Particle Physics

Minimum kinetic energy of a particle

Make an order of magnitude estimate of the kinetic energy of an alpha particle (a cluster of 2 protons + 2 neutrons) in a nucleus. Do not use SI units.

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Converting mass from kilograms to electron-volts

In SI units the top quark has a mass of 3.08×10-25 kg, but nobody ever writes it that way. Find the corresponding value in GeV.

W Boson Decay

A W boson decays at rest to an up quark and a bottom quark. The W has a mass of 80.4 GeV and the mass of the up quark can be neglected. Find the values of the energies and momenta of the two quarks, working in natural units.

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