Recent content by Moth

I am doing some research on atomic clocks. From what I have read, I understand that in Rb atomic clocks you: -optically pump a cell of Rb, so that the electrons are all in a single hyperfine state -subject the cell to microwaves of appropriate frequency, so that the electrons will be...

This is for my final year undergraduate project. My supervisor has supplied CalcHEP on a computer and told me to do a project on the Standard Model. My friend has chosen to study ways of finding the Higgs with CalcHEP, and I have chosen to study the broad subject of mass. My intentions were to...

I am doing a final year MPhys project using some software called CalcHEP. It uses Monte Carlo integration to solve the necessary calculations for finding the cross section for particular particle collisions at particular momenta. However my supervisor and I are not sure whether the program has...

I am currently studying particle collisions. Before I begin I need latest mass values of the leptons, bosons and quarks. However I have been told that I will need to slightly modify these due to vertex corrections. (Due to the incoming particles interacting before colliding, see attachment for...

Sorry, I didn't mean "quark mass theory", but simply a theory that infers the quark mass. And which experiments have been done traditionally to test these theories. So that I might research them in more detail.

I understand how it is possible to measure mass by deflection in a magnetic field or from resonances due to collisions. But estimating the mass of quarks by theory must be quite challenging. Also the Higgs boson, which not been seen, has been given an estimated mass of 120GeV, I assume is due to...

Masses of quarks, leptons and bosons are often given as a range of values. How are the masses measured experimentally, why are they so inaccurate and how are they being made more accurate?

Hey Exelus, I'm in your class and the answer 40.4 years is correct as far I have been able to work out and I confirmed it with someone else from our class. I hear that Physics for Poets is very useful for the astonaut question. Basically the time of the other astronaut seems slower to the...

I have been informed that if: There is two train cars connected by a chain that will snap if extended by more than 1%. The cars accelerate at exactly the same rate, so the distance between them remains constant. As they speed up to very high velocity and special theory of relativity start...