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PH3520 / Particle Physics Autumn term 2010 – week 4

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1 PH3520 / Particle Physics Autumn term 2010 – week 4
Glen Cowan Stewart Boogert Glen Cowan RHUL Physics

2 The Stanford Linear Accelerator Center (SLAC)
Glen Cowan RHUL Physics

3 The PEP-II e+e- collider
~1/2 mile diameter tunnel at end of linear accelerator houses separate beam lines for counter-rotating e+ and e- beams. Glen Cowan RHUL Physics

4 Glen Cowan RHUL Physics

5 The BaBar detector Glen Cowan RHUL Physics

6 Particle lifetimes The proper lifetime of a particle follows an exponential probability distribution: So if we measure the proper decay time for a number of decays and enter it in a histogram, it will follow an exponential curve convoluted with a function related to the measurement accuracy of the detector: Glen Cowan RHUL Physics

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