Chapter 14, Problem 11P

A proton and an antiproton collide head-on, with each having a kinetic energy of 7.00 TeV (such as in the LHC at CERN). How much collision energy is available, taking into account the annihilation of the two masses? (Note that this is not significantly greater than the extremely relativistic kineticenergy.)

The average particle energy needed to observe unification of forces is estimated to be 1019 GeV . (a) What is the rest mass in kilograms of a particle that has a rest mass of 1019 GeV/c2 ? (b) How many times the mass of a hydrogen atom is this?

The primary decay mode for the negative pion is π− → μ− + ν-μ .                  (a) What is the energy release in MeV in this decay? (b) Using conservation of momentum, how much energy does each of the decay products receive, given the π− is at rest when it decays? You may assume the muon antineutrino is massless and has momentum p = E / c , justlike a photon.

One of the decay modes of the omega minus is Ω− → Λ0 + K−..(a) What is the change in strangeness?(b) Verify that baryon number and charge are conserved,while lepton numbers are unaffected.(c) Write the equation in terms of the constituent quarks,indicating that the weak force is responsible.

A neutral pion moving with velocity v decays into to photons; one photon of energy E1 travelling in the original direction of the parent pion and the other photon of energy E2 in the exactly opposite direction. If E1=2E2 , find v.

A K⁻ meson has a rest lifetime of 1.24 x 10⁻⁸ s. If one of these particles is created in a particle collider at speeds of 0.9992c, how long will researchers see it exist from their frame of reference?

What spin does a gluon have and what is the charge of a down quark?

Why is it easier to see the properties of the c, b, and t quarks in mesons having composition W − or tt - rather than in baryons having a mixture of quarks, such as udb?

The average particle energy needed to observe unification of forces is estimated to be 1019 GeV . (a) What is the rest mass in kilograms of a particle that has a rest massof 1019 GeV/c2 ? (b) How many times the mass of a hydrogen atom is this?