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Design a CP violation experiment with B-mesons in 1 hour

Which accelerator do you want to use e+e-, pp, p p , something else? Fixed target, collider? Mention pros and cons of each option At which energy or energies would you run your favorite accelerator? Why?

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Design a CP violation experiment with B-mesons in 1 hour

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  1. Which accelerator do you want to use e+e-, pp, pp, something else? Fixed target, collider? Mention pros and cons of each option At which energy or energies would you run your favorite accelerator? Why? You decide you want to measure CP asymmetry in BJ/y KS, which has a branching ratio of 10-4. How many B particles must be produced to reach 1o accuracy on b? In the CP asymmetry you measure both BJ/yKS and BJ/yKS How would you tag the flavour of the B at “production”? Why is “production” in quotes? Are there intrinsic limitations? What detectors do you need for tagging? To select BJ/yKS and Bp+p- backgrounds need to be rejected What are signatures/properties of signal and background that can be used to separate the two? Which can be used ‘online’ in a trigger? One of the two decays has a particular nasty background. Which one? How do you get rid of it, and what detectors do you need? Give the formula to reconstruct the “decay time” of a B meson in terms of directly “measurable” quantities. Why is “decay time” in quotes? Which detectors are required, and what is there relative importance? Make a sketch of your detector How does it compare to current and planned experiments? If ambitious, estimate the cost and write a proposal ;-) Design a CP violation experiment with B-mesons in 1 hour

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