RHCPP 04-22 (Thesis)
2004

 
 

Royal Holloway Centre for Particle Physics

 

Search for the Lepton Flavour Violating Decay t > eg  using the BaBar Detector

Robert L Flack
Abstract: 
A search for the lepton flavour violating decay t > eg was carried out at SLAC using 124.4 fb-1 of data provided by the BaBar detector coupled with the PEP-II collided. The accelerator produces beams of electrons and positrons that collide to create the t+t- pairs, approximately 111 million, used for analysis. No evidence was found for the decay t > eg and a preliminary upper limit on the branching ration of 9.3x10-8 at 90% C.L. was obtained. This is two orders of magnitude lower than the previously published limit. The result presented here can be used to constrain certain models such as supersymmetry that predict branching ratios for the decay t > eg that are accessible with the size of the data set available here.

 

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thesis