Recent content by estrella

[b]1. Homework Statement [/b where i can find articles and paper on the subject of dark matter and the most recent experimental resolts on this subject? Any suggestions on bibliography? Homework Equations The Attempt at a Solution

i did my research on the subject and you are wright reilly. thanks!

yes. I want to explain why a nucleus of 1 proton and 3 neutrons does not exist by using the isospin. so i thought i should calculate the isospin of the combination n+n, then the combination p+n and then combine the results to find the isospin of the nucleus. i assume that i sould find an...

I am studing physics and at 6 months i will finish my school. The problem is that during the last 2 years I discovered that physics in not the thing I would like to do in the rest of my life. However, I desided to finish the school and for the last 1 year i study 10 h a day. The problem is that...

Homework Statement Homework Equations why there is no isotope of hydrogen with an atomic weight of four? The Attempt at a Solution i find that such an isotope would have an isotopic spin state of 1/2 |2-1> + 3/2 |1 -1> is there a reason for this state to not exist?

Homework Statement Meson B+ decays at J/ψ and K+. we know the masses of the particles and we are looking for the angle between the products when B+ has a momentum of 5GeV in lab frame. Homework Equations The Attempt at a Solution i found the momentum and energies at cm frame...