where photons (lasers probably) are emitted in different ...
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Jet events and Deeep Inelastic Scattering (Scaling Behavior) at the same time?
I am a philosopher of physics, so I already apologize for potential ignorance. I have also graduated in physics, but I now analyze problems on another level and also forgot some of the mathematical ...
